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pages/Configuring/Environmental-variables.md
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@ -11,56 +11,56 @@ Linux distros.
## XDG Specifications ## XDG Specifications
- XDG_CURRENT_DESKTOP=Hyprland - `XDG_CURRENT_DESKTOP=Hyprland`
- XDG_SESSION_TYPE=wayland - `XDG_SESSION_TYPE=wayland`
- XDG_SESSION_DESKTOP=Hyprland - `XDG_SESSION_DESKTOP=Hyprland`
XDG specific environmental variables are often detected through portals and applications that may XDG specific environmental variables are often detected through portals and applications that may
set those for you, however it is a good idea to provide them in your wrapper script as a fail-safe. set those for you, however it is a good idea to provide them in your wrapper script as a fail-safe.
## QT Variables ## QT Variables
- QT_AUTO_SCREEN_SCALE_FACTOR=1 - [(From the QT documentation)](https://doc.qt.io/qt-5/highdpi.html) - `QT_AUTO_SCREEN_SCALE_FACTOR=1` - [(From the QT documentation)](https://doc.qt.io/qt-5/highdpi.html)
enables automatic scaling, based on the monitor's pixel density enables automatic scaling, based on the monitor's pixel density
- QT_QPA_PLATFORM="wayland;xcb" - Tell QT applications to use the Wayland backend, and fall back to x11 if Wayland is unavailable - `QT_QPA_PLATFORM="wayland;xcb"` - Tell QT applications to use the Wayland backend, and fall back to x11 if Wayland is unavailable
- QT_WAYLAND_DISABLE_WINDOWDECORATION=1 - Disables window decorations on QT applications - `QT_WAYLAND_DISABLE_WINDOWDECORATION=1` - Disables window decorations on QT applications
- QT_QPA_PLATFORMTHEME=qt5ct - Tells QT based applications to pick your theme from qt5ct, use with Kvantum. - `QT_QPA_PLATFORMTHEME=qt5ct` - Tells QT based applications to pick your theme from qt5ct, use with Kvantum.
## NVIDIA Specific ## NVIDIA Specific
To force GBM as a backend, set the following environment variables: To force GBM as a backend, set the following environment variables:
- GBM_BACKEND=nvidia-drm - `GBM_BACKEND=nvidia-drm`
- \_\_GLX_VENDOR_LIBRARY_NAME=nvidia - `__GLX_VENDOR_LIBRARY_NAME=nvidia`
> See [Archwiki Wayland Page](https://wiki.archlinux.org/title/Wayland#Requirements) for more details on those variables. > See [Archwiki Wayland Page](https://wiki.archlinux.org/title/Wayland#Requirements) for more details on those variables.
- LIBVA_DRIVER_NAME=nvidia - Hardware acceleration on NVIDIA GPUs - `LIBVA_DRIVER_NAME=nvidia` - Hardware acceleration on NVIDIA GPUs
> See [Archwiki Hardware Acecleration Page](https://wiki.archlinux.org/title/Hardware_video_acceleration) > See [Archwiki Hardware Acecleration Page](https://wiki.archlinux.org/title/Hardware_video_acceleration)
> for details and necessary values before setting this variable. > for details and necessary values before setting this variable.
- \_\_GLX_GSYNC_ALLOWED - Controls if G-Sync capable monitors should use Variable Refresh Rate (VRR) - `__GLX_GSYNC_ALLOWED` - Controls if G-Sync capable monitors should use Variable Refresh Rate (VRR)
> See [Nvidia Documentation](https://download.nvidia.com/XFree86/Linux-32bit-ARM/375.26/README/openglenvvariables.html) for details. > See [Nvidia Documentation](https://download.nvidia.com/XFree86/Linux-32bit-ARM/375.26/README/openglenvvariables.html) for details.
- \_\_GL_VRR_ALLOWED - Controls if Adaptive Sync should be used. Recommended to set as "0" to avoid having problems on some games. - `__GL_VRR_ALLOWED` - Controls if Adaptive Sync should be used. Recommended to set as "0" to avoid having problems on some games.
- WLR_DRM_NO_ATOMIC=1 - use legacy DRM interface instead of atomic mode setting. Might fix flickering issues. - `WLR_DRM_NO_ATOMIC=1` - use legacy DRM interface instead of atomic mode setting. Might fix flickering issues.
## Toolkit Backend Variables ## Toolkit Backend Variables
- SDL_VIDEODRIVER=wayland - Run SDL2 applications on Wayland. Remove or set to x11 if games that provide older versions of SDL cause - `SDL_VIDEODRIVER=wayland` - Run SDL2 applications on Wayland. Remove or set to x11 if games that provide older versions of SDL cause
compatibility issues compatibility issues
- \_JAVA_AWT_WM_NONEREPARENTING=1 - Fix possibly broken Java applications. Set to 1 until Wakefield is available. - `_JAVA_AWT_WM_NONEREPARENTING=1` - Fix possibly broken Java applications. Set to 1 until Wakefield is available.
- CLUTTER_BACKEND="wayland" - Clutter package already has wayland enabled, this variable will force Clutter applications - `CLUTTER_BACKEND="wayland"` - Clutter package already has wayland enabled, this variable will force Clutter applications
to try and use the Wayland backend to try and use the Wayland backend
- GDK_BACKEND - Force backend for wayland-enabled GTK3 and GTK4 backends. Available options are "wayland" or "x11". If GTK XWayland - `GDK_BACKEND` - Force backend for wayland-enabled GTK3 and GTK4 backends. Available options are "wayland" or "x11". If GTK XWayland
applications cause issues when set to "wayland", try "wayland,x11" applications cause issues when set to "wayland", try "wayland,x11"
## Theming Related Variables ## Theming Related Variables
- GTK_THEME - Set a GTK theme manually, for those who want to avoid appearance tools lxappearance or nwg-look - `GTK_THEME` - Set a GTK theme manually, for those who want to avoid appearance tools lxappearance or nwg-look
- XCURSOR_THEME - Set your cursor theme. The theme needs to be installed and readable by your user. - `XCURSOR_THEME` - Set your cursor theme. The theme needs to be installed and readable by your user.
- XCURSOR_SIZE - Set cursor size. See [here](../FAQ/) for why you might want this variable set. - `XCURSOR_SIZE` - Set cursor size. See [here](../FAQ/) for why you might want this variable set.