Public bug reported:

Binary package hint: xserver-xorg-video-ati

Following the lead of Nick Bauermeister and at the suggestion of Bryce 
Harrington here: 
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/195051/comments/29
I'm starting a bug report specific to my ATI Radeon Mobility 9000 problems.

The basics:  I'm running Hardy, the latest updates as of the time of
writing this (2008/03/25), on an IBM ThinkPad T40 with an ATI Radeon
Mobility 9000.

Like other reports, X freezes with nothing working except for the mouse
cursor.  I can only break the freeze via SysRq REISUB (or waiting, more
on that in a minute).

Unlike other reports, I was able to reproduce the freeze by starting
Gnome Screensaver Preferences and switching to the "Braid" screensaver.
What's strange is that this freeze doesn't trigger the gdb--I have to
interrupt with Ctrl+C to run a backtrace.  I've also discovered that
this freeze will fix itself after some time (anywhere from 5 minutes to
an hour in my testing).  I managed to get a gdb run that consists of two
SIGPIPE broken pipes during login, a SIGPIPE running the actual Braid
screensaver, and multiple SIGINT Ctrl+C interrupts during the suspicious
freeze with mouse still working.  I ran backtrace full each time gdb
stopped, either on its own or from my interrupt.  The last four or five
backtraces are probably the ones of interest, all stemming from the
Braid screensaver,  subsequent freeze, and (after a long wait) recovery.

Note:  Unlike Nick Bauermeister's bug report at
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/195051 I'm not seeing an error in drmCommandWrite()

Hope this helps.

** Affects: xserver-xorg-video-ati (Ubuntu)
     Importance: Undecided
         Status: New

-- 
X server freezes (except for mouse) with Compiz enabled on ATI Radeon Mobility 
9000
https://bugs.launchpad.net/bugs/206845
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