Public bug reported:
Binary package hint: linux-image
Since linux-image-2.6.28-7-generic my system often completely freezes:
- screen is completely frozen, even the mouse
- audio playback stops
- keyboard is unresponsive (numlock don't change the LED state)
- sysrq doesn't work
In /etc/sysctl.conf I have:
kernel.panic_on_oops = 1
kernel.panic = 10
but after the freeze the computer never reboots. I see nothing special in the
dmesg nor other logs.
The freeze occurs when computer is under heavy load, mostly CPU load (it is
happening almost exclusively when I run Eclipse and it starts resolving Ivy
dependencies between more than 100 projects; the same if I am resolving
dependencies and compiling all projects with ant script; this takes cca 10
minutes, and sometimes it finishes without freezing the computer). I also tried
cpustress utils and memtest86+, but no freeze occurred. I also watched CPU
temperature while doing that critical operations and all was in normal. With
the linux-image-2.6.28-6-generic (2.6.28-6.17) there are also no freezes.
My computer is IBM ThinkPad Z60m. I am running latest Kubuntu Jaunty
(updated 2009-03-06), using opensource ATI drivers (occurs regardless of
desktop effects on/off), ext4.
Please tell me what should I try to configure to get kernel dump after
crash.
Attaching relevant files. Thanks in advance.
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
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linux freezes completely since 2.6.28-7
https://bugs.launchpad.net/bugs/338645
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