Spoke too soon. After waking up from suspend witness a graphics bug(as before), not sure if this is related to this bug report. dmesg reveals:
[ 1700.310259] [drm] stuck on render ring [ 1700.311378] [drm] GPU HANG: ecode 0:0x84dffefc, in Xorg [1330], reason: Ring hung, action: reset [ 1700.311380] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [ 1700.311381] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [ 1700.311382] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [ 1700.311383] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [ 1700.311384] [drm] GPU crash dump saved to /sys/class/drm/card0/error [ 1702.309120] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off [ 1706.330906] [drm] stuck on render ring [ 1706.331979] [drm] GPU HANG: ecode 0:0x84dffefc, in Xorg [1330], reason: Ring hung, action: reset [ 1706.332053] [drm:i915_context_is_banned] *ERROR* gpu hanging too fast, banning! [ 1708.329919] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1432194 Title: Graphics unstable on Ubuntu 14.04 and 14.10 using Intel HD Graphics 5500 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1432194/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
