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wlroots/docs/env_vars.md

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Document env vars used by wlroots
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wlroots reads these environment variables
wlroots specific
----------------
backend: allow multiple backends in WLR_BACKENDS
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* *WLR_DRM_DEVICES*: specifies the DRM devices (as a colon separated list)
instead of auto probing them. The first existing device in this list is
considered the primary DRM device.
* *WLR_DRM_NO_ATOMIC*: set to 1 to use legacy DRM interface instead of atomic
mode setting
backend/drm: add WLR_DRM_NO_ATOMIC_GAMMA env variable 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).
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* *WLR_DRM_NO_ATOMIC_GAMMA*: set to 1 to use legacy DRM interface for gamma
control instead of the atomic interface
Document env vars used by wlroots
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* *WLR_LIBINPUT_NO_DEVICES*: set to 1 to not fail without any input devices
backend: allow multiple backends in WLR_BACKENDS
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* *WLR_BACKENDS*: comma-separated list of backends to use (available backends:
Introduce noop backend The noop backend is similar to headless, but it doesn't contain a renderer. It can be used as a place to stash views for when there's no physical outputs connected.
2019-01-17 10:13:55 +00:00
wayland, x11, headless, noop)
Document env vars used by wlroots
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* *WLR_WL_OUTPUTS*: when using the wayland backend specifies the number of outputs
* *WLR_X11_OUTPUTS*: when using the X11 backend specifies the number of outputs
Document WLR_HEADLESS_OUTPUTS
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* *WLR_HEADLESS_OUTPUTS*: when using the headless backend specifies the number
of outputs
output: introduce WLR_NO_HARDWARE_CURSORS
2018-09-14 16:07:21 +00:00
* *WLR_NO_HARDWARE_CURSORS*: set to 1 to use software cursors instead of
hardware cursors
Add support for WLR_SESSION env variable Valid values are "logind"/"systemd" and "direct". If WLR_SESSION is set, only its value is potentially tried; it will not try any other option.
2018-09-17 23:18:35 +00:00
* *WLR_SESSION*: specifies the wlr\_session to be used (available sessions:
logind/systemd, direct)
Document env vars used by wlroots
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rootston specific
------------------
backend: allow multiple backends in WLR_BACKENDS
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* *XKB_DEFAULT_RULES*, *XKB_DEFAULT_MODEL*, *XKB_DEFAULT_LAYOUT*,
*XKB_DEFAULT_VARIANT*, *XKB_DEFAULT_OPTIONS*: xkb setup
Document env vars used by wlroots
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generic
-------
* *DISPLAY*: if set probe X11 backend in *wlr_backend_autocreate*
backend: allow multiple backends in WLR_BACKENDS
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* *WAYLAND_DISPLAY*, *_WAYLAND_DISPLAY*, *WAYLAND_SOCKET*: if set probe Wayland
backend in *wlr_backend_autocreate*
Document env vars used by wlroots
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* *XCURSOR_PATH*: directory where xcursors are located