Sorry, I see you did do backtrace full - great. So you just need the debug symbols installed. drmCommandWrite() is already a useful hint - evidently this has something to do with libdrm?
** Summary changed: - X freezes when Compiz is enabled on ATI Radeon Mobility 9600 + X freezes in drmCommandWrite() when Compiz is enabled on ATI Radeon Mobility 9600 ** Description changed: Binary package hint: xserver-xorg-video-ati I'm starting this new report on behalf of what Bryce Harrington said here: https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video- ati/+bug/108527/comments/143 OK, first things first: What happens? X freezes on my Thinkpad T42 with an ATI Radeon Mobility 9600 when running Compiz. There are no problems at all when Compiz is disabled. This problem started with Gutsy and persists with an up-to-date version of Hardy Alpha5 Also: I have a Radeon 9600XT on my main machine which has no problems whatsoever with running Compiz on Gutsy – that's why I think this is a problem with Mobility chips. What are the symptoms? I can run Ubuntu with Compiz fine for some minutes. Then all of a sudden the fan kicks in and X just freezes. What works? Only the movement of the mouse cursor. Restarting the system via SysRq REISUB What does not work? Everything else. I can't even restart X via [Ctrl]+[Alt]+[Backspace] or log into a console via [Ctrl]+[Alt]+[F1] Infos. I followed the steps in https://wiki.ubuntu.com/DebuggingXorg so I'm adding that output here. X froze prior to the backtrace. I'm also attaching Xorg.0.log, Xorg.0.log.old and the output of lspci -vvnn _right after the crash_ (recieved via ssh) as well as the xorg.conf + + [Note] + For anyone else seeing freezes, please collect a backtrace and check if you are also failing in drmCommandWrite(). If not, you may be seeing an unrelated issue, so please file a separate bug. -- bryce -- X freezes in drmCommandWrite() when Compiz is enabled on ATI Radeon Mobility 9600 https://bugs.launchpad.net/bugs/195051 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
