/srv/irclogs.ubuntu.com/2008/08/28/#ubuntu-kernel.txt

lukehasnonameHas anyone read "Understanding the Linux Kernel, 3e"?00:16
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lukehasnoname144 minuts without response02:40
lukehasnoname*minutes02:40
sorenI have.02:40
sorenWEll, most of it.02:40
lukehasnonameuseful?02:41
sorenErm... that's a lie actually. Glancing that the index, I've probably read about half.02:41
sorenVery.02:41
sorenI highly recommend it.02:41
lukehasnoname*goes to amazon*02:41
lukehasnonameI'm in a "intro to data communications" class; the students all have to install Ubuntu to a live CD. I had to explain to the teacher why there's a "duck" (heron) on the desktop. OH, and she's running FC6 for a server o_o02:42
pwnguinheh03:06
pwnguinmy uni LUG had an email asking for help with FC103:06
TheMuso/c05:39
shenki2.6.27-1-generic is rebooting upon resume for me :(08:12
shenkii was running an upstream .27-rc4, 1941246dd98089dd637f44d3bd4f6cc1c61aa9e4, and it resumes fine08:13
shenkiamd64, thinkpad x30008:13
shenkiany suggestions for how to collect logs would be welcome08:13
gaspahi, hardy-updates has virtualbox-ose-modules-2.6.24-20-generic, but not the associated kernel. is that only a glitch?11:06
aboganigaspa: VirtualBox maintainer error, i suppose.11:30
aboganiI think that he'll fix it soon with .2111:30
gaspaabogani: i meant : there's no project to put in -updates linux-image 2.6.24-20...11:31
gaspaif so, the solution is: just wait.11:31
aboganiNo .20 is supersede. We are just bumped to .22 into Hardy git archive... in any case wait seems the best option :-)11:35
gaspaabogani: ok, but -updates repositories are broken.11:37
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siretartcould someone please triage bug #261590? i feel that it is rather critical, but don't want to triage my own bugs14:16
pwnguinsiretart: you could try #ubuntu-laptop and their mailing list, but it's basically fallen apart14:24
pwnguin(there might be a thinkpad channel)14:25
mjg59siretart: Thinkpads don't export fans via acpi14:26
mjg59It's notabug14:26
mjg59There's a thermal issue on Thinkpads that's been fixed upstream14:27
pwnguinalternatively, just spam keywords till mjg notices14:27
siretartmjg59: err, did this change from hardy?14:30
mjg59siretart: No14:31
siretartmjg59: what is today's way of controlling fans on thinkpads?14:31
mjg59thinkpad-acpi will do it if you ask to it really hard14:31
siretartso no way of controlling it somehow interactively?14:32
mjg59Only using thinkpad-acpi14:33
siretartI thought of echo'ing stuff to /proc 14:33
siretartmjg59: with 'asking it really hard' do you mean the option 'fan_control=1'?14:34
mjg59siretart: Yeah14:41
shenkisiretart: the fun happens in /proc/acpi/ibm14:42
shenkisiretart: https://launchpad.net/tp-fan is handy too14:42
mjg59Bear in mind that the X60 handles high temperatures by slowing down the CPU in firmware14:43
mjg59That's what was broken at various points14:43
shenkimjg59: do you know what this message is about:14:44
shenki"thinkpad_acpi: setting the hotkey mask to 0x00ffffff is likely not the best way to go about it"14:44
mjg59Yes, with recent thinkpad_acpis userspace shouldn't be setting hotkey_mask14:45
shenkimjg59: where could that be getting set?14:48
mjg59/etc/modprobe.d somewhere?14:50
siretartmjg59: thanks for the information! I'll update the bug14:59
_MMA_Does this deserve a bug report? http://mma.users.ubuntustudio.org/vbox.png It's using the latest on-disk image -generic kernel.14:59
siretartshenki: that would be bug LP #25688715:00
shenkisiretart: thanks,i just found it myself too15:02
shenkistgraber: heh, we added the same comment. you bet me by 49 seconds.15:02
siretart:)15:02
tjaaltonshenki: it's hotkey-setup, I'll fix it15:05
mjg59Remember that just removing the file from the package won't fix it, since it's a conffile15:05
siretartshenki: TBH, I'm a bit hesitant to add a /etc/modprobe.d/thinkpad_acpi.modprobe. what happens if 2 files define options for the same module?15:05
