Bug 21724 - Since upgrade to this kernel screen flickers when opening firefox
Summary: Since upgrade to this kernel screen flickers when opening firefox
Status: RESOLVED WORKSFORME
Alias: None
Product: Mageia
Classification: Unclassified
Component: RPM Packages (show other bugs)
Version: 6
Hardware: All Linux
Priority: Normal normal
Target Milestone: ---
Assignee: Kernel and Drivers maintainers
QA Contact:
URL:
Whiteboard:
Keywords:
: 21725 (view as bug list)
Depends on:
Blocks:
 
Reported: 2017-09-17 13:29 CEST by Leon Goldman
Modified: 2017-09-20 15:14 CEST (History)
2 users (show)

See Also:
Source RPM: kernel-4.9.50-1.mga6.src.rpm
CVE:
Status comment:

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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
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