The crash seems to happen in drm_intel_gem_bo_start_gtt_access(), judging from those stacktraces.
2010/7/14 Martin Vielsmaier <446...@bugs.launchpad.net>: > When the system is frozen it is enough to kill compiz to break the freeze. > I attached gdb to compiz while frozen, here is the stack: > (gdb) info stack > #0 0x00007fc45b2d2187 in ioctl () from /lib/libc.so.6 > #1 0x00007fc45891e84d in drm_intel_gem_bo_start_gtt_access () from > /lib/libdrm_intel.so.1 > #2 0x00007fc458d8d70f in ?? () from /usr/lib/dri/i965_dri.so > #3 0x00007fc45ba3d612 in glXSwapBuffers () from /usr/lib/mesa/libGL.so.1 > #4 0x0000000000413302 in eventLoop () > #5 0x000000000040d8e9 in main () > > A second time with some more debug symbols installed: > (gdb) info stack > #0 0x00007f2c27198187 in ioctl () from /lib/libc.so.6 > #1 0x00007f2c247e484d in drm_intel_gem_bo_start_gtt_access (bo=0x1ac6960, > write_enable=<value optimized out>) > at ../../intel/intel_bufmgr_gem.c:1145 > #2 0x00007f2c24c5370f in ?? () from /usr/lib/dri/i965_dri.so > #3 0x00007f2c27903116 in ?? () from /usr/lib/mesa/libGL.so.1 > #4 0x0000000000412afb in eventLoop () > #5 0x000000000040d8e9 in main () > > I also believe that this problem is closely linked to OpenGL activity. Before > I touch the brightness keys everything is fine. Compiz and glxgears run. When > I touched the brightness keys (sometimes I need to touch them more than one > time), compiz freezes. When I kill it via a SSH session and then start > glxgears it freezes too. > Attached gdb to frozen glxgears, stack: > (gdb) info stack > #0 0x00007ff3a3abf187 in ioctl () from /lib/libc.so.6 > #1 0x00007ff3a1c6c84d in drm_intel_gem_bo_start_gtt_access () from > /lib/libdrm_intel.so.1 > #2 0x00007ff3a20db70f in ?? () from /usr/lib/dri/i965_dri.so > #3 0x00007ff3a4560612 in glXSwapBuffers () from /usr/lib/mesa/libGL.so.1 > #4 0x000000000040339f in ?? () > #5 0x00007ff3a39ffc4d in __libc_start_main () from /lib/libc.so.6 > #6 0x00000000004018c9 in ?? () > #7 0x00007fff1b7b1d78 in ?? () > #8 0x000000000000001c in ?? () > #9 0x0000000000000001 in ?? () > #10 0x00007fff1b7b3645 in ?? () > #11 0x0000000000000000 in ?? () > > Second time: > (gdb) info stack > #0 0x00007f0027c5d187 in ioctl () from /lib/libc.so.6 > #1 0x00007f0025e0a84d in drm_intel_gem_bo_start_gtt_access (bo=0x25f8be0, > write_enable=<value optimized out>) > at ../../intel/intel_bufmgr_gem.c:1145 > #2 0x00007f002627970f in ?? () from /usr/lib/dri/i965_dri.so > #3 0x00007f00286fe612 in glXSwapBuffers () from /usr/lib/mesa/libGL.so.1 > #4 0x000000000040339f in ?? () > #5 0x00007f0027b9dc4d in __libc_start_main () from /lib/libc.so.6 > #6 0x00000000004018c9 in ?? () > #7 0x00007ffff7897138 in ?? () > #8 0x000000000000001c in ?? () > #9 0x0000000000000001 in ?? () > #10 0x00007ffff7897680 in ?? () > #11 0x0000000000000000 in ?? () > > Any ideas what could trigger the bug? (Note that when the brightness > keys were touched once, this bug persists. So I think that some register > on the graphics card is set wrong and from then on causes problems... Is > there a way to read them all at once to see what changes?) > > -- > [gm45] Adjusting Brightness in Acer Aspire Timelines causes system freeze in > 4810T and 5810T models > https://bugs.launchpad.net/bugs/446717 > You received this bug notification because you are a direct subscriber > of a duplicate bug. > -- [gm45] Adjusting Brightness in Acer Aspire Timelines causes system freeze in 4810T and 5810T models https://bugs.launchpad.net/bugs/446717 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
