Created attachment 122223 [details] /sys/class/drm/card0/error Running current Arch Linux with Linux 4.1.18-1-lts #1 SMP Tue Feb 16 20:17:57 CET 2016 x86_64 GNU/Linux xf86-video-intel package version 1:2.99.917+560+gd167280-1 Kernel log snippet: [drm] stuck on render ring [drm] GPU HANG: ecode 8:0:0x85dffffb, in Xorg [785], reason: Ring hung, action: reset [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [drm] GPU crash dump saved to /sys/class/drm/card0/error drm/i915: Resetting chip after gpu hang [drm] stuck on render ring [drm] GPU HANG: ecode 8:0:0x85dffffb, in Xorg [785], reason: Ring hung, action: reset [drm:i915_set_reset_status [i915]] *ERROR* gpu hanging too fast, banning! drm/i915: Resetting chip after gpu hang i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment Content of /sys/class/drm/card0/error has been attached to this bug. The GUI freezes for several seconds and resumes operation with limited graphical performance until a full reboot. The crashes occur on every boot after some minutes of normal operation.
First suspect here is DMAR, try intel_iommu=igfx_off.
For both bugs: - Hung happening on "render" ring, - Application is "Xorg", - HW/PCI_ID is "0x1616", - Instruction/IPETH is "0x7a000004" *** This bug has been marked as a duplicate of bug 94780 ***
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