Bug#524340: Reproducible GUI lockups
J.H.M. Dassen (Ray) wrote:
> Package: xserver-xorg-video-intel
> Version: 2:2.7.0-1
> Severity: important
>
> What am I trying to do:
> Use the GUI.
>
> How am I trying to do it:
> Log in through xdm into a GNOME environment with compiz set up
>
> What behaviour did I expect:
> GUI to be responsive
>
> What behaviour did I get:
> * After a short while, the GUI environment ceases to be responsive except
> for the mouse cursor.
> * The effect is (almost) immediate when switching desktop through
> ctrl-alt-right.
> * When I run with compiz replaced by metacity, the lockups also occur after
> a while.
>
> Notes:
> * This behaviour seems to have started when the system was updated to an
> xserver-xorg-video-intel package that requires libdrm, a week or two ago.
> Before that, the GUI was working reliably.
> * The system as a whole can still be used remotely.
> * Switching to virtual terminals through ctrl-alt-Fn or through "chvt" is
> sometimes possible after the lockup occurs, sometimes not.
> * I've tried to capture an application core dump of the X server:
> # sudo gcore 6759
> [sudo] password for ray:
> (no debugging symbols found)
> (no debugging symbols found)
> [Thread debugging using libthread_db enabled]
> [New Thread 0x7f2b91518790 (LWP 6759)]
> 0x00007f2b8f05b0b7 in ioctl () from /lib/libc.so.6
> warning: Memory read failed for corefile section, 1048576 bytes at
> 0x00007f2b7b3b5000.
> at which point the system hung completely, was no longer responsive to
> magic sysrq and needed to be reset.
>
> Please let me know, should additional information or testing be needed.
>
Does the problem occur without Compiz?
Note that if the machine locks up, gdb is useless.
Brice
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