i guys you will not believe this, but I think I might have managed to make this bug reproducible - an important step to getting it fixed.
So in figuring this out, I have produced the following in dmesg: [413848.321803] [drm:i915_gem_do_execbuffer] *ERROR* Failed to pin buffer 2 of 3, total 142737408 bytes: -28 [413848.321807] [drm:i915_gem_do_execbuffer] *ERROR* 1190 objects [7 pinned], 247103488 object bytes [114286592 pinned], 114286592/234881024 gtt bytes [413986.513053] [drm:i915_gem_do_execbuffer] *ERROR* Failed to pin buffer 2 of 3, total 142737408 bytes: -28 [413986.513062] [drm:i915_gem_do_execbuffer] *ERROR* 1035 objects [7 pinned], 248905728 object bytes [114286592 pinned], 114286592/234881024 gtt bytes [413995.665969] hda-intel: azx_get_response timeout, switching to polling mode: last cmd=0x302f2d00 [414070.404805] [drm:i915_gem_do_execbuffer] *ERROR* Failed to pin buffer 2 of 3, total 142737408 bytes: -28 [414070.404813] [drm:i915_gem_do_execbuffer] *ERROR* 1235 objects [7 pinned], 243036160 object bytes [114286592 pinned], 114286592/234881024 gtt bytes [414141.474950] [drm:i915_gem_do_execbuffer] *ERROR* Failed to pin buffer 2 of 3, total 142737408 bytes: -28 [414141.474959] [drm:i915_gem_do_execbuffer] *ERROR* 1097 objects [7 pinned], 247709696 object bytes [114286592 pinned], 114286592/234881024 gtt bytes [414225.840459] [drm:i915_gem_do_execbuffer] *ERROR* Failed to pin buffer 2 of 3, total 142737408 bytes: -28 [414225.840463] [drm:i915_gem_do_execbuffer] *ERROR* 1239 objects [7 pinned], 273108992 object bytes [114286592 pinned], 114286592/234881024 gtt bytes [414364.091314] [drm:i915_gem_do_execbuffer] *ERROR* Failed to pin buffer 2 of 3, total 142737408 bytes: -28 [414364.091318] [drm:i915_gem_do_execbuffer] *ERROR* 992 objects [7 pinned], 252297216 object bytes [114286592 pinned], 114286592/234881024 gtt bytes And the test case is to open a specific image in Firefox (does not happen in the gnome image viewer). I must have stumbled across several images that trigger this, and the following is a good example: http://danbooru.donmai.us/data/5dbfcaeb05aa8a46b0ca2e4ac50a4cde.png (WARNING: opening this link may crash X if you are affected by this problem - save your work before clicking on it!) Since I have basically just told the world how to crash my PC, I would now really like to get this defect marked as security threat and escalated via the appropriate channels. Does anyone know how to escalate a defect? -- [gm45] X crashes and restarts with *ERROR* Failed to pin buffer 4 of 17 https://bugs.launchpad.net/bugs/528432 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
