/srv/irclogs.ubuntu.com/2006/10/20/#ubuntu-kernel.txt

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Administrator2.6.17-10.33 kernel panics08:56
Administratorat least the current one of that version in edgy, is that a known bug?08:57
infinityAdministrator: You might have to be a bit more specific.09:57
Administratorinfinity, ill report more detailed error in a min or 5/10.10:01
Administratorinfinity, kernel panic not syncing: attempted to kill init kernel_thread helper| above the ther error messg |  process swapper and kernel trehad helper i running 2.6.17-10 generic10:21
AdministratorI can debug further, i do not have a serial console or whatsoever..10:27
infinityIf you can take a picture of the panic, perhaps?10:28
infinityI have to run, but Ill be back in 20/30.10:28
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Administratorinfinity, you there?11:54
Administratori can send you ...11:54
Administratorthrough mail or dcc ...11:54
infinityadconrad@ubuntu.com11:58
infinityThough, once we determine that it's a bug, and in what package, I'd prefer if you file a bug and attach the image. :)11:58
Administratori am a bit bussy today, i'll mail you the images asap and at the end of the day i'll file the bug if things calm down a bit.12:05
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Traewhat package is mkinitrd in?03:08
makxyou update-initramfs from initramfs-tools03:09
infinitymkinitrd is well and truley obsolete.03:09
makxyes bug on ftp.debian.org is placed, it will soon be gone03:10
TraeA friend of mine was trying to help me get a fresh kernel compiled03:10
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Traehe doesn't run Ubuntu though, he runs Gentoo03:10
zul_different ways of working but we dont use mkinitrd as infinity said03:12
TraeI'm in /usr/src/linux (it's a symlink to /usr/src/linux-2.6.18.1   I've already done make && make install && make modules_install  and edited grub.  03:13
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TraeI got a kernel panic though when It tried to boot03:14
TraeCannot open root device hda103:14
Traeit says put in a valid root= thingy03:14
Traeheh03:14
zul_Trae: check the wiki there is documentation on how to compile a kernel03:14
makxwhy do you want a hand build kernel?03:14
Traemakx: you haven't seen me whinging in here aboutthe laptop overheat bug? :)03:15
Traemakx: hehe03:15
TraeI'm a graphic designer, dealing with this kernel stuff is way over my head sadly.03:16
makxhehe is not a reason :-P03:16
Trae:P03:16
Traeso here is the odd thing03:16
makxyes so use the provided linux images03:16
Traeoh let me find the bug03:16
Traehttps://launchpad.net/bugs/2233603:16
Traecheck this out... I was able to compile the kernel for like an hour without the laptop overheating or rebooting03:17
Traeyet 4 mins of playing a Youtube video, and the thing shuts down on me!?03:17
makxhmm mjg59 is not around he is the local acpi guru03:18
makxTrae what release are you using?03:18
TraeDapper Drake03:19
makxdid you try the Edgy release candidate - the live cd?03:19
TraeI tried beta03:20
Traehmm03:20
makxand?03:20
Traeno haven't tried the RC03:20
Traethe Beta had the sameproblem.03:20
TraeI will try the RC though03:20
Traeand of course use the Final03:20
makxbeurk03:21
makxhmm if i were you i'll wait for the acpi master to show up03:21
infinityTrae: Laptop overheating bug?03:22
Traeinfinity: https://launchpad.net/bugs/2233603:22
infinityOkay, this is sad to admit, but I suffer from this bug, and just "cope".03:27
infinityI'll get my laptop in front of BenC and mjg59 in Mountain View, and see if the three of us can nail it down.03:27
infinityIt actually seems to be bad hardware design mixed with slow response times on throttling.03:28
thommjg59's not gonna be there afaik :(03:28
Traelike clockwork03:28
infinity(The bad hardware design in my case being that the video RAM is WAY too close to the CPU, and when I overheat in a split second, the video corrupts and the machine crashes)03:29
Trae4mins into the youtube video and kerpow03:29
Traeheh03:29
infinitythom: Oh, well, BenC and I can deal then.03:29
Traeinfinity: really you have this too? 03:29
Traeinfinity: you a kernel developer?03:29
Traeinfinity: w00p!03:29
Traewish I was going to be in Mtn View too.03:30
Traeinfinity: whoa,that's quite insightful03:30
Traere: ram being too close03:30
Traeinfinity: I will volunteer to help you do whatever you need on this laptop.  Even give youguys ssh access if need be03:31
zul_infinity: ill be there as well03:31
Traeinfinity: traemccombs {at} gmail d o t com03:31
Trae:)03:31
TraeI'll try and lurk here in case you might need me.03:31
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TraeKeybuk: morning!03:35
Trae:)03:35
Keybukheyhey03:35
TraeKeybuk: infinity says he suffers from the same bug!03:35
Keybukoh, that's cool03:35
TraeKeybuk: and is going to work with BenC in Mtn. View03:35
TraeKeybuk: sucky for him, good for us hopefully.03:36
zulargh...who the hell puts their log files in html03:36
infinityMSN messenger?03:37
zulno exceed on demand03:37
infinityTrae: I can't say if it's the *same* bug, as the variables (CPU type, drivers involved as a result, etc) are pretty different, but the end effect is certainly the same (rapid rise in temperature, throttling and/or cooling not kicking in fast enough to cope)03:40
infinityTrae: So, it could be an underlying timing bug that lives a bit higher up the stack than the individal CPU power drivers.03:41
infinityTrae: Anyhow, I don't have any time (or the knowlege of that part of the codebase) to look at it in the next week, so there's no hope of it making edgy, but maybe we'll work up some patches for you to test a few weeks after release.03:41
Traeinfinity: no worries, as always, triple my money back if I'm not 100% satisfied :)04:01
tuxmaniacHi All.04:02
tuxmaniacMy Card reader on my Compaq laptop not working since I updated to the 2.6.17 series04:03
tuxmaniacIt worked in the Dapper kernel versions04:03
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KeybukBenC: around?05:11
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BenCKeybuk: yeah06:20
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KeybukBenC: have been trying to trace the reboot() syscall to find out whether the kernel actually calls sync() before powering down or not06:26
Keybukbut not having much luck06:26
BenCKeybuk: I don't know for sure, but I do know that I see scsi disk sync messages on reboot on power down06:27
BenCfilesystems should sync on umount (or remount ro)06:28
mjg59infinity: On your Thinkpad?06:28
BenCand I think the block layer handles hw level syncs for any devices with dirty cache06:28
infinitymjg59: Yeah.06:28
infinitymjg59: I can blow it up pretty spectacularly.06:28
infinitymjg59: It *seems* to be heat/throttle related, but given that the same sort of things that generate heat also do other evil things to one's system, I can't be completely sure.06:29
mjg59infinity: Entirely not Linux's problem06:31
infinityWell, in the words of the bug submitter, "I can't reproduce this in Windows".06:31
mjg59As far as I can tell, at least. Is it really getting to more than 91 degrees?06:31
mjg59When I say "not Linux's problem", I mean "The hardware may be making assumptions that are not guaranteed"06:32
mjg59Thinkpads don't have any OS-level fan control06:32
mjg59And they're not supposed to throttle until 90 degrees CPU temp or so06:32
infinityYeah, I've been curious about that.06:32
infinityFan usage patterns seem drastically different in Win32 and Linux, but I'd swear the kernel does no fan control.06:32
infinitySo I have no idea WTF is up with that.06:33
mjg59If you have no /proc/acpi/fan/*, the kernel does no fan control06:33
infinityI do not. :)06:33
mjg59For whatever reason, Windows probably drives the hardware in such a way that it generates less heat06:33
infinityThe only time the fan on this EVER spins into vacuum mode is on POST.  Which is worrying.06:34
infinity(In Windows, it'll vacuum every once in a while on its own)06:34
mjg59The processor is probably never getting hot enough to trigger it06:34
KeybukBenC: hmm, I'm trying to determine whether the "sync(); sleep(2)" is necessary in /sbin/reboot06:49
Keybukwe already know that ifdown'ing the interfaces and putting the drives to standby is unnecessary06:49
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BenCKeybuk: Probably not necessary, but "better safe than sorry"07:49
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