[Bug 1667001] Re: [amd] screen-unblanking seems to flicker backlight on/off 8 times before display resumes

[Daniel van Vugt]

That warning might indeed correlate with some flicker:

[2017-02-23 16:18:58.483124] <WARNING> mesa-kms: drmModeCrtcSetGamma
failed: Invalid argument

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Title:
  [amd] screen-unblanking seems to flicker backlight on/off 8 times
  before display resumes

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