This is also happening for me since I upgraded my HP dc5750 PC to Ubuntu 10.04. The desktop runs fine for a few days, then I start seeing odd "static" in windows, including lots of horizontal lines in parts of Firefox windows, plus sometimes, garbled fonts in some firefox windows. Then without warning the window manager goes away, leaving me a bunch of undecorated windows.
I eventually figured out (by comparing ps listings before and after) that when that happens, compiz died. When I'm in that state (as my desktop is right now as I type this), I can run compiz from a terminal window, and it reports: WARNING: Application calling GLX 1.3 function "glXCreatePixmap" when GLX 1.3 is not supported! This is an application bug! drmRadeonCmdBuffer: -12. Kernel failed to parse or rejected command stream. See dmesg for more info. [1]+ Exit 244 /usr/bin/compiz and almost immediately terminates. (It starts to decorate windows, etc, then it all gets torn down again.) dmesg reports: [356951.921231] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation -12! a few times when that happens. It's not clear whether compiz is building a parameter to drm wrongly, or whether drm is wrongly rejecting a valid parameter from compiz. But what IS clear is that restarting compiz once the system gets into this state doesn't do any good. However, logging out (using the menu item at the upper right corner of the screen) and logging back in DOES eliminate the problem (for a few days). And a power cycle also eliminates it. What further info can we get you to help debug it? It happens pretty regularly, and when it does, I can usually type into a terminal and/or a web browser, so there's lots that could be done. (Sometimes it refuses to change the input focus while in this state; I haven't figured out why or how to work around that.) -- compiz exits with radeon error https://bugs.launchpad.net/bugs/550850 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
