IRC log of #maemo for Monday, 2019-02-25

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Wikiwidelibc6 contains timezone data. Does it have any modifications between CSSU-Testing and CSSU-Devel?12:59
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WikiwideUnder what circumstances is upgrading kernel likely to end up with a bricked device? Keep in mind that USB port is broken.13:03
WikiwideNo, multiboot is not installed.13:04
unrestif you have no way of altering the kernel line in the bootloader and if no safe kernel is still available13:04
unrestidk how maemo handles kernel updates or whether it retains a "failsafe" kernel13:05
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KotCzarnyif you dont have uboot installed, it's written directly to nand space13:06
WikiwideSo, I should install uboot first?13:06
KotCzarnyso no, writing bad kernel will get you a brick, which requires usb to fix13:06
infobotN900 uBoot is a siamese twin binary [uBoot+stockMaemoKernel] that resides in kernel NAND partition /dev/mtd3 aka "kernel". You can't uninstall it, rather you'll nuke it when you flash/install another kernel like stock maemo kernel or powerkernel. To start other than stock maemo kernel via uBoot, you have to provide the according kernel image files, or
infobotwell, multiboot is, or **DEPRECATED*, see ~maemo-multiboot13:07
WikiwideIf I already have kernel power installed, is it safe to install uboot?13:08
infobotextra, extra, read all about it, maemo-multiboot is deprecated, and a horrible hack.  PROBLEMS WITH NITDROID/MULTIBOOT? reflash rootfs&kernel aka COMBINED13:08
KotCzarnyread the thread about uboot13:08
KotCzarnysince you have broken usb port it will be tricky to fix if you do something wrong13:09
WikiwideI remember it in connection with having one device that doesn't work because of combination of multiboot, kernel upgrade and broken USB port13:09
KotCzarnyforget about multiboot13:09
WikiwideHAM is the safest, regarding dependency hell. But it will not protect against empty battery...13:12
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WikiwideIn HAM, kernel power is the closest, but it is 53, not 52.13:15
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WikiwideI don't get it. I can find , but I do not see anything like "u-boot-flasher for power kernel v52", yet13:28
KotCzarnyextras-devel. its not what you want.13:29
WikiwideNo idea. I just want to get system into working, consistent state where date doesn't disagree with GUI about what the timezone is.13:30
KotCzarnyhow is wrong timezone related to kernel in your case?13:31
WikiwideI know that current kernel is power v52, and ham has been nagging me for ages to upgrade to v53 or something.13:32
KotCzarnyv53 here13:33
KotCzarnyif you dont have uboot/multiboot, then i guess upgrading to v53 should just work?13:33
WikiwideWrong timezone might be coming from a disagreement between some libraries. I don't know. So I want to get ham's question out of the way and see that yes, with everything upgraded, date is still not consistent.13:33
WikiwideShould just work... At what voltage is it safe to upgrade without having nand flashing interrupted mid-way?13:34
KotCzarnysince you are charging your battery outside, just charge it fully?13:35
WikiwideOkay... Anything about free space on rootfs, homefs or MyDocs?13:35
sixwheeledbeastif uboot is installed it should just work with kp5313:36
KotCzarnyswb: does order of installing uboot and kp53 matter?13:37
WikiwideI have available : 44MB on /, 63MB on /home, 38MB on MyDocs.13:37
sixwheeledbeastI wouldn't expect so, but IDK13:37
WikiwideU-boot is not installed, at the moment. kp52 is installed.13:37
sixwheeledbeastit's a separate package kernel-power-bootimg13:38
sixwheeledbeastvia HAM it would be "U-Boot with kernel 2.6.28-omap1 and Linux kernel for power user (boot image for U-Boot)"13:38
WikiwideI have kernel-power               1:2.6.28-10power52 , flasher and modules too. I don't have kernel-power-bootimg installed. HAM has U-Boot with kpv53.13:40
sixwheeledbeastAs for battery I have no idea, it's not easy to stay either because each battery is in a different state. Normally full to maybe half is recommended13:43
sixwheeledbeastFor any serious update/upgrade13:43
WikiwideSo, if I install u-boot-flasher and kernel-power-bootimg v52, it should work?13:44
WikiwideNay, apt-get disagrees.13:45
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WikiwideSo, get full battery and just upgrade everything.13:48
MaxdamantusDo you have a second device to experiment with?13:52
Maxdamantusso you don't just brick your only one by doing something you don't quite understand?13:53
Maxdamantus(I wouldn't claim to understand it either; I've only ever flashed over USB, not from the device)13:53
WikiwideNot sure. I might have one device with working USB port somewhere...13:53
WikiwideI am not a fan of flashing in general.13:54
Maxdamantus(though I know how my boot sequence works, and it involves having a u-boot that looks first on the SD card, so I can always recover using that if my USB stops working)13:54
MaxdamantusYeah, that's why you just install u-boot once and don't touch it again.13:55
WikiwideWhy cannot a device have only memory cards, instead of solder-on memory chips?13:55
Maxdamantussince u-boot should then look on SD/eMMC for configuration.13:55
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WikiwideI have no memory card, yet. And my eMMC doesn't have much space on it...13:56
WikiwideSpeed is a valid argument. Price isn't.13:56
KotCzarnyit is when you cut costs13:57
KotCzarny(from manufacturer side i guess)13:57
KotCzarnyalso in support costs/time13:57
WikiwideI guess...13:57
KotCzarnywhen people start buying cheapest sh*t sdcards13:57
KotCzarnyand they die after few weeks13:57
sixwheeledbeastreliability ^13:58
WikiwideBut support costs would have been minimised by using memory card for booting13:58
sixwheeledbeastPlus it wasn't a common idea until RPi13:59
KotCzarnyswb: many allwinner tablets used sdcard for rootfs13:59
KotCzarnyin the A10 era13:59
WikiwideQuality... That's tricky. Don't factories have quality control these days?13:59
KotCzarnybut those were most often nonames, with no support from vendor at all13:59
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KotCzarnywikiwide: quality control nowadays is controlled by profits14:00
KotCzarnyand you dont get profits if users dont buy more14:00
KotCzarnyie. cars breaking just after 3-4 years14:00
sixwheeledbeast^ QC will have tolerance14:00
KotCzarnyso basically its 'push it out, sell them more'14:00
sixwheeledbeastCertainly in a consumer market it is.14:01
MaxdamantusI imagine there shouldn't be an inherent reason why it should be faster.14:03
sixwheeledbeastI have just replaced some capacitors that where clearly fitted due to price.14:03
MaxdamantusIf the interface used by the eMMC chip is better, why not just sell cards with that chip?14:03
sixwheeledbeastTo anyone else the device was throw away it's done 6 years14:04
KotCzarnyeven seen emmc on a subcard with pins?14:04
KotCzarnythey are bulky14:04
Maxdamantusas in a NAND chip?14:05
KotCzarnyas in emmc expansion card14:05
MaxdamantusI thought the eMMC chip was already kind of encapsulated.14:05
sixwheeledbeastSwapped Decon for Jamicon, yer not the best replacements but there are other components that will likely fail first.14:05
KotCzarnyMaxdamantus: but you still have to connect to the system somehow14:05
KotCzarnyand if you want faster interface, it needs more lines14:05
KotCzarnyan example14:06
DocScrutinizer05folks, this looks not all bad:
DocScrutinizer05though the SoC... well nowadays you have to be happy if your SoC *allows* multiboot14:16
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