21

I have been bothered by this issue for few weeks already. The problem started when I upgraded to 14.04. Parts of my screen are sometimes flickering like shown on 2 videos that links I attach below:

https://www.youtube.com/watch?v=FAg2uGABXQo

https://www.youtube.com/watch?v=ANgAl28P-YE

I was trying to record it with VLC but suddenly when I start recording then ... it stops flickering :)

I have no idea where can I file a bug for this and which package it may be connected with. Please comment with what it may be connected with and how can I resolve this.

I will post any relevant information regarding the packages if need be.

I use nvidia-334 from xorg edgers package ( 334.21-0ubuntu1~xedgers14.04.1 ) but I have also tried others and it's the same issue.

Patryk
  • 9,416

5 Answers5

14

This worked for me: http://ubuntuforums.org/showthread.php?t=2243912

Enable Force full screen redraws on repaint option in Workarounds

I had random flickering similar to this (eg. part of webpage flickered in Firefox (hardware acceleration = on), or desktop icon flickered when deselecting it) and this seemed to fixed this issue.

I'm using Nvidia drivers 340.58, Lenovo Y500 GT 750m (single, no optimus, IntelHD disabled).

Lindza
  • 156
6

It's a bug in Compiz. If it affects you then you should go here and click on "this bug affects me".

There is a workaround but it can make the system a little bit slower.

Install CompizConfig Settings Manager, then go to Composite and disable Unredirect fullscreen windows.

nastys
  • 5,427
6

I have installed nvidia-331 (331.38-0ubuntu7) drivers and for few days now I have not experienced any flickering so probably it was a problem with the drivers (xorg-egders version 334 or recent 337 )

Patryk
  • 9,416
4

Full instructions based on the other answers here:

  • Install Compiz Config, from a terminal, type:

    sudo apt-get install compizconfig-settings-manager

  • From the launcher, execute CompizConfig Settings Manager

  • Check the checkbox in "Utility -> Workarounds -> Force full screen redraws (buffer swap) on repaint"

It also worked for me, I have a Dell XPS laptop with a Nvidia GT 525m, using Ubuntu 14.04.

tiangolo
  • 866
-1

I had a very similar issue with 2 GTX 680s in SLI and latest NVIDIA drivers on a fresh ubuntu install in RAID-0. I remembered before Nvidia drivers the screen was very solid and stable with nouveau drivers.

But after Nvidia drivers things happen to mess up.. and screen started to flicker. I remembered selecting a step in Nvidia installer to let the installer generate xorgs.conf file.

I renamed the xorg.conf to xorg.conf.bad-nvidia now things are up and beautiful. Just you dont need that xorgs.conf created by screwed up nvidia installers.

Seth
  • 59,332
Frustrated Nvidia user
  • 11