Bug 96791

Summary: Screen flashes when changing brightness and screen flashes/tears on weston/wayland
Product: Drivers Reporter: Jeff Z (shakuganxxii)
Component: Video(DRI - Intel)Assignee: intel-gfx-bugs (intel-gfx-bugs)
Status: RESOLVED OBSOLETE    
Severity: normal CC: intel-gfx-bugs
Priority: P1    
Hardware: x86-64   
OS: Linux   
Kernel Version: 4.0.0 Subsystem:
Regression: No Bisected commit-id:
Attachments: my kernel configuration

Description Jeff Z 2015-04-17 13:17:35 UTC
Created attachment 174281 [details]
my kernel configuration

After updating to kernel 4.0.0, changing brightness via keyboard keys causes the screen to flash.
It not flashing black and white, but instead when the brightness is high, it flashes to a low brightness before changing back. When the brightness is low, it flashes to a high brightness before changing back.

Running weston causes parts of the screen to flash and tear black and white. The part that tears depends on where the mouse is; it usually tears everything under the mouse. 

This didn't happen on kernels 3.14 - 3.19

00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 12)
Comment 1 Jeff Z 2015-04-17 21:18:35 UTC
running xorg-server-1.16.4, mesa-10.3.7-r1, xf86-video-intel-2.99.917
Comment 2 Jeff Z 2015-04-17 21:19:00 UTC
running xorg-server-1.16.4, mesa-10.3.7-r1, xf86-video-intel-2.99.917
Comment 3 Jani Nikula 2015-10-07 10:11:54 UTC
We seem to have neglected this bug. Apologies.

If the problem persists with latest kernels, please file a bug at the freedesktop.org bugzilla [1], referencing this bug. Thank you.

[1] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel