Bug 1409589

Summary:	Screen flickers after Fedora 25 installation
Product:	[Fedora] Fedora	Reporter:	pdimitrov
Component:	wayland	Assignee:	Adam Jackson <ajax>
Status:	CLOSED UPSTREAM	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	25	CC:	ajax
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-02-13 17:06:16 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description pdimitrov 2017-01-02 15:04:14 UTC

Description of problem:
After installing the KDE spin of Fedora 25, my screen keeps flickering which I suppose must be due to some conflict with the graphic card. My workstation is using Optimus NVIDIA optimus where I have currently disabled the NVIDIA card and keep only the integrated one:

$ lspci -nn | grep VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06)

As far as I know Wayland is now default with the release so any feedback on how to check for information from it or how to disable it are more than welcome.

How reproducible:
Flicker is also visible on Live-user run, only requirement is the specific hardware.

Actual results:
Screen keeps flashing with varying frequency although refresh rate and all graphic settings are default.

Expected results:
Screen redrawing should be seamless.

Additional info:
I am ready to provide you with any configuration info you may require.

Comment 1 pdimitrov 2017-02-13 17:06:16 UTC

It seems that the most recent updates on Fedora fix this issue. No flicker appears anymore.