IRC log of #maemo for Tuesday, 2018-06-26

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OksanaAfter installing python2.7, pyversions -i (or -s) still gives only python2.506:19
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DocScrutinizer05how would pyversions know which versions are installed?07:36
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DocScrutinizer05not that it couldn't tell, but prolly knowing how it works helps spotting the "problem"07:38
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brolin_empeyIt occurs to me that fax and SMS and maybe even Telex can be considered a form of electronic mail.09:22
KotCzarnymessaging. mail is also a form of messaging09:22
brolin_empeyYes.09:23
brolin_empeyHas the “People’s Republic of China” truly had USA DARPA Internetwork connectivity only since 1994, like Wikipedia says?09:25
MaxdamantusPresumably you could always have just used dial-up.09:30
Maxdamantus(using a service provider in a different country, if none existed within China)09:31
brolin_empeyThe .tw WHOIS server says that some .tw domain names, at least asus.com.tw , have existed since the 1980s, which suggests that the Republic of China had USA DARPA Internetwork connectivity before both the World Wide Web existed (project was proposed in 1989) and before the PRC had USA DARPA Internetwork connectivity.09:32
MaxdamantusWikipedia says: > China has been on the internet intermittently since May 1989 and on a permanent basis since 20 April 1994.09:32
MaxdamantusI don't think that's particularly late tbh09:33
KotCzarnytaiwan != china (especially in 90s)09:33
MaxdamantusYeah, but he's talking about China, not Taiwain09:34
MaxdamantusTaiwan = Republic of China09:34
MaxdamantusChina = People's Republic of China09:34
KotCzarnybut it was special case09:34
Maxdamantusunless he misspoke.09:34
KotCzarnythey had some independence09:34
KotCzarnythat's why in 90s taiwan != china09:34
MaxdamantusApparently internet was only in this country (New Zealand) in 1989 too.09:36
Maxdamantusat a particular university, not available in general.09:36
Maxdamantusbut in any case, we still had phonelines, so people could have dialed up themselves to offshore ISPs beforehand.09:37
brolin_empeyMainland China was the original Republic of China from 1912 to 1949, when mainland China became the People’s Republic of China and Taiwan became the current Republic of China.09:39
KotCzarnyyes, but it still had some independence till some event in 90s/early 200009:40
Maxdamantuswhen you say "The Republic of China", do you mean by name, or by some other sort of identity of the people in control?09:40
MaxdamantusI'm not particularly familiar with the history, but statements like that seem kind of vague. Presumably it should involve something more than which government used which name.09:42
KotCzarnyHowever, references to the province is now rare since the Taiwan Provincial Government has largely been dissolved and its functions transferred to the central government or county governments since 199709:43
KotCzarnyso, as i've said, till '97 it was a province of china, but rules were more lax then09:44
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buZzha, just got someone excited for maemo/n90009:49
buZz(said person was planning to get a android phone to do -development- on it)09:50
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brolin_empeyMaxdamantus: By name.  The original Republic of China, governed by the Kuomintang and led by Chiang Kai-shek, lost the Chinese Civil War to the Communist Party of China, led by Mao Tse-tung, who established the People’s Republic of China in mainland China in 1949, which is why 1949‑10‑01 is National Day in the PRC.  The Kuomintang fled to Taiwan and established Taiwan as the current Republic of China.  The PRC has never controlled Taiwan.  The ROC09:55
brolin_empeycontinued to represent “China” in the United Nations until 1971, when the ROC lost its seat to the PRC.  Since then, Taiwan/ROC is the both the largest country by population and the largest economy outside of the UN.09:55
brolin_empeyThe One China Policy is the party line of the PRC.10:02
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brolin_empeybuZz: The Nokia N900 can somewhat run Android as the host OS and some computers that ship with Android can also somewhat run GNU+Linux as the host OS.  Even the Nexus One from 2010 can run Debian GNU+Linux as the host OS but without cellular telephony capability when I last checked years ago.10:26
buZzbrolin_empey: thats a huge benefit10:26
buZznonworking cellular a) makes battery lasts longer b) increases privacy of the device10:27
buZzand c) prevents harrassment while working on something10:27
KotCzarnyjust buy a tablet?10:27
buZzKotCzarny: no clue what you're saying10:27
KotCzarnyandroid without cellular10:27
buZzwhich maemo tablet are you talking about?10:27
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buZzi dno why we're discussing android?10:27
buZznobody wants android at all10:28
KotCzarnyit has its uses10:28
buZzbeside alarmclock , i havent found any use for android10:29
buZzbut sure, if you wanna lower standards to it, you can10:29
KotCzarnytv boxes10:29
buZzkodi runs on linux just fine10:29
KotCzarnyas long you have cpu power or hw accelerated decoding10:30
buZzsure, like a raspi110:31
KotCzarnyi like oranges10:31
brolin_empeybuZz: I did not say without cellular connectivity, I said without cellular telephony capability.  It may have working cellular data connectivity.10:34
buZzbrolin_empey: thats horrible :P10:34
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ceeneis there anyway to look at serial console output, messages from the kernel, etc, from an ssh connection?13:26
KotCzarnycat /proc/kmsg ?13:27
KotCzarny(about kernel messages)13:27
ceenethat may be good enough13:28
ceenethanks!13:28
ceenei have a remote thing that is oopsing13:28
ceene2.6.34 kernel, modern as it comes13:28
KotCzarnymaybe ttylog too13:29
KotCzarnyie. ttylog tty13:29
ceenei'd rather not have to install anything else13:30
ceeneembedded systems are a pain in the ass13:30
KotCzarnymaybe it's already installed13:30
KotCzarnyor available in busybox13:30
ceenenope13:31
KotCzarnyalso: t=`tty`; setconsole $t13:31
KotCzarnyhttp://old.easyco.com/easydocs/linux/man/man8/setconsole.htm13:32
ceenei don't have setconsole even on my pc13:32
KotCzarnymight be what you need13:32
ceene /proc/kmsg may be enough13:33
ceenenow i need to be able to trigger this oops on command13:33
ceenebecause up to now seems completely random13:33
KotCzarnyin slackware: ./a/kbd-1.15.3-i586-4.txz: /usr/bin/setconsolefont13:33
KotCzarnyerm. wrong13:33
KotCzarnyscratch the last comment ;)13:33
ceenelol13:33
KotCzarnyyou are right, it might be either very old command or rh specific13:34
KotCzarnycat /dev/console might be also a trick13:35
KotCzarnyeasiest to trigger kernel output is swapon/swapoff13:36
ceenethere's no swap on this thing :)13:36
KotCzarny8MB swapfile ?13:37
ceenena13:37
ceenei'll wait and see what happens with /proc/kmsg13:37
ceenei have a remote person too, who can provide me logs when required13:37
ceenebut i didn't want to bother him13:37
ceeneso i'm bothering you :D13:37
KotCzarnynot bothering at all13:38
ceenethis oops is also ancient13:38
KotCzarnywriting some script so i can multitask13:38
ceenenowadays oopses are more verbose13:38
ceenei don't understand a thing13:38
KotCzarnydepends on kernel options13:38
KotCzarnyusually i only understand which module it occured13:38
ceeneit's telling me that it occured on one task that is a program i wrote13:39
ceenebut at the moment of the oops, this program is only doing mathematical calculations13:39
KotCzarnyoh, right, dividing by 0 in c program might also trigger oops13:39
KotCzarny:)13:39
ceeneand shm read/write access13:39
ceenewell, dividing by 0 segfaults, not oops13:40
KotCzarnyhmm, right13:40
ceenedoesn't segfault either, does it?13:40
ceenesimply crashes the process13:40
ceenebut not the kernel13:40
ceeneit also complains Kernel panic - not syncing: Fatal exception in interrupt13:40
KotCzarnyunless it's a kernel module13:40
ceeneso i'm not sure if the problem is inside an interrupt service routine13:40
KotCzarnymight be simply corrupting memory13:40
ceeneor if it's just a consequence of the oops13:40
ceeneUnable to handle kernel paging request for data at address 0x0000000013:41
ceeneFaulting instruction address: 0x400155b013:41
ceeneOops: Kernel access of bad area, sig: 11 [#1]13:41
ceenethere's some null dereferencing13:41
ceenethat's clear13:41
KotCzarnyYUP13:41
KotCzarnysegv in kernel code results in oops13:41
ceenebut where is it? I mean, I think I know which kernel module would be at fault, because this platform uses a driver written by the company that provides us the hardware13:41
ceeneso i guess it's their fault13:42
KotCzarny:>13:42
KotCzarnyquality vendor code13:42
ceenebut where in the hell that is that piece of code lies the problem? that's a mistery13:42
KotCzarnybinary too?13:42
ceeneno, at least i have the source13:42
KotCzarnyrecompile with lots of printk13:42
KotCzarnyor use kgdb13:42
ceene  76513 total13:43
ceenethat's quite a few lines to read13:43
KotCzarnyfor a start add printk("%s\n",__func); in ever function start13:44
KotCzarny;)13:44
KotCzarnys/__func/__func__13:44
ceenefirst i'm trying to make the oops repeatable13:44
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ceeneif I had to guess, i'd say it should be due to the dma functions13:46
ceenebecause that's the only thing that is happening: lots of dma transfers to userspace13:46
ceenebut, who knows what else is it doing on the background13:46
KotCzarnyjust add printk i've mentioned to every function with some sed13:47
ceenebut that's not going to serve much if i don't know how to make it crash13:47
ceeneit may happen today, or maybe tomorrow13:47
ceenei need to make it happen fast enough13:47
KotCzarnycheck logs around time it happened13:47
KotCzarnymaybe there will be some clue13:48
ceenenope, nothing13:48
ceenereading the Call Trace and looking at System.map, I may know where's the origin14:00
ceeneit may be some access to a strange serial device14:00
ceeneso i'm forcing lots of read/writes through that device, to see if something happens14:00
ceenegonna have lunch meanwhile, let's see if it breaks then14:01
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ceenenothing happened15:25
ceenegrrr15:25
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DocScrutinizer05brolin_empey: AFAIK Taiwan was totally unrelated and almost at war with mainland China until maybe 20 or 30 years ago. Now they have somewhat better standing with each other but still are two totally separate states16:28
DocScrutinizer05who represented China in UN is another highly intriguing topic16:29
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DocScrutinizer05Taiwan basically is under protectorate of USA16:29
DocScrutinizer05there were times when there were MEGA speakers on the common costline, to bridge the several seamiles with mere sound and annoy the opponent16:31
DocScrutinizer05iirc16:31
Wizzupthis was true for korea until a few weeks ago16:31
DocScrutinizer05yeah16:31
DocScrutinizer05they have a common land vorder though16:32
DocScrutinizer05border16:32
DocScrutinizer05~wp taiwan16:32
DocScrutinizer05~wiki taiwan16:32
infobotAt https://en.wikipedia.org/wiki/Taiwan (URL), Wikipedia explains: "{{other uses}} {{redirect|Republic of China|the People's Republic of China|China|other uses|Republic of China (disambiguation)}} {{pp-move-indef|small=yes}} {{pp|small=yes}} {{short description|State in East Asia}} {{EngvarO|date=December 2016}} {{Use dmy dates|date=August 2017}} {{Infobox country | conventional_long_name = Republic of China | common_name = Taiwan | native_name = ...16:32
DocScrutinizer05"recently" a president or governor or whatever been elected in Taiwan who followed a strong policy of "one China" in some way, and that led to quite some turmoil16:40
DocScrutinizer05to call mainland and Taiwan one country is almost like back when you would have called GDR and Western Germany one country16:43
bencohceene: don't you get a stack trace when your kernel segv?17:06
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ceenebencoh: yes, I was missing the fact that this kernel is compiled without CONFIG_KALLSYMS17:08
ceeneso the backtrace was pretty useless17:08
ceenebut I found the matching System.map file17:08
ceeneso now I know which driver is responsible, this seem to be triggered by the IRQ service routing of a strange serial driver17:09
ceenebut I haven't been able to replicate it at will17:09
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ceenei'm stresssing that serial port as a bitch, with no oops17:09
DocScrutinizer05https://en.wikipedia.org/wiki/File:101.portrait.altonthompson.jpg  www.linkedin.com/in/joerg-reisenweber  ;-)17:14
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DocScrutinizer05ugh what? linkedin doesn't show my profile to non-"members"?17:16
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bencohdepends on the profile17:18
bencohbasically that's configurable iirc17:19
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DocScrutinizer05bencoh: so can you visit http://www.linkedin.com/in/joerg-reisenweber ?17:43
DocScrutinizer05aaaand are you a linkedin victim?17:43
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bencohDocScrutinizer05: it asks me to join17:45
DocScrutinizer05that's what I ranted about17:45
bencohDocScrutinizer05: and I do have a linkedin profile17:45
bencohyeah :)17:46
DocScrutinizer05aaah so maybe only for members17:46
bencohyou can set it to be public as well if you want (or so I recall)17:46
DocScrutinizer05I did17:46
bencohhmm, strange then17:46
bencohwait, maybe they changed their policy17:47
bencoheven supposedly public, google-indexed profiles still redirect to that page17:49
bencoh(say, torvalds, for instance)17:49
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DocScrutinizer05and proxy on startpage gets 40318:06
bencohproxy?18:10
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