I'm using Fedora 24 with kernel 4.7.5-200, GPU Intel Corporation HD Graphics 520 (rev 07). Today I've been forcefully logged out of my X session, and I've spotted this in the system logs: oct. 19 19:34:32 mob01772 kernel: [drm] stuck on render ring oct. 19 19:34:32 mob01772 kernel: [drm] GPU HANG: ecode 9:0:0x85dffffb, in Xorg [12939], reason: Engine(s) hung, action: reset oct. 19 19:34:32 mob01772 kernel: [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. oct. 19 19:34:32 mob01772 kernel: [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel oct. 19 19:34:32 mob01772 kernel: [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. oct. 19 19:34:32 mob01772 kernel: [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. oct. 19 19:34:32 mob01772 kernel: [drm] GPU crash dump saved to /sys/class/drm/card0/error oct. 19 19:34:32 mob01772 kernel: drm/i915: Resetting chip after gpu hang [...] oct. 19 19:34:34 mob01772 kernel: [drm] RC6 on oct. 19 19:34:44 mob01772 kernel: [drm] stuck on render ring oct. 19 19:34:44 mob01772 kernel: [drm] GPU HANG: ecode 9:0:0x85dffffb, in Xorg [12939], reason: Engine(s) hung, action: reset oct. 19 19:34:44 mob01772 kernel: drm/i915: Resetting chip after gpu hang FWIW, this happened right after starting an I/O intensive operation, which might be related to the hang.
Created attachment 127408 [details] journalctl -b output
Created attachment 127409 [details] /sys/class/drm/card0/error
We don't have enough information. - What Mesa version are you using? (glxinfo | grep Mesa) - What were you doing at the time of the hang? Is it reproducible?
Unfortunately, as I said, it's not reproducible. I don't really remember what I was doing, apart from the high I/O or swap pressure. $ glxinfo | grep Mesa client glx vendor string: Mesa Project and SGI Device: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) (0x1916) OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) OpenGL core profile version string: 4.3 (Core Profile) Mesa 12.0.3 OpenGL version string: 3.0 Mesa 12.0.3 OpenGL ES profile version string: OpenGL ES 3.1 Mesa 12.0.3
Okay, thanks. There's not really anything we can do if it's not reproducible. Let us know if you find a way to trigger it again.
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