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base repository: NixOS/nixpkgs
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Commits on Mar 7, 2019

  1. Release notes: switch to modesetting: mention backlight problem 

    (cherry picked from commit 500d615)
    @7c6f434c
    7c6f434c committed Mar 7, 2019
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  1. +4 −0 nixos/doc/manual/release-notes/rl-1903.xml
4 changes: 4 additions & 0 deletions nixos/doc/manual/release-notes/rl-1903.xml
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Original file line number Diff line number Diff line change
@@ -666,6 +666,10 @@
Some OpenCL and VA-API applications might also break
(Beignet seems to provide OpenCL support with
<literal>modesetting</literal> driver, too).
Kernel mode setting API does not support backlight control,
so <literal>xbacklight</literal> tool will not work;
backlight level can be controlled directly via <literal>/sys/</literal>
or with <literal>brightnessctl</literal>.
Users who need this functionality more than multi-output XRandR are advised
to add `intel` to `videoDrivers` and report an issue (or provide additional
details in an existing one)