Public bug reported:
Hello,
I have a Compulab fit-PC2 running Ubuntu Jaunty, and its graphics chip
is the Intel GMA-500. I am using the Poulsbo driver (xserver-xorg-
video-psb 0.31.0-0ubuntu1~904um1 with psb-modules
4.41.1-0ubuntu1~904um1) from Launchpad's Ubuntu Mobile PPA site.
However, I keep running into troubles with Xorg (xserver-xorg
7.4~5ubuntu18), and now it seems more often than not that I keep seeing
Xorg spontaneously freeze. I assume that the crashes occur under heavy
loads (e.g. when compiling a program or frequently opening and closing
or switching windows). The display becomes frozen, but you can still
move the mouse pointer, and the machine is still remotely accessible via
SSH.
As you can tell in the attached file containing the strace output of
Xorg, the freeze begins when the ioctl() function starts repeatedly
returning -1 (EAGAIN, which means "Try again" or "Resource temporarily
unavailable"), and if I try to kill the Xorg server by calling 'sudo
kill -9 $(ps -C Xorg -o pid=)', the display becomes completely frozen
(i.e. you cannot move the mouse pointer as well) and the whole machine
freezes (as evidenced in an SSH connection on a remote machine where you
cannot kill the SSH client by pressing Ctrl+C or type anything in the
terminal). There is no indication in the logs that a kernel oops
related to this problem occurred.
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
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[GMA-500] Xorg spontaneously freezes (under heavy loads?) after a while
https://bugs.launchpad.net/bugs/393290
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