The crash is happening in mesa, so re-assigning. Could you please try obtaining a backtrace with libgl1-mesa-dri-dbg installed.
Thanks ** Changed in: mesa (Ubuntu) Sourcepackagename: xorg => mesa Importance: Undecided => Medium Status: New => Incomplete ** Summary changed: - SIGSEGV in X with kwin composite, intel 855GM + Xorg crashed with SIGSEGV in _swrast_copy_teximage2d [i855GM] -- Xorg crashed with SIGSEGV in _swrast_copy_teximage2d [i855GM] https://bugs.launchpad.net/bugs/287485 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