compiz team mailing list archive

[Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>]

One thing you can try is building the driver from git with debugging
enabled:

$ apt-get build-dep xserver-xorg-video-intel
$ git clone git://anongit.freedesktop.org/xorg/driver/xf86-video-intel
$ cd xf86-video-intel
$ ./autogen.sh --prefix=/usr --with-default-accel=sna --enable-debug
$ make && sudo make install

Restart X and you should have a line in your Xorg.log saying
"(II) intel(0): SNA compiled with assertions enabled"

See if that catches anything - if you get spontaneous restarts make sure
to attach the gdm.log in order to report the failed assertions.

-- 
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packagers, which is subscribed to compiz in Ubuntu.
https://bugs.launchpad.net/bugs/1116587

Title:
  Lenovo T400: With external monitor the system is rarely working for
  more than 10 minutes

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