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Every few seconds the entire screen flickers. This began after updates over the weekend (30-31 August). The machine is a Toshiba Satellite P200D, 2GB, AMD Turion 64X2 running Xubuntu 14.04.

Things I've tried:

  • Restart and cold start.
  • Display compositing ON or OFF makes no difference.
  • Screen refresh is 60 Hz, I get no alternatives to this on the pull down.
    (Note: If I set resolution to any non-native size screen refresh sets itself to 59.8 Hz.)
  • After reading forums I tried installing compton and typing compton --vsync opengl. No effect.
Eliah Kagan
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Royston
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    I've now tried rolling back from kernel 3.13.0-35 to 3.13.0-34 and the flicker goes away. Under that kernel the refresh rate is shown as 76 Hz for the native screen resolution. But I can't stick with this kernel as many other things don't work. – Royston Sep 04 '14 at 12:26
  • Re-installed 14.04 and the flicker stopped. After some hours I accepted the system updates and the flicker came back. Is there a strategy for quickly finding the culprit update? There were ~300 in all. – Royston Sep 05 '14 at 14:17
  • Looks like the kernel is the culprit. Avoid 3.13.0-35, either by not updating, making 3.13.0-34 default or using the mainline kernel PPA to upgrade to 3.14+. – Javier Rivera Sep 16 '14 at 06:35
  • if you have a dedicated graphics driver then remove that driver, and use generic one – Alex Jones Nov 21 '14 at 16:20

0 Answers0