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backend/drm: add WLR_DRM_NO_ATOMIC_GAMMA env variable

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This allows the legacy interface to be used instead of atomic if needed. This
is a workaround to make some Intel GPUs work (if this variable is unset) as
well as to make some AMD GPUs work (if this variable is set).
This commit is contained in:
emersion 2018-10-28 23:43:21 +01:00
parent 659d39baaa
commit 443a38bd3f
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2 changed files with 8 additions and 4 deletions
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docs/env_vars.md
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@ -7,6 +7,8 @@ wlroots specific
considered the primary DRM device.
* *WLR_DRM_NO_ATOMIC*: set to 1 to use legacy DRM interface instead of atomic
mode setting
* *WLR_DRM_NO_ATOMIC_GAMMA*: set to 1 to use legacy DRM interface for gamma
control instead of the atomic interface
* *WLR_LIBINPUT_NO_DEVICES*: set to 1 to not fail without any input devices
* *WLR_BACKENDS*: comma-separated list of backends to use (available backends:
wayland, x11, headless)