Created attachment 91394 [details] /sys/class/drm/card0/error On kernel versions up until 3.12 I experienced frequent hangs of graphical output for a few seconds each, accompanied by this in dmesg: Jan 1 00:50:18 inti kernel: [drm] stuck on render ring Jan 1 00:50:18 inti kernel: [drm:i915_set_reset_status] *ERROR* render ring hung inside bo (0x4b68000 ctx 1) at 0x4b681c8 Jan 1 00:52:11 inti kernel: [drm] stuck on render ring Jan 1 00:52:11 inti kernel: [drm:i915_set_reset_status] *ERROR* render ring hung inside bo (0x5855000 ctx 1) at 0x58551c8 With a current kernel (yesterday's git HEAD, i.e. 3.13-rc6+) I now get this: Jan 1 18:09:37 inti kernel: [drm] stuck on render ring Jan 1 18:09:37 inti kernel: [drm] GPU crash dump saved to /sys/class/drm/card0/error Jan 1 18:09:37 inti kernel: [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. Jan 1 18:09:37 inti kernel: [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel Jan 1 18:09:37 inti kernel: [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. Jan 1 18:09:37 inti kernel: [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. Jan 1 18:09:37 inti kernel: [drm:i915_set_reset_status] *ERROR* render ring hung inside bo (0x138b4000 ctx 1) at 0x138b41c8 Jan 1 18:09:37 inti kernel: [drm:i915_set_reset_status] *ERROR* render ring hung flushing bo (0x139dc000 ctx 1) at 0x138b41c8 Jan 1 18:09:37 inti kernel: [drm:i915_context_is_banned] *ERROR* context hanging too fast, declaring banned! Hardware is a Lenovo T520, GPU is an "Intel HD Graphics 3000" according to Xorg.log. System is Debian Unstable/Experimental. GPU error trace is attached. Best regards, Jan
P.S.: Bootup shows this: [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [drm] Driver supports precise vblank timestamp query. [drm] Wrong MCH_SSKPD value: 0x16040307 [drm] This can cause pipe underruns and display issues. [drm] Please upgrade your BIOS to fix this. [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5 (There is no BIOS upgrade available.)
Pulled latest userland libGL (10.0.1) - bug appears to be fixed. Sorry for the noise.
This bug occurs a few seconds after window manager start. It does not causes a critial problems. But some applications that use OpenGL does not work properly or crashes on runtime.
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