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Bug#647741: linux-image-3.0.0-2-amd64: UI sometimes freezes for several seconds, with a disk access


On 2011-11-05 17:19:01 -0500, Jonathan Nieder wrote:
> Thanks.  Are you low on swap?

No, and I've even plenty physical RAM free (my machine has 4 GB
memory and I use less than 2 GB), and htop says about 76 over
9695 MB swap used.

> Does dmesg say anything interest when this happens?

No, the only dmesg messages I get after the boot are

  dell_wmi: Received unknown WMI event (0x11)

and according to /var/log/kern.log, then don't occur at the same time.

> Does alt-sysrq + t (after echo-ing 1 to /proc/sys/kernel/sysrq to
> avoid the paranoid check) say anything interesting?

Nothing happens.

> If nothing along those lines help, can you bisect (e.g.,
> starting by trying 2.6.39 for a while)?

OK, I'm going to try that (I have 2.6.39-1, 2.6.39-2 and 3.0.0-1 also

When the problem occurs, the mouse can still move and I can switch
the desktop with the window manager (fvwm). But applications like
xterm and iceweasel are frozen (e.g. typing in xterm has no effect
until the disk is no longer accessed).

Vincent Lefèvre <vincent@vinc17.net> - Web: <http://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Arénaire project (LIP, ENS-Lyon)

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