shenkisiretart: mmm, hotkey setup would run after the modprobe, so it would over write modprobe's settings15:06
tjaaltonmjg59: it's echo'ed during init, so just removing that part should do, right?15:06
mjg59Yeah15:07
mjg59Oh, of course, it's part of the init script15:07
tjaaltonyep15:07
shenkithe docs suggest setting it to /sys/devices/platform/thinkpad_acpi/hotkey_recommended_mask15:08
siretartcat /sys/devices/platform/thinkpad_acpi/hotkey_recommended_mask > /sys/devices/platform/thinkpad_acpi/hotkey_mask15:08
shenkiindeed.15:09
siretartbut that's something the module could it itself. if it doesn't do that already15:09
shenkilater on, it talks about not messing with defaults for the backlight control when one has acpi video15:10
shenki"For Lenovo models *with* ACPI backlight control"15:10
shenkisiretart: have you attempted resuming from suspend with .27?15:12
siretartshenki: suspend works on my X60s, I haven't tried hibernate yet, though.15:12
siretartresume btw as well15:12
tjaaltonI wonder if that breaks my screen not resuming from powersave-mode15:13
tjaaltonwith .24 it's ok15:13
shenkimy x300 was rebooting (instead of resuming) with .27-1-generic, but resumes fine with upstream ~rc415:13
mjg59shenki: Known bug in ftrace15:14
shenkimjg59: thanks15:14
shenkiah, and there's the fix. ftrace: disable tracing for hibernation. cool15:17
mjg59There's another one for suspend to ram15:21
shenkinoticed that. figured i was talking to myself enough. don't need to correct myself too15:22
tjaaltonsiretart: I'v tried commenting out that stuff from the initscript, and now hotkey_mask is the same as hotkey_recommended_mask15:39
tjaaltonok, so my laptop screen really doesn't want to resume frome the powersaving mode15:40
tjaaltonintel15:40
tjaaltonneed to reboot to get it back15:40
siretarttjaalton: so let's claim that setting the hotkey mask was an quirk that is not necessary anymore with current thinkpad_acpi, and we should remove it completely from hotkey-setup15:41
tjaaltonsiretart: indeed15:41
siretarttjaalton: does your ThinkVantage button do something useful? It doesn't for me since (and including) hardy15:43
tjaaltonnope15:43
=== BenC changed the topic of #ubuntu-kernel to: Ubuntu kernel development discussion ONLY | Kernel Wiki: https://wiki.ubuntu.com/KernelTeam | Latest kernel upload: 2.6.27-2.3 (based on 2.6.27-rc4-git) | Latest news: Moved to 2.6.27 kernel for Intrepid/8.10. | Next meeting: Aug 27, 16:00 UTC | Kernel Team machine: http://kernel.ubuntu.com
=== BenC changed the topic of #ubuntu-kernel to: Ubuntu kernel development discussion ONLY | Kernel Wiki: https://wiki.ubuntu.com/KernelTeam | Latest kernel upload: 2.6.27-2.3 (based on 2.6.27-rc4-git) | Latest news: Moved to 2.6.27 kernel for Intrepid/8.10. | Next meeting: Sept 2, 16:00 UTC | Kernel Team machine: http://kernel.ubuntu.com
cjwatson2.6.27 seems to have cleared up the intermittent usplash misrenderings for me18:08
BenCcjwatson: ogasawara said the bug showed others claiming the same18:17
cjwatsonwl driver seems to work, though curiously b43 is still loaded18:26
BenCcjwatson: does jockey do anything to divert conflicting open/closed drivers?18:34
cjwatsonno idea18:39
cjwatsonwl is still closed from its point of view anyway18:39
cjwatsonit's in linux-restricted-modules and listed in the jockey UI18:39
BenCcjwatson: I notice alsa-utils 1.0.17 was uploaded18:47
BenCthat was fast18:47
cjwatsonyeah, Luke squeezed it in under the freeze last night18:48
cjwatsonsound still works for me at any rate18:48
BenCfreeze?18:49
CarlFK.27 - I now have both ath5k and ath_pci loaded at the same time, which I think is bad - should I file a bug in lp?19:22
BenCCarlFK: Disable ath_pci by either uninstalling linux-restricted-modules or using "Hardware Drivers" control panel19:26
* BenC => reboot19:28
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CarlFKis there some way to redirect kernel boot output to usb?  (laptop has no serial ports) 21:57
CarlFKbooting .27 - it pauses at various places, like right now at "[3.11...] SCSI subsystem initialized" - been there for over 1 min.  If I hit any key (spacebar) it will continue, then pause somewhere else.  22:03
CarlFKthis seems very odd.22:03
CarlFKdidn't touch it - crash - [174...] stack dump.  22:05
smb_tpCarlFK, Just a wild guess. Might try clocksource=jiffies (won't probably help with the crash, but there had been cases where it helped with pauses)22:25
CarlFKsmb_tp: http://dev.personnelware.com/carl/a/pics/P1010005.JPG  pic of screen with "BUG: soft lockup - CPU#1 stuck for 160s! [swapper:0]"22:35
CarlFKsmb_tp: guessing you are the smb that gave me http://people.ubuntu.com/~smb/bug254668 (same box, .27 kernel) 22:37
smb_tpCarlFK, Was that with the clocksource option or just the crash you mentrioned before22:37
smb_tpYes, I am22:37
CarlFKhi22:37
smb_tpHi22:37
CarlFKno clocksource22:37
smb_tpThat one looks like somewhere in the usb code22:37
CarlFKhere is it before the dump  http://dev.personnelware.com/carl/a/pics/P1010004.JPG22:38
CarlFKhttp://dev.personnelware.com/carl/a/pics/P1010003.JPG  same thing, better focus 22:39
smb_tpYeah somewhere setting up the usb controller. The crash place is a bit strange in delay(). Hm... 22:41
CarlFK http://dev.personnelware.com/carl/a/pics/P1010006.JPG "CPU1 stuck for 98s! [udevd:2033]"22:46
CarlFKlet me know if you want me to open a lp tickit and  post these 22:47
smb_tpCarlFK, Yes, I just have a quick look into the code. Could you probably try the clocksource option meanwhile22:48
smb_tp?22:48
CarlFKsure22:48
cjwatson18:48 <cjwatson> yeah, Luke squeezed it in under the freeze last night22:56
cjwatson18:49 <BenC> freeze?22:56
cjwatsonoops, Ben left already22:56
cjwatsonwas going to remind him of this little thing called feature freeze ;-)22:56
smb_tpcjwatson, Probably he just forgot it was so close. :)22:58
CarlFKsmb_tp: clocksource=jiffies - now it is stuck on "setting the system clock"23:01
CarlFKspace/enter/type - shows up on console, doesn't un-pause it.  power button, nothing.23:02
CarlFKhit the "special dvd" button (hp laptop thing) - console shows "[11.8...] atkbd.c: unknown key released..." so it isn't froze just stuck 23:04
smb_tpCarlFK, Very strange. Something somewhere in the timers region. I'd say file a bug for 2.6.27 and probably include dmidecode data so its clear what system this is. At the moment, does SYSRQ-t print something? 23:06
smb_tpCarlFK, Since the oops happened in delay_tsc you might also try "notsc" to see whether that changes things.23:12
CarlFKk - I rebooted, and this time is slightly different: http://dev.personnelware.com/carl/a/pics/P1010009.JPG23:14
CarlFKhitting sysrq puts ^\ on the screen23:14
CarlFKwhat is SYSRQ-t ?  (trying to cord it just does ^\t )23:15
smb_tpCarlFK, Alt+Print+t23:16
CarlFKoh great - it fixed itself 23:19
smb_tpCarlFK, Just by waiting or after another boot23:20
CarlFKanother boot - with clocksource=jiffies - which would hang till I power cycled it 23:21
smb_tpCarlFK, this really feels like timing/timer stuff. But I can't place it.23:23
CarlFKhmm - sudo apt-get upgrade "The following packages have been kept back:   hal libsmbios-bin ubuntu-minimal"23:23
CarlFKshould I install those?  23:24
smb_tpCarlFK, I don't think they have some impact that early but it might be better to have a clean installation23:25
smb_tpCarlFK, well probably hal might23:26
smb_tpCarlFK, In any case, you should probably try the "notsc" option (instead of clocksource) and create a bug so this documented23:28
smb_tpCarlFK, I have to leave now, sorry23:30
CarlFKno prob23:30
smb_tpCarlFK, I uploaded another kernel to debug the other problem (it will still hang but prints more). But I did not have time to run it here, so you might want to wait or try it23:31
CarlFKsmb_tp: bug report against .27 kernel ?23:32
smb_tpThe crash yes23:32
CarlFKill give it a shot - not like it will catch my box on fire :)23:32
smb_tpCarlFK, No rather more hanging :)23:32
CarlFKhuh - hitting Alt causes a register dump23:33
CarlFKyou better get going :)23:33
smb_tpCarlFK, Yeah, I better do... :)23:34
* smb_tp runs23:34

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