82 lines
3.4 KiB
Markdown
82 lines
3.4 KiB
Markdown
You can use the `env` keyword to set environment variables prior to the initialization of
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the Display Server, e.g.:
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```ini
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env = GTK_THEME,Nord
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```
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{{< hint type=important >}}
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Hyprland puts the raw string to the envvar with the `env` keyword. You should _not_ add quotes around the values.
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e.g.:
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```ini
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env = QT_QPA_PLATFORM,wayland
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```
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and ***NOT***
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```ini
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env = QT_QPA_PLATFORM,"wayland"
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```
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{{< /hint >}}
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Please avoid putting those environment variables in /etc/environment. That will cause all
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sessions (including Xorg ones) to pick up your wayland-specific environment on traditional
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Linux distros.
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# Hyprland Environment Variables
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- `HYPRLAND_LOG_WLR=1` - Enables more verbose logging of wlroots.
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- `HYPRLAND_NO_RT=1` - Disables realtime priority setting by Hyprland.
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- `HYPRLAND_NO_SD_NOTIFY=1` - If systemd, disables the `sd_notify` calls.
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# Toolkit Backend Variables
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- `GDK_BACKEND=wayland,x11` - