|Summary:||[SKL] display blacks for 2 seconds and dmesg says "*ERROR* CPU pipe B FIFO underrun"|
|Product:||DRI||Reporter:||Jiri Pirko <jiri>|
|Component:||DRM/Intel||Assignee:||Intel GFX Bugs mailing list <intel-gfx-bugs>|
|Status:||CLOSED FIXED||QA Contact:||Intel GFX Bugs mailing list <intel-gfx-bugs>|
|Priority:||medium||CC:||cedric, intel-gfx-bugs, spiderx|
|i915 platform:||SKL||i915 features:||display/watermark|
Description Jiri Pirko 2016-11-06 08:54:33 UTC
Created attachment 127796 [details] dmesg with debug output From time to time (once every 2 hours), during the work (key press??), display blacks for ~2seconds. After that, everything restores an is fine again. Once that happens, dmesg says: *ERROR* CPU pipe B FIFO underrun Dmesg with debug output is attached. Kernel: 4.8.4-200.fc24.x86_64 I tried to run intel-drm kernel but I was consistently getting "double free" error during boot-up.
Comment 1 Jani Saarinen 2016-12-09 10:03:38 UTC
Is this still issue?
Comment 2 Cedric M 2017-01-10 13:43:31 UTC
Seems very similar to 97264 (in my case, it's just happening much more frequently, maybe due to a greater count of pixels). If it's the same bug, yes, it's still present.
Comment 3 Jiri Pirko 2017-01-10 14:51:42 UTC
I don't see this issue anymore on 4.8.15-200.fc24.x86_64
Comment 4 Cedric M 2017-01-10 15:11:54 UTC
Lucky you ;) Still have the issue reported at 97264 on 4.10.0-041000rc3-generic
Comment 5 Jani Saarinen 2017-03-08 07:39:14 UTC
With latest changes on atomic/WM work can you still reproduce on drm-tip?
Comment 6 Cedric M 2017-03-08 11:42:14 UTC
Hey, I have been playing with drm-tip for an hour: so far so good! :) Thanks, Cedric
Comment 7 Jani Saarinen 2017-03-28 15:49:31 UTC
Cedric, any updates, good now?
Comment 8 Cedric M 2017-03-28 15:53:11 UTC
Yes, no blanking anymore ! :-) Didn't try any newer kernel since though. I guess that it's going to be merged in stock 4.12 ? Still get occasional lockups (mouse ultra slow to move/huge lag, everything else frozen), but I guess that it's not related to this bug. Thanks !
Comment 9 yann 2017-03-28 16:34:33 UTC
(In reply to Cedric M from comment #8) > Yes, no blanking anymore ! :-) > Didn't try any newer kernel since though. > I guess that it's going to be merged in stock 4.12 ? > > > Still get occasional lockups (mouse ultra slow to move/huge lag, everything > else frozen), but I guess that it's not related to this bug. > > Thanks ! Thanks for your feedback. Then closing as fixed