Created attachment 113805 [details] Gzipped copy of /sys/class/drm/card0/error HW is Lenovo X1 Carbon Gen3. 00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09) When resuming from suspend, desktop hangs briefly. After opening chrome, the entire chrome window is black, and the following message shows up in dmesg: ``` [ 1535.764464] [drm] stuck on render ring [ 1535.765259] [drm] GPU HANG: ecode 0:0xc625c605, in Xorg [1471], reason: Ring hung, action: reset [ 1535.765260] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace. [ 1535.765260] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [ 1535.765261] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue. [ 1535.765261] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it. [ 1535.765262] [drm] GPU crash dump saved to /sys/class/drm/card0/error [ 1554.764090] [drm] stuck on render ring [ 1554.764932] [drm] GPU HANG: ecode 0:0x541fa382, in chrome [8525], reason: Ring hung, action: reset [ 1560.743786] [drm] stuck on render ring [ 1560.746022] [drm] GPU HANG: ecode 0:0x541fa382, in chrome [8525], reason: Ring hung, action: reset [ 1612.775561] [drm] stuck on render ring [ 1612.777810] [drm] GPU HANG: ecode 0:0xa0cf2c0c, reason: Ring hung, action: reset ``` Gzipped error from /sys/class/drm/card0/error attached, as requested.
$ uname -a Linux artoo 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Created attachment 113806 [details] intel_reg_dumper output after hang
Updated to new kernel and had identical symptom with a similar log message: $ uname -a Linux artoo 3.16.0-31-generic #41~14.04.1-Ubuntu SMP Wed Feb 11 19:30:13 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux $ dmesg [ 9545.493792] [drm] stuck on render ring [ 9545.494497] [drm] GPU HANG: ecode 0:0x00092929, in Xorg [1407], reason: Ring hung, action: reset [ 9547.495093] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
Upgraded kernel again, this time to the intel-drm-next tag on 3.18: $ uname -a Linux artoo 3.18.0-997-generic #201412200341 SMP Sat Dec 20 03:42:55 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Issue still occurs after resume from suspend: $ dmesg [32420.465811] [drm] stuck on render ring [32420.466721] [drm] GPU HANG: ecode 8:0:0xfffffffe, in Xorg [1537], reason: Rin g hung, action: reset [32420.466722] [drm] GPU hangs can indicate a bug anywhere in the entire gfx sta ck, including userspace. [32420.466722] [drm] Please file a _new_ bug report on bugs.freedesktop.org agai nst DRI -> DRM/Intel [32420.466723] [drm] drm/i915 developers can then reassign to the right componen t if it's not a kernel issue. [32420.466724] [drm] The gpu crash dump is required to analyze gpu hangs, so ple ase always attach it. [32420.466724] [drm] GPU crash dump saved to /sys/class/drm/card0/error [32420.473835] drm/i915: Resetting chip after gpu hang
Issue has not reoccurred since kernel 4.3.0-040300rc5-generic.
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