Bug 115061

Summary:	sna/glamor will make screen tearing after quitting X on MacbookPro 11,4
Product:	Drivers	Reporter:	Shane Chen (ss1ha3tw)
Component:	Video(DRI - Intel)	Assignee:	intel-gfx-bugs (intel-gfx-bugs)
Status:	RESOLVED INVALID
Severity:	normal	CC:	intel-gfx-bugs
Priority:	P1
Hardware:	Intel
OS:	Linux
Kernel Version:	4.5	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	lspci -vv

Description Shane Chen 2016-03-21 13:04:41 UTC

I am using Archlinux with MacbookPro11,4.
After updating to kernel version 4.5 and setting X to use sna (which is Xorg's default) or glamor.
Quitting X will make screen tearing.
And I got got these kernel's error messages. 
[drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* uncleared fifo underrun on pipe A
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
But uxa will wont make screen tearing.
I can confirm that sna and glamor works perfect at 4.4.5.

Comment 1 Shane Chen 2016-03-21 13:08:16 UTC

Created attachment 210101 [details]
lspci -vv

Comment 2 Jani Nikula 2016-03-22 10:33:36 UTC

Please file new drm/i915 bugs at the freedesktop.org bugzilla:
https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel