Bug 95214

Summary:	Flickering after logoff kernel 4.5
Product:	DRI	Reporter:	Gianluca Pettinello <g_pet>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	CLOSED INVALID	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	normal
Priority:	medium	CC:	intel-gfx-bugs, pinguin255
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Gianluca Pettinello 2016-04-30 16:46:06 UTC

With update to kernel 4.5 when I log off my desktop environment (xfce) and I go to Lightdm, the screen flickers.
Reverting to kernel 4.4.8 solves the issue. To my knowledge the acpi management has been rewritten in kernel 4.5.x.
So I suspect that there is an interaction between intel driver and the new kernel.
OS: Archlinux
Kernel: 4.5.1
Driver xf86-video-intel-git 2.99.917.640.gbca4e0e-1

Thanks in advance
Gianluca

Comment 1 Jani Nikula 2016-05-02 08:29:30 UTC

Please add drm.debug=14 module parameter and attach dmesg from boot to the problem.

Comment 2 Jani Nikula 2016-06-16 14:29:10 UTC

Timeout, closing. Too little information.

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