IRC log of #maemo for Saturday, 2012-08-04

kerioShadowJK_: do you have your bq24200.sh script somewhere?00:00
kerioi mean, hosted00:00
ShadowJK_http://enivax.net/jk/n900/ ?00:00
keriowell i didn't know about that :)00:01
kerioty00:01
keriois it in a factoid?00:02
ShadowJK_no00:03
ShadowJK_nafaik00:03
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kerioshould it be? are you against it?00:03
ShadowJK_I just never considered any of that stuff fit for general use by the general public00:04
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keriok00:05
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ShadowJK_The advantage of people having to ask me where it is, is that when they 5 minutes later are full of questions I'm hopefully still around to answer :P00:08
keriohehe00:08
kerionah, just trying to calibrate the chip for my battery00:09
kerioi'm trying to discharge it as fast as i can, gps enabled, screen at max brightness and 3g with crappy reception00:09
kerioso i can go to sleep kinda early00:09
kerio:D00:09
SpeedEvilflashlight00:11
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r00t^homeshort-circuit00:14
* kerio has no idea how to remove the body part of an otterbox00:16
ShadowJK_also, in an x-terminal: while true; do A=0; done00:17
ShadowJK_for extra cpu use00:17
DocScrutinizer05kerio: huh? fastest way to drain the battery? you're kidding me?00:19
keriowell, to use it00:19
kerio:)00:20
kerioi really hope i can charge it afterwards :/00:20
DocScrutinizer05ooh you're serious00:20
ShadowJK_I've had some issues charging from near empty with "weak" powersources00:20
kerioi'm using the wallcharger00:21
ShadowJK_lol, I've been doing "discharge quickly" all week for benchmarks00:21
kerioDocScrutinizer05: i'm calibrating!00:21
DocScrutinizer05kerio: increase power comsumption to max ;-P00:21
DocScrutinizer05backlight to max00:21
keriothat's what i'm doing00:21
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keriobut i'm kinda sleepy!00:21
DocScrutinizer05speakers at max volume00:21
DocScrutinizer05vibrator to 100%00:22
kerionaughty00:22
DocScrutinizer05aaaaand of course send lots and lots of data out via 3G00:22
kerioout?00:22
DocScrutinizer05then play some video so the gfxaccel has something to do00:22
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ShadowJK_I keep a ping going, load google.com (triggers 3.5g). The ping keeps it in 3.5g00:22
DocScrutinizer05out as in "to the internets"00:23
DocScrutinizer05nah, that's possibly futile as it just receives data00:23
kerioit also sends data!00:23
kerioicmp echo requests!00:23
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DocScrutinizer05max TX consumption with DATA OUT plus concurrent phonecall (place phone to a speaker so it has some 'voice' to send out)00:24
DocScrutinizer05same with wifi (though those are max 100mW while WCDMA are 2ish Watts)00:25
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DocScrutinizer05and yeah, place your device also into a tin box, so it has to ramp up TX power all the way to reach BTS/eNodeB00:26
DocScrutinizer05as otherwise your 3G still might use less than WLAN00:27
DocScrutinizer05;-P only if you're extremely lucky00:27
keriotin box = my house and my hand00:27
DocScrutinizer05don't forget torch/flashlight00:27
DocScrutinizer05and camera00:27
keriook, i'm just going to irc00:27
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keriowith max backlight00:27
ShadowJK_Considering my ping time goes down below that of which my HSDPA-only phone gets in HSDPA mode, I think both HSDPA and HSUPA get activated on my N900, and in that mode powerconsumption doesn't change significantly with transfer rate IME00:28
DocScrutinizer05(the cam IF sucks quite a lot)00:28
DocScrutinizer05then enable boostmode and feed your 200mA max load to a convenient sink00:28
DocScrutinizer05hell, 200mA*5V are another whole Watt00:28
DocScrutinizer05ShadowJK_: I'm not expert enough to evaluate the WCDMA power consumption for different upstream data sitations00:29
DocScrutinizer05SpeedEvil did empiric tests though00:30
DocScrutinizer05seems you can get another 300mA load on battery with upload, on unknown OTA signal situations though00:31
ShadowJK_possibly00:31
DocScrutinizer050.3 * 4 sounds sane though for WCDMA TX00:31
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ShadowJK_But I can get up to 1A by shading it :P00:32
keriowifi adhoc?00:32
DocScrutinizer05might be up to 0.5 or even 1A in extreme cases00:32
kerioer00:32
ShadowJK_at 9km distance from tower00:32
keriowhat's the opposite of adhoc?00:32
DocScrutinizer05sometime anywhere00:32
DocScrutinizer05or did you mean infrastructure mode00:34
kerioi did00:35
keriothat has no powersaving00:35
DocScrutinizer05infra mode has powersaving00:35
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DocScrutinizer05ad hoc doesn't00:35
keriowhat's the one without an AP?00:36
DocScrutinizer05adhoc00:36
keriothat one00:36
kerioby the way, is there a way to do hostap on the n900?00:36
DocScrutinizer05allegedly not, the chip forbids00:36
DocScrutinizer05that's why hotspot and joghurt use adhoc fake AP mode00:37
* kerio shakes his fist at the chip00:37
keriojoghurt?00:37
ShadowJK_joikuspot00:38
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DocScrutinizer05joghurt sport00:39
DocScrutinizer05http://www.giffits.de/ritter-sport-mini-joghurt-werbeartikel-74502.htm00:40
ShadowJK_ritter is bad00:41
ShadowJK_my 14 year old german cousin agrees with me00:42
kerioomnomnom00:42
DocScrutinizer05so is joikuspot00:42
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DocScrutinizer05a botch invented to ship around the fact that sybian doesn't support any proper networking, and then the whole shite ported to linux which actually _has_ proper networking (though not in stock kernel) - and YET they need their own kernel module afaik00:44
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ShadowJK_Yeah they're using their own kernel module to do generic packet injection into the stack, I think00:45
DocScrutinizer05that's like inventing aqualung for mokeys transported in aquarium00:45
keriodafuq00:45
kerioclearly cssu needs to stop that madness! /s00:45
ShadowJK_Speaking of wtfness. I acquired an android tablet00:45
ShadowJK_The powersaving is silly. All the clock widgets, including the "system status bar" one, were frozen for 3 days and didn't update. lol00:46
ShadowJK_I was playing GTA3 and almost got late for work because the clock was frozen00:47
keriohaha00:47
keriosure, blame it on android00:47
DocScrutinizer05wtf of the week from my professional domain: a high-prio process spinning in a busy loop waiting for a low-prio process freeing up resources00:47
DocScrutinizer05and no, this system won't do fair scheduling or anything like that00:48
DocScrutinizer05ShadowJK_: watch same frozenness on N81000:49
ShadowJK_Never seen it on N81000:49
DocScrutinizer05the systray clock only updates when you touch the screen00:49
ShadowJK_Like, under heavy system load, when unlocking screen, it shows stale info, but once system load clears up it updates?00:49
DocScrutinizer05as do any widgets00:49
ShadowJK_Not for me?00:49
DocScrutinizer05nah, zarro system load00:50
DocScrutinizer05just idling with screen never fading00:50
ShadowJK_Never seen that00:50
ShadowJK_Except with foreca weather app that only updates when you establish network connection00:50
DocScrutinizer05sure, but then maybe you never had a chance to notice00:52
DocScrutinizer05will your screen stay on while on charger?00:52
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DocScrutinizer05as that's the only situations where you can watch it00:53
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ShadowJK_no screen is off during charge00:54
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DocScrutinizer05I'm just trying to reproduce it, seems plain homescreen on while charging isn't sufficient00:55
DocScrutinizer05no screen, or 'no, screen is..'00:56
DocScrutinizer05hmm, seems a more tricky screwed case where the display of time just stalls - I'm definitely sure I've seen this 100s of times now, but now I can't reproduce it01:00
FIQ|n900screen can be configured to turn off during charge or never turn off01:05
keriohm, apparently calibrating without bme is easy01:05
ShadowJK_sure, bme shuts down before calibration threshold is reached01:06
kerioShadowJK_: well, not exactly01:06
ShadowJK_I usually try to hit the calibration voltage at 300-400mA load, becauese that kinda represents typical load01:06
keriobme will shut down at 3198, calibration is 15 seconds below 324801:07
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ShadowJK_Well, sometimes it shuts down before, sometimes shutdown takes so long that power is consumed long enough to bring it below 3248 for long enough01:07
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keriohehe01:07
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keriomeh, i have to bring it down from the resetted 2042mAh to a nokia BL-5J01:08
kerioit'll probably take a couple of cycles01:08
ShadowJK_iirc the 3198 threshold is without hald-addon-bme? I.e. bme will judge that userspace has failed to execute safe shutdown, and will do its own forceful shutdown at 3198-ish?01:08
kerio\_o_/01:08
ShadowJK_do you want a shortcut?01:08
keriofukken bme01:08
keriowhich shortcut?01:08
ShadowJK_one cycle01:08
kerioi just stopped it01:08
kerioooh, neat01:09
keriobut no01:09
keriodon't care *that* much01:09
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keriobesides, i'm still using the standard battery indicator01:09
keriohow would i do that?01:09
ShadowJK_it's in the DANGEROUS folder anyways. write_ar and transfer ar to nac scripts. Edit AR to your best guess of battery capacity, execute. Charge fully, disconnect charger, immediately execute second script. Then do discharge to empty calibration cycle.01:10
ShadowJK_Must absolutely be done without bme, without battery kernel modules, etc etc01:10
ShadowJK_Though you can use bme to do "charge fully" if you want, but after that it must be stopped01:11
kerioShadowJK_: meh, i could consider it if i eventually move to a bigass battery01:11
ShadowJK_yeah01:11
keriomeh01:13
keriolast measured discharge is 1700mAh01:13
keriono way this crappy bl-5j is 1700mAh01:13
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kerioShadowJK_: :c01:14
kerioi'm sad01:14
ShadowJK_Single learning cycle does 1/6th step at most :)01:14
keriodoes this mean that it's actually worth it to reset the chip if you move to a big battery, because it resets at 2400mAh?01:15
ShadowJK_probably01:15
ShadowJK_or use my "shortcut"01:15
ShadowJK_I reset when changing batteries anyway, to reset cycle counters01:16
keriohow do you reset it?01:17
kerioremove battery, wait for bupbat to fail, put battery in?01:17
ShadowJK_bupbat isn't connected01:17
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ShadowJK_No I use i2cset to send reset command :P01:17
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kerioi see01:21
keriowtf, bme thinks my phone is charging01:22
kerioeven when it isn't01:22
kerio:s01:22
keriofukken BME01:22
kerioand fukken hald-addon-bme, i suppose01:22
keriooh god, it's in ACT_DEAD mode with no charger01:23
keriooh, phew, it turned off01:23
DocScrutinizer05ShadowJK_: http://maemo.cloud-7.de/share-service/20120804_001.jpg01:26
DocScrutinizer05sorry for the blurr01:27
ShadowJK_wow01:27
ShadowJK_but the widget updated? :)01:27
DocScrutinizer05yep01:27
ShadowJK_and the statusbar thing that i dont even have, didnt01:27
kerioShadowJK_: how do i kick bme in the head enough for it to start working again without rebooting?01:27
DocScrutinizer05the whole statusbar seems frozen01:28
DocScrutinizer05stop bme; start bme; stop bme; start bme;01:29
DocScrutinizer05actually hald-addon-bme re-establishes the IPC afaik01:29
ShadowJK_dunno, i dont really use bme01:30
DocScrutinizer05and bme itself will open the i2c device to talk to the chips01:30
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kerioDocScrutinizer05: i tried that01:31
kerioit still thought it was charging01:31
DocScrutinizer05what do you mean by "start working again"?01:31
kerioDocScrutinizer05: correctly report nothing plugged in as "not charging"01:31
DocScrutinizer05umm, plug and unplug something01:31
DocScrutinizer05start booston for a second, then ^C01:32
keriohm, i could've tried hostmode, i suppose01:32
keriothe problem was hald-addon-bme i think01:33
DocScrutinizer05sure01:33
DocScrutinizer05it takes a while til IPC gets re-established afaik01:33
DocScrutinizer05only tries once per minute or so01:33
DocScrutinizer05lshal might help01:34
DocScrutinizer05dunno01:34
DocScrutinizer05I frequently wonder who and why shuts down screen-BL when you start bme01:34
DocScrutinizer05rather idiotic01:35
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DocScrutinizer05freemangordonEstel_: please, hold on for a while22:1002:08
DocScrutinizer05Estel_no problem22:1102:08
DocScrutinizer05Estel_02:08
DocScrutinizer05and I think that it's worth to use full potential where applicable, instead of going lazy and minimalistic, just for sake of it.02:08
DocScrutinizer0522:1602:08
DocScrutinizer05and another one: Estel_merlin1991, let me rephrase it - kp exist, because omap1 is not enough for 99,99% of users02:12
DocScrutinizer05estel_ esists because otherwise 99.99% of aspirin would never get sold02:12
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DocScrutinizer05dafaq estel, if you're eager to use KP, so fucking just DO IT, don't pretend you hafe to fight for something in the name of 99.99% of other users who as well can just use KP if they feel like they need it!02:14
DocScrutinizer05s/hafe/have/02:15
infobotDocScrutinizer05 meant: dafaq estel, if you're eager to use KP, so fucking just DO IT, don't pretend you have to fight for something in the name of 99.99% of other users who as well can just use KP if they feel like they need it!02:15
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SpeedEvilThe above tests were with good signal, though maybe 3km from the antenna02:41
DocScrutinizer05SpeedEvil: makes sense with those 0.3A02:57
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DocScrutinizer05I guess that tower is made to cover a large diameter area02:58
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DocScrutinizer05i.e. it's high enough to have good line of sight to your position02:59
jon_yDocScrutinizer05: can uboot be made to explicitly turn on the lcd backlight on start?02:59
DocScrutinizer05umm yep02:59
DocScrutinizer05basicaly why not03:00
jon_ycool, so feature request? :)03:00
DocScrutinizer05I guess the _real_uBoot_ already has a command for that03:00
jon_yI find it hard to debug sometimes when the back light does not turn on after a too fast reboot03:00
jon_ynot sure why its off03:00
DocScrutinizer05however, since during uBoot probably charging isn't enabled at all, you may ponder twice if you want to increase battery load by backlight03:01
jon_yhmm, good point03:01
* DocScrutinizer05 finally off to mobile_mode for a beer03:02
jon_yI guess I can leave the phone off while charging03:02
jon_yand then attempt to boot it after battery is chareged a bit03:02
DocScrutinizer05there's no such thing like 'off' while charging03:03
DocScrutinizer05there's a thing called act_dead though03:03
jon_ythe mode when you power off the phone from the menu?03:03
DocScrutinizer05which basically is just another init runlevel03:03
DocScrutinizer05no, it enters act_dead as soon as you plug in the charger03:04
DocScrutinizer05when it been off03:04
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jon_yso if battery is dead and I insert a fresh battery, what happens there?03:04
DocScrutinizer05it boots up way beyond stage of uBoot03:04
jon_yah ok, normal boot up03:05
jon_yso act_dead is the closest thing to a switched off n900?03:05
DocScrutinizer05err, sorry. what do you mean by "insert new battery"? what shall happen?03:05
jon_yI was wondering if it really boots up into some init level to wait for the battery charger03:05
DocScrutinizer05yep, basically act_dead is closest thing to switched off N900 whenever you got any charging device attached to USB. Still act_dead is way more close to a fully booted and running device than to a off device03:06
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jon_yok, act_dead is handled by nolo?03:07
DocScrutinizer05no, it's not waiting for charger, the charger actually switches on the device03:07
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jon_yah ok, good to know03:07
DocScrutinizer05off without charger actually is off03:07
DocScrutinizer05with charger attached though the device is either on with display, or on without display aka act_dead03:08
jon_yif nolo is handling act_dead, might be fine for uboot to always on the backlight03:08
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DocScrutinizer05no, act_dead is a linux runlevel03:08
DocScrutinizer05sth like init 2 or sth03:08
jon_yoh03:09
DocScrutinizer05you could even have the device update via WLAN while "off" and charging03:09
DocScrutinizer05see /etc/mce/mce.ini03:09
jon_yhow does it enter act_dead before uboot loads the kernel?03:09
jon_ysounds magic03:09
DocScrutinizer05it doesn't03:10
DocScrutinizer05NOLO hands some bootreason up to kernel03:10
DocScrutinizer05kernel decides whether to enter act_dead or rather do "normal" bootup to init 303:10
jon_yhmm03:11
DocScrutinizer05the only situation where charger won't boot right into linux is flatbatrecover03:12
jon_yso, the kernel is actually loaded when the charger is plugged in, and that's before uboot03:13
DocScrutinizer05you can tell from steady amber (the slowly flashing amber LED is already made by software controlling the LP5523 chip)03:13
DocScrutinizer05no, that's abfter uBoot03:13
jon_yok, I tend to associate uboot with the kernel selector menu, am I wrong?03:13
DocScrutinizer05the sequence is ROMBL->xloader->NOLO->(uboot->)linuxkernel03:14
DocScrutinizer05and linuxkernel then starts charging03:14
jon_yah so the uboot payload kernel is in control then?03:14
DocScrutinizer05yes03:14
jon_ythat explains a lot03:15
jon_yexplicit backlight on when keyboad slider is out then? :)03:15
DocScrutinizer05sounds ane03:15
DocScrutinizer05sane*03:16
jon_ywhen does pali come in usually?03:16
DocScrutinizer05that doesn't show any regular schedule03:16
jon_yok, I'll forward the request about uboot when I see him03:17
jon_ybtw, do Android phones do the same with the act_dead stuff?03:18
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DocScrutinizer05quite possible03:18
DocScrutinizer05though I never touched any android phone yet03:18
DocScrutinizer05basically no device is charging in system-off state03:19
jon_yme neither, they're blasphemous :)03:19
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jon_yok, so dead battery means extremely bricked phone if there are no battery replacements?03:19
DocScrutinizer05particularly since user expects feedback about charging(-progress)03:19
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DocScrutinizer05not yet03:20
DocScrutinizer05~flatbatrecover03:20
infobotRemove battery for 1 minute. Insert battery. Plug powered Nokia wallcharger to device. Watch steady amber. Let sit and charge. Do NOT try to boot. After 30 min, you got either a) a booted up N900, b) flashing amber which means you can boot, c) steady amber going off - in this case start over again with ~flatbatrecover03:20
DocScrutinizer05[2012-08-04 02:12:32] <DocScrutinizer05> the only situation where charger won't boot right into linux is flatbatrecover03:20
jon_yhmm, how does flatbatrecover work?03:20
DocScrutinizer05the bq24150 battery manager chip will try to charge battery to a state where system is able to boot03:21
DocScrutinizer05you can tell that from steady amber LED03:21
jon_ysteady instead of varying?03:21
DocScrutinizer05this 'emergency charging' is restricted to a max bat voltage of 3.7V though03:22
DocScrutinizer05yep03:22
jon_yall of this is good info, thanks a bunch DocScrutinizer0503:22
DocScrutinizer05yw03:22
jon_ydoes it work with USB charging from a laptop/desktop?03:22
jon_yor does it require the Nokia wallcharger?03:22
DocScrutinizer05flatbat? nope03:22
DocScrutinizer05requires Nokia wallcharger with D+- short03:23
jon_yany modified USB with D+- short will do?03:23
DocScrutinizer05or rather, it won't charge at any reasonable rate without, iirc03:23
DocScrutinizer05yep03:23
jon_yI have one on my laptop03:23
jon_ythat "charging port" is working even with the laptop off03:24
DocScrutinizer05carefully splitting the cable mantle and shorting white with green wire will do03:24
jon_ynot that hard to do with easy to find micro usb cables03:24
jon_yonce again, thanks for the awesome infos03:25
DocScrutinizer05I even improvised a charger by shorting the 2 middle contacts of USB-F with a patch of alu foil03:25
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jon_yI'll need to look at the USB pinouts03:25
DocScrutinizer05D+ and D- are the midlle two of all 4 pin USB03:26
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DocScrutinizer05the outer contacts are +5V and GND03:26
DocScrutinizer05o/03:26
jon_yok, good to know03:26
jon_ynow I'm curious how it enters data mode when shorted03:27
DocScrutinizer51022705 <jon_y> now I'm curious how it enters data mode when shorted))  not at all? obviously03:37
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jon_yDocScrutinizer51: well, according to wikipedia, there is another called Downstream Charping Port03:44
jon_yI guess I have one of those on my laptop03:44
jon_ysince I worked with usbnet over it before03:45
jon_yaccording to the harmattan flasher, it is a hub'ed USB port, so flashing tends to fail03:46
jon_ymaemo flasher was fine though03:46
DocScrutinizer51those so called cahrging USB ports usually are just delivering 5V also wehn PC is suspended or even off03:46
jon_yother USB ports tend to cause the n900 to say "Not enough power for charging"03:47
jon_yok, that makes sense too03:47
jon_yI'm lacking any hackerspace to probe it03:47
DocScrutinizer51you could probe with arbitrary USB stuff that has a LED that's permanently on03:49
jon_ya USB mouse03:50
jon_yyes, its on03:50
jon_ylooks like you're right03:50
DocScrutinizer51the charging ports also *might* implement soe cruft to deliver up to 1 or 2A and some ay to signal that.03:51
DocScrutinizer51that's however not detected or even probed by N90003:51
jon_yhow much is the usual current draw?03:51
jon_y5v 900mA?03:51
DocScrutinizer510.5A max03:51
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jon_ylikewise for flatbatrecover?03:52
jon_yI noticed the Nokia wallcharger charges faster, or maybe it was my imagination03:53
DocScrutinizer51USB vbus supply: 100mA max without any special voodoo03:54
DocScrutinizer51500mA max after ENUM over data03:54
jon_yI was planning to build an external battery pack with simple wires03:55
DocScrutinizer51'unlimited' for fastchargers signalled by D+- short03:55
jon_yso, it needs some logic to start charging?03:55
jon_yah ok, short D+- and be done with it03:55
DocScrutinizer51yep03:55
jon_yprobably a good idea to to limit current to 1A, and a voltage regulator to 5v03:55
jon_ydon't want no burning battery pack :)03:56
ShadowJK_As for external battery pack, to charge N900, just short D+ and D-, and make sure your switchmode converter or whatever can provide enough current03:56
jon_yShadowJK_: 1A is fine?03:56
ShadowJK_yes03:56
jon_ynice, looks simple enough to step around a few 9V batteries03:56
ShadowJK_Amusing trivia, my always-on PC has 6 usb ports. Only 2 of them can reliably charge N900, those 2 are on a PCI bracket. The pci bracket is connected to motherboard straight, but it also includes 2 capacitors on the +5V/GND rails. :-)03:57
ShadowJK_9V is pointless, they don't store any energy worthwhile03:58
DocScrutinizer51you might get away with 3 alkaline cells in series03:58
jon_ywhat's with the caps? bounce control?03:58
ShadowJK_Stability?03:58
jon_yI was thinking 4x9v in parallel03:58
ShadowJK_That's just stupid03:59
ShadowJK_6 x aa in parallell makes more sense03:59
ShadowJK_uh03:59
jon_ynot sure if it'll hold more charge than 1.5v in series in weight03:59
ShadowJK_and in series :)03:59
DocScrutinizer51or 4 NiMH cells03:59
ShadowJK_9V is very expensive on energy per cost basis03:59
jon_ywell, the most important parts is getting the cells cheaply and easily :)04:00
ShadowJK_You only use 9V batteries when space is a premium04:00
jon_yI'll remember that04:00
ShadowJK_Otherwise, AAA and AA04:00
jon_yhow about those giant 6V cells? :)04:00
ShadowJK_fine04:00
ShadowJK_But disposables are meh04:00
DocScrutinizer51use 4 NiMH batteries in series and profit04:01
jon_yyeah, I should since they're pretty common04:01
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ShadowJK_6 or 8 AA in series, feeding a buck converter feeding n90004:01
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DocScrutinizer51eh buck converter04:02
DocScrutinizer51meh even ;-)04:02
jon_ywhile browsing random parts catalog, wtf is a battery authenticator???04:02
ShadowJK_Amusingly, I made a contraption for charging off of Li-Ion battery packs, and my biggest issue was that the USB extension cable I cannibalized used such thin wires, that I lost alot of power on that alone04:02
DocScrutinizer514 * 1.204:03
DocScrutinizer514* 1.4404:03
ShadowJK_4 * 0.8 is the variable I consider04:03
jon_ygotta use car jumper cables for better efficiency :)04:03
DocScrutinizer51ShadowJK_: for your cable?04:04
jon_yI assume it was from power loss due to the crappy cable resistance04:05
ShadowJK_jon_y, ues04:05
DocScrutinizer51ShadowJK_: I'm talking about 4.8 .. 5.7V on USB04:05
ShadowJK_DocScrutinizer, no I mean most generally available AA nimh will collapse to 0.8...1.1V at 1A load04:06
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ShadowJK_Not when new, of course, but subjected to half dozen cycles of abuse, they will04:06
DocScrutinizer51duh what?04:06
ShadowJK_So 4xAA direct is kinda dubious imo04:06
ShadowJK_because you wont be able to get much energy out of the batteries before the voltage drops too low04:07
jon_yhow do D cells compare to AA?04:07
ShadowJK_they hold more energy04:07
jon_yhave you tried some joule thief setup?04:07
jon_yits really hard to get it right04:08
jon_yits a high frequency DC-DC converter, iirc MHz range the last time I tried to design one04:08
jon_yit should suck the battery until it is dead04:09
jon_ydeader than dead04:09
DocScrutinizer51that's a buck converter04:09
ShadowJK_Most "joule thief" things forget that the battery they're trying to use is only able to provide X watts, and you can get this X watts a X = Volts * Amps, if you have a 100% efficient converter.04:09
ShadowJK_Nah joule thief is boost :P04:09
ShadowJK_unregulated boost even04:10
DocScrutinizer51:nod:04:10
DocScrutinizer51buck/boost whatever04:10
jon_yheh, I was having trouble controling the available current04:10
ShadowJK_Even if a battery has energy left, it isn't able to provide that energy at a fast rate04:11
DocScrutinizer51joule thief however sounds like the right name, taking into account efficiency of such a buck/boost04:11
ShadowJK_lol04:12
jon_yyeah, probably not worth the complication04:12
ShadowJK_The original joule thief itself probably runs at around 90+% efficiency04:12
ShadowJK_but it's "regulated" by the discharge into a LED04:12
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* RST38h yawns04:12
ShadowJK_Anyways04:13
ShadowJK_I have 3 different setups04:13
ShadowJK_1.5V -> 5V, 3V -> 5V, 7-18V -> 5V04:13
ShadowJK_Coincidentally, that's also in order of efficiency, with least efficient first04:14
DocScrutinizer51there has to be a reason why tool batteries are 6 cell, 7 cell, 10 cell04:15
DocScrutinizer51rather than nn Ah04:15
ShadowJK_Fewer amps are easier to handle04:16
ShadowJK_For power tools, the added complexity of charging multicell packs is less than the pain of dealing with more amps on the motor driver side04:16
DocScrutinizer51prolly04:17
ShadowJK_(except for nicd and nimh packs, which you can just bruteforce charge, and then they die 6 months later, but warranty already expired so who cares lol)04:17
DocScrutinizer51it's just amazing they seem to offer higher cellcount powerpacks for same tool04:18
ShadowJK_The "charging" bit might be inside the pack04:18
ShadowJK_A big part of it should be inside the pack04:18
ShadowJK_If you want to avoid having 12-pin packs04:19
DocScrutinizer51I'm wondering bout the discharge04:19
ShadowJK_The ones I have, have a IC controlling a few parallelled mosfets, if the voltage drops too low, or if the current is too high, the IC shuts down the fets04:20
DocScrutinizer51and likewise they probably control their motors va PWM so it doesn't matter if that 18V or 21V or even 3004:23
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ShadowJK_Yes, most of them are brushed DC motors controlled by pwm04:29
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LaoLang_coolHi, recaller sucks for call recording, too low quality04:39
LaoLang_coolany other recommended?04:39
DocScrutinizer51recaller is unique, seen no update since years, and could use some improvements and bugfixes04:42
ShadowJK_It's kinda interesting anyway, when I hear on radio interviews with people in the US that have been conducted over cellphone, the sound quality is absolutely atrocious04:43
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ShadowJK_Similar situation in .fi, and the sound quality is only slightly worse than the radio station's own broadcast quality04:43
ShadowJK_Maybe recaller was geared down to the quality benchmark of calls on US networks? dunno04:44
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DocScrutinizer51recaller needs some love from somebody like javispedro who actaully has a faint clue about audio routing and processing04:47
DocScrutinizer51other than freerunner the N900 audio is mostly a white patch on the map04:48
DocScrutinizer51spilled with bloody spots of blobs04:49
LaoLang_coolIs recaller open-source?04:49
DocScrutinizer51yes04:49
LaoLang_coolI guess the author has been left from maemo04:49
LaoLang_coolAnd abandoned recaller :)04:50
* RiD reads the highly dramatic story04:50
* RiD cries04:50
LaoLang_coolrecaller is good enough for normal voice recorder, but calling record sucks really, caller's voice sometimes is too low to hear04:51
LaoLang_coolAnd it doesn't auto-record skype's audio calling04:51
DocScrutinizer51tom waelti04:52
DocScrutinizer51nfc04:52
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DocScrutinizer05well the skype problem is easily fixed by adapting the dbus signals it listens to, but the recording path is quite a bit different for VoIP than it is for cmt based calls04:59
DocScrutinizer05you (or recaller) need to tap the audio signal somewhere, on the way from source to destination. I guess that's been done by some method a guru from Nokia mumbled after his 3rd beer in a cloudy night05:01
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RiDhttp://5z8.info/illegal-guns-for-sale_q9r9rc_racist05:02
DocScrutinizer05RiD: thanks but no thanks05:04
jonwilhi05:04
DocScrutinizer05RiD: first warning05:04
RiDOk05:04
DocScrutinizer05hi jonwil05:06
jonwilI think my wl1251-cal work is good :)05:07
DocScrutinizer05\o/05:07
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jonwillater I will be cloning libcal05:10
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Siceloanyone knows why yo can't ping 127.0.0.1 when a gprs/3g connection is active?10:25
Siceloor is it just mine :\10:26
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jonwil~seen pali16:38
infobotpali <~pali@unaffiliated/pali> was last seen on IRC in channel #maemo-ssu, 1d 6h 23m 32s ago, saying: 'jonwil has some more info about format'.16:38
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qwazixI want to remap the keyboard to have a second shift button. I've searched but I can only find how to remap symbols, not modifier keys, any pointers?17:34
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DocScrutinizer05umm, that's difficult17:41
DocScrutinizer05assignment of keys to raw keycodes is on another level17:41
DocScrutinizer05I think that part is closed17:42
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DocScrutinizer05not sure about it17:42
DocScrutinizer05but I once investigated a similar topic (showing modifier key lock-state [doublle-press] by indicator LED) and finally found out it's not feasible17:44
DocScrutinizer05since you get a dbus-msg for locking the key, but none for unlocking it17:45
qwazixI saw that xmodmap might be the way to go17:45
DocScrutinizer05and I've been told the code where locking happens is closed17:45
qwazixthanks, I'll try and report back17:46
DocScrutinizer05many thanks17:46
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qwazixDoesn't seem to do anything on the N950, in fact it like disables the key17:55
DocScrutinizer05for N950 please /join #harmattan. The info about stuff like that is massively different between fremantle and harmattan I'd guess17:57
jonwilyes definatly17:58
DocScrutinizer05to make things worse, harmattan isn't really designed for a device with hw-kbd17:58
Venemo_N9indeed17:58
qwazixyep, that is why I asked here, because N900 remapping works perfectly on the N950, in fact I am using a N900 keymap right now17:59
trxthose keys are not native17:59
qwazixanyway I'll try it right now on the N900 too to see if it behaves similarly17:59
trxthey arent sent in native key codes but via Qt's InputMethod18:00
trxmaybe check that..18:00
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DocScrutinizertime for 12648430   ☕18:00
qwazixtrx: I am trying to do that in a gtk application18:00
trxoh18:01
trxnfc then18:01
DocScrutinizer05hey, true crossover \o/18:01
Sicelosilly question - you N900s allow to ping localhost when a gprs/3g connection is active?18:04
DocScrutinizer05I'd think yes18:05
qwazixpermission denied18:05
DocScrutinizer05Sicelo: I seen your question, but been to lazy to *test*18:05
qwazixSicelo, ^^18:05
DocScrutinizer05too*18:05
Siceloqwazix: root should be able to.18:06
DocScrutinizer05yep18:06
Sicelofor as long as i can remember localhost doesn't reply to ping on mine. i just find this strange. of course, without such a connection, it works normally18:07
DocScrutinizer05I seem to recall users logging in via ssh root@127.0.0.118:08
DocScrutinizer05never heard that ceases to work when you're on GPRS18:08
javispedromeh18:08
Siceloit doesn't, i suppose .. let me try18:08
DocScrutinizer05javispedro: hey! :-d18:09
DocScrutinizer05:-D18:09
Siceloworks18:09
javispedro:)18:09
DocScrutinizer05Sicelo: so if ssh 127.0.0.1 works, why should ping fail? unless IP stack doesn't support ping replies18:10
Sicelothat's the puzzle. :/18:10
DocScrutinizer05(which actually might be a good thing when on GPRS)18:10
javispedroa ping to localhost would be routed via loopback interface on any sane config, so wlan/3g/whatever will not have any influence18:11
kerioDocScrutinizer05: meh, would that actually save battery?18:11
kerioit still receives them18:11
DocScrutinizer05you don't want to answer pings from the internet when on 2/3G18:11
Siceloagree with javispedro.18:11
kerioyou don't want to receive them, either18:11
DocScrutinizer05kerio: yes, it might save battery18:11
DocScrutinizer05javispedro: 2/3G *config* of IP stack however might actually have an influence18:12
Siceloon a side note, i never have to worry about pings from internet as i'm behind NAT anyway18:12
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DocScrutinizer05javispedro: I dunno how to tell IP stack "don't answer ping ICMP" -  but I guess it might be interface agnostic18:13
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DocScrutinizer05a ping to local NIC is rather meaningless anyway18:14
DocScrutinizer05hell, 127.0.0.1 is not even any NIC18:14
Sicelo:P18:15
kerioby the way, why doesn't busybox allow ping from user?18:17
qwazixXmodmap has the same behaviour on N900 too, it just disables the key18:17
Sicelokerio: suid thingies .. you can change the behaviour18:18
kerioSicelo: nope18:18
DocScrutinizer05Sicelo: anyway, just for you: confirmed18:18
kerio/bin/ping is a symlink to messybox18:18
keriowhich is already suid root18:18
DocScrutinizer05Sicelo: ping 127.0.0.1 fails on GPRS18:19
keriowat18:19
Siceloah, thanks :)18:19
kerioDocScrutinizer05: ssh?18:19
DocScrutinizer05Sicelo: while it works when on WIFI18:19
Siceloi was worried that i had somehow messed something up in the past18:19
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Sicelokerio: ssh localhost will work .. only ping seems to exhibit this behaviour. and, yes, you can toggle that suid bit to allow user to use ping. i have that setup on my N90018:20
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Sicelo$ stat /usr/bin/ping18:24
SiceloAccess: (4755/-rwsr-xr-x)18:24
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keriowell, you have a better ping18:33
kerioi'm talking about /bin/ping :)18:33
kerioinstalling ping from the sdk repos and suiding it makes it work, ofc18:34
DocScrutinizer05you can't set +s a symlink afaik18:34
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DocScrutinizer05and even if you did, it won't help much, since: see ~messybox  ->su18:35
DocScrutinizer05whole reason we got that gainroot abomination18:36
kerioheh18:36
keriowait, why'18:36
kerio?18:36
DocScrutinizer05??18:36
Sicelolrwxrwxrwx    1 root     root           13 Oct 31  2011 /bin/ping -> /usr/bin/ping18:36
keriothe gainroot abomination is to enable root access only if the device is set in r&d mode18:36
Sicelokerio: i have the very same ping you have18:36
kerioSicelo: you don't even need that, /usr/bin is earlier in the path than /bin18:36
kerioSicelo: nope18:36
DocScrutinizer05kerio: no18:37
DocScrutinizer05~messybox18:37
infobotmessy... err busybox is meant for lean scripting. Regarding all the missing options and immanent limitations (see su) it's not really the interactive shell of choice. A lot of people hate busybox because a lot of system integrators don't understand the difference between busybox and a decent user interactive shell plus unix utils18:37
kerioSicelo: ping by default is a symlink to busybox18:37
DocScrutinizer05su can't work with a semi safe busybox18:37
kerio/usr/bin/ping is in the "ping" package18:37
DocScrutinizer05that's also the reason why sudo is NOT busybox18:37
kerioholy shit, i didn't know that18:37
kerioi thought it *was* suid root18:38
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DocScrutinizer05wut? messybox +s? :-O  God beware18:38
keriowell, that's how embedded systems do it, isn't it18:38
keriowell, they just run everything as root anyway18:39
* kerio has sudo nopasswd enabled for user, because otherwise too much shit breaks18:39
Sicelook. guess i took it for granted18:39
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DocScrutinizer05and btw THAT is a immutable shortcoming of messybox that no messybox-DOUBLESUPERCOWPOWER will cure18:40
keriowhat about a messybox-replacement that installs real tools? :D18:41
Sicelothis N900 has not seen a reflash in its life (except on the day it was bought) .. so i forget what i installed/tweaked/etc to get to the current setup18:41
DocScrutinizer05kerio: that's caled bash4 + *-tools18:41
DocScrutinizer05s/tools/utils/18:41
infobotDocScrutinizer05 meant: kerio: that's caled bash4 + *-utils18:41
kerioyou mean *utils18:42
DocScrutinizer05Sicelo: get my awesome apt wrapper! ;-D18:42
DocScrutinizer05~jrtools18:42
infobotfrom memory, jrtools is http://wiki.maemo.org/User:Joerg_rw/tools18:42
keriodon't, it's useless if you have updated stuff correctly18:42
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DocScrutinizer05Sicelo: you'll never ever forget what you installed ;-)18:42
keriooh, that other one18:43
Sicelo:P18:43
kerioDocScrutinizer05: there's also dpkg --get-selections18:43
Sicelothat's one of the wiki pages i know by heart now18:43
DocScrutinizer05the augmented version now even comes with timestamps ;-P18:44
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DocScrutinizer05so you can tell WHEN you installed something18:45
DocScrutinizer05cat $HOME/installed-aps.sh18:45
DocScrutinizer05FTW18:45
DocScrutinizer05and simply run that very $HOME/installed-aps.sh to reinstall everything18:46
DocScrutinizer05convenient, isn't it? ;-)18:46
kerioDocScrutinizer05: also known as dpkg --clear-selections && dpkg --set-selections < packagelist18:47
kerioand then apt-get install -f18:47
DocScrutinizer05kerio: where are the timestamps?18:47
keriomeh, time is a cube anyway18:48
DocScrutinizer05and dpkg is a PITA ;-P18:49
DocScrutinizer05actually apt-get is18:49
DocScrutinizer05s/apt-get/apt/.18:49
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* DocScrutinizer05 will never get the catch why to mess with 3 or 4 or 15 commands - like apt-cache apt-get dpkg et al - to do one job: manage package installations18:51
kerioapt-cache involves the cache!18:51
kerioapt-get involves getting! and sometimes removing18:51
DocScrutinizer05I don't give a shit18:51
kerioapt-file involves files18:51
keriowhich is clearly something the other two utilities don't involve18:51
DocScrutinizer05failwhale18:52
kerio*cow18:52
Siceloprefer yum?18:52
DocScrutinizer05:nod:18:53
kerioapt can solve dependency sudoku18:53
keriocan yum do the same?18:53
Siceloyes18:53
DocScrutinizer05and my microwave can make eggs go pooof18:53
javispedrogood analogy.18:53
javispedroDocScrutinizer05: btw, upstream debian now has aptitude18:54
kerioby default? :O18:54
keriomadness18:54
javispedroyeah, by default.18:54
DocScrutinizer05which is kinda yum in disguise (or the other way round)18:54
javispedroit's only like 20 times slower than apt-get here :)18:54
DocScrutinizer05well, we got HAM for that ;-P18:55
DocScrutinizer05it'd be rather more interesting to compare aptitude speed to yum18:55
kerioby the way, HAM stopped taking 12 minutes for his things, for some reason18:55
keriothe some reason could be that i disabled "show all packages"18:55
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DocScrutinizer05X-P18:55
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DocScrutinizer05alias yum=aptitude18:56
DocScrutinizer05will probably go unnoticed18:57
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kerioapt4rpm!18:57
javispedromeh, yum has install-file ;P18:57
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zeqI've put updated libc6 bits up on http://www.snewbury.org.uk/maemo/sigmask19:21
zeqthere's still the issue of of it needing to depend on a "Provides:" for the kernel support, and suitable headers.19:23
keriokernel-feature-pselect?19:27
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keriowhat happens if i stop bme and connect the wallcharger?19:29
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zeqkerio: probably "kernel-feature-sigmask-syscalls" would be more accurate, but I'm open to suggestions.19:33
keriodiscuss it with pali, i suppose19:35
jon_yhey guys, what does pselect do?19:35
kerioand/or merlin199119:35
kerioand/or freemangordon?19:35
jon_y~pselect19:36
keriojon_y: like select, but it allows to specify, atomically, a signal mask19:36
jon_yunix signals?19:36
kerioyep19:36
jon_yso I suppose its mainly advantageous for multithreaded apps?19:37
keriohow "solid" is the screen slide?19:37
jon_ypselect is related to the screen slide?19:38
keriono, it's unrelated19:38
keriowhy should it be related?19:38
keriowell, dbus uses pselect a lot, apparently19:38
DocScrutinizer05~pselect is <reply>like select, but it allows to specify, atomically, a signal mask19:43
infobotokay, DocScrutinizer0519:43
DocScrutinizer05[2012-08-04 18:38:41] <kerio> well, dbus uses pselect a lot, apparently))  which might explain a lot of WTF to be seen everyday with dbus19:45
DocScrutinizer05not that dbus would actually need any pselect() bug to be a POS19:45
DocScrutinizer05there've been other races generic to dbus, that obviously were hard or even impossible to fix19:46
DocScrutinizer05and I bet my ass that dbus on x86 isn't any better19:48
DocScrutinizer05probably 50% of KDE4-WTF are due to dbus issues19:48
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DocScrutinizer05zeq: have you checked https://bugs.launchpad.net/ubuntu/+source/linux/+bug/319729/comments/23 ?20:11
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DocScrutinizer05damn that's sad it takes us >2 years to get an upstream patch into consideration at least20:16
kerioheh20:18
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DocScrutinizer05it's even more sad that even those "experts" on https://bugs.launchpad.net/ubuntu/+source/linux/+bug/319729 didn't really think of any other impact than udev/upstart20:25
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RST38hMeanwhile: http://www.nature.com/news/human-cycles-history-as-science-1.1107821:46
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vi__WTS:1x950. Serous offers only.23:09
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DocScrutinizer05WTS?23:57
DocScrutinizer05~wts23:57
DocScrutinizer05~wtf wts23:57
infobotGee...  I don't know what wts means...23:57
jacekowskiwant to sell23:57
DocScrutinizer05I'd bett you got better chances on ebay or at least tmo23:58
DocScrutinizer05damn, I'm starting to go legastenic23:58

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