Bug 21724

Summary:	Since upgrade to this kernel screen flickers when opening firefox
Product:	Mageia	Reporter:	Leon Goldman <leon244>
Component:	RPM Packages	Assignee:	Kernel and Drivers maintainers <kernel>
Status:	RESOLVED WORKSFORME	QA Contact:
Severity:	normal
Priority:	Normal	CC:	marja11, tmb
Version:	6
Target Milestone:	---
Hardware:	All
OS:	Linux
Whiteboard:
Source RPM:	kernel-4.9.50-1.mga6.src.rpm	CVE:
Status comment:

Description Leon Goldman 2017-09-17 13:29:39 CEST

Description of problem:


Since upgrade to kernel 4.9.50-1.mga6 I find my screen flickers badly when I open Firefox with another app such as Thunderbird. I have dual screens with the primary screen on the left. The flickering stops if Firefox is moved to the primary screen and I close Thunderbird, or for that matter any other application. Or, I need close firefox. This also happens with any other app that I open with Firefox already open (Dolphin, System Settings, Gimp, etc.)
This did not happen with kernel-4.9.43-1


How reproducible:Happens every time. This happened once before with a kernel update and then stopped with the next kernel update


Steps to Reproduce:
1.open firefox (it opens on the right screen and I get severe flickering/\
2.Move to left screen and flickering stops
3.Open Thunderbird and it starts to flicker on both screens

Comment 1 Marja Van Waes 2017-09-17 13:34:15 CEST

*** Bug 21725 has been marked as a duplicate of this bug. ***

Marja Van Waes 2017-09-17 13:34:43 CEST

CC: (none) => marja11
Assignee: bugsquad => kernel
Version: 5 => 6

Comment 2 Thomas Backlund 2017-09-18 22:16:13 CEST

what hw / gpu ?

free driver or proprietary ?

CC: (none) => tmb

Comment 3 Leon Goldman 2017-09-19 15:24:23 CEST

NVidia, Proprietary driver


Card:  NVidia ‎GF100 [GeForce GTX 470]
Module: NVIDIA GeForce 420 series and later
NVIDIA Driver Version:384.59

Two monitors: Samsung S22B300 (primary monitor)
              Samsung SyncMaster  226BW

Xserver information:
  Server Version: 11.0
  Server Vendor:  Mageia
  Vendor Version: 11903000

Comment 4 Leon Goldman 2017-09-20 15:14:13 CEST

As of 20/9/2017 issue has stopped. I rebooted into kernel 4.9.43 for a few days and then booted back into 4.9.50 and I no longer have the issue. I have no idea what the problem was or why it stopped.

Status: NEW => RESOLVED
Resolution: (none) => WORKSFORME