Re: [Zaurus-devel] Zaurus CF tests -- ok
> Hi! > > Backtrace from QEMU ... I think this is what Cyril observed. But heck, > > it happens in QEMU too ;-) > > Yes, that is pretty much it. > > It happens randomly, eg. adding printk() line into kernel code > (somewhere in mmc stack). Or sometimes crashes in the pccard > initalization when two cards are inserted at the boot time. > It happens randomly in qemu too. > -- > metan ___ Zaurus-devel mailing list Zaurus-devel@lists.linuxtogo.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/zaurus-devel
Re: [Zaurus-devel] Zaurus CF tests -- ok
Hi! > Backtrace from QEMU ... I think this is what Cyril observed. But heck, it > happens in QEMU too ;-) Yes, that is pretty much it. It happens randomly, eg. adding printk() line into kernel code (somewhere in mmc stack). Or sometimes crashes in the pccard initalization when two cards are inserted at the boot time. -- metan ___ Zaurus-devel mailing list Zaurus-devel@lists.linuxtogo.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/zaurus-devel
Re: [Zaurus-devel] Zaurus CF tests -- ok
On Saturday, April 16, 2011 09:41:34 AM Pavel Machek wrote: > Hi! > > > > After getting _good_ power supply, I was able to untar and rm ltp tree > > > 100 times so far. 2.6.38, ext3. (So metan no, I do not see any weird > > > ext3 problems). > > > > Hmm, I'm using original adapter, but who knows if it's okay to use... > > It probably is... > > > > Another strange thing is... I see lots of duplicated keystrokes -- > > > like type "pavel" but machine understands "paavel". But it only seems > > > to happen when I'm _not_ trying to debug it?! > > > > That seems to be side effect of machine under load (it has gpio > > keyboard). > > ouch. original corgi_kbd driver used timers, new one uses threads -- > more affected by scheduling. I'm not even sure if the worker thread it > uses runs at elevated priority... > > > > With power from USB extension cable, it crashes in <5 minutes. It > > > seems to toggle charger a lot, as voltage on the cable is only > > > 4.2..4.5V. I guess it is software problem in the charging code. > > > ) > > > > The zaurus actually is AFAIK unable to run from battery when connected to > > the external power, so weak power line may explain some of the strange > > behaviour. > > ?? IIRC Stanislav told me that hardware will always run off whatever > is available...? > Pavel Backtrace from QEMU ... I think this is what Cyril observed. But heck, it happens in QEMU too ;-) Unable to handle kernel NULL pointer dereference at virtual address pgd = c0004000 [] *pgd= Internal error: Oops: 17 [#1] PREEMPT last sysfs file: CPU: 0Not tainted (2.6.39-rc5+ #81) PC is at complete+0x30/0x90 LR is at giveback+0x134/0x150 pc : []lr : []psr: a193 sp : c782ff08 ip : c782fec8 fp : c782ff1c r10: c02b78c4 r9 : c7828720 r8 : c880c000 r7 : c7865828 r6 : c7865894 r5 : c7865828 r4 : a113 r3 : c782e000 r2 : 0102 r1 : f2e0 r0 : Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel Control: 7977 Table: a5774000 DAC: 0017 Process ksoftirqd/0 (pid: 3, stack limit = 0xc782e278) Stack: (0xc782ff08 to 0xc783) ff00: 6113 c010497c c786f4d8 c786f4d8 c023c984 ff20: c786f4d8 c7868760 c7865878 c023cc28 c786f4d8 6113 ff40: c02e2980 c02b7a3c 0101 0008 c02b78c4 c0
Re: [Zaurus-devel] Zaurus CF tests -- ok
Hi! > > After getting _good_ power supply, I was able to untar and rm ltp tree > > 100 times so far. 2.6.38, ext3. (So metan no, I do not see any weird > > ext3 problems). > > Hmm, I'm using original adapter, but who knows if it's okay to use... It probably is... > > Another strange thing is... I see lots of duplicated keystrokes -- > > like type "pavel" but machine understands "paavel". But it only seems > > to happen when I'm _not_ trying to debug it?! > > That seems to be side effect of machine under load (it has gpio keyboard). ouch. original corgi_kbd driver used timers, new one uses threads -- more affected by scheduling. I'm not even sure if the worker thread it uses runs at elevated priority... > > With power from USB extension cable, it crashes in <5 minutes. It > > seems to toggle charger a lot, as voltage on the cable is only > > 4.2..4.5V. I guess it is software problem in the charging code. > > ) > > The zaurus actually is AFAIK unable to run from battery when connected to the > external power, so weak power line may explain some of the strange behaviour. ?? IIRC Stanislav told me that hardware will always run off whatever is available...? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html ___ Zaurus-devel mailing list Zaurus-devel@lists.linuxtogo.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/zaurus-devel
Re: [Zaurus-devel] Zaurus CF tests -- ok
On Friday, April 15, 2011 11:38:17 PM Cyril Hrubis wrote: > Hi! > > > After getting _good_ power supply, I was able to untar and rm ltp tree > > 100 times so far. 2.6.38, ext3. (So metan no, I do not see any weird > > ext3 problems). > > Hmm, I'm using original adapter, but who knows if it's okay to use... I can lend you Eric's, but promise you won't break it or do anything weird to it ;-) > > > Another strange thing is... I see lots of duplicated keystrokes -- > > like type "pavel" but machine understands "paavel". But it only seems > > to happen when I'm _not_ trying to debug it?! > > That seems to be side effect of machine under load (it has gpio keyboard). Yea ... it's that polled para-keyboard I guess. > > > ( > > So... just because something needs 5V does not mean you should charge > > it from USB. > > > > Yes, I'm talking about zaurus. I noticed that it crashed rather > > quickly when connected to USB power. (For example in tar/rm test). > > So I took multimeter, and there was 4.15..4.5V on USB :-(. > > > > With power from USB extension cable, it crashes in <5 minutes. It > > seems to toggle charger a lot, as voltage on the cable is only > > 4.2..4.5V. I guess it is software problem in the charging code. > > ) > > The zaurus actually is AFAIK unable to run from battery when connected to > the external power, so weak power line may explain some of the strange > behaviour. As for the charging code, do we even have anything even remotely resembling that ? ___ Zaurus-devel mailing list Zaurus-devel@lists.linuxtogo.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/zaurus-devel
Re: [Zaurus-devel] Zaurus CF tests -- ok
Hi! > After getting _good_ power supply, I was able to untar and rm ltp tree > 100 times so far. 2.6.38, ext3. (So metan no, I do not see any weird > ext3 problems). Hmm, I'm using original adapter, but who knows if it's okay to use... > Another strange thing is... I see lots of duplicated keystrokes -- > like type "pavel" but machine understands "paavel". But it only seems > to happen when I'm _not_ trying to debug it?! That seems to be side effect of machine under load (it has gpio keyboard). > ( > So... just because something needs 5V does not mean you should charge > it from USB. > > Yes, I'm talking about zaurus. I noticed that it crashed rather > quickly when connected to USB power. (For example in tar/rm test). > So I took multimeter, and there was 4.15..4.5V on USB :-(. > > With power from USB extension cable, it crashes in <5 minutes. It > seems to toggle charger a lot, as voltage on the cable is only > 4.2..4.5V. I guess it is software problem in the charging code. > ) The zaurus actually is AFAIK unable to run from battery when connected to the external power, so weak power line may explain some of the strange behaviour. -- metan ___ Zaurus-devel mailing list Zaurus-devel@lists.linuxtogo.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/zaurus-devel
[Zaurus-devel] Zaurus CF tests -- ok
Hi! After getting _good_ power supply, I was able to untar and rm ltp tree 100 times so far. 2.6.38, ext3. (So metan no, I do not see any weird ext3 problems). Another strange thing is... I see lots of duplicated keystrokes -- like type "pavel" but machine understands "paavel". But it only seems to happen when I'm _not_ trying to debug it?! ( So... just because something needs 5V does not mean you should charge it from USB. Yes, I'm talking about zaurus. I noticed that it crashed rather quickly when connected to USB power. (For example in tar/rm test). So I took multimeter, and there was 4.15..4.5V on USB :-(. With power from USB extension cable, it crashes in <5 minutes. It seems to toggle charger a lot, as voltage on the cable is only 4.2..4.5V. I guess it is software problem in the charging code. ) Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html ___ Zaurus-devel mailing list Zaurus-devel@lists.linuxtogo.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/zaurus-devel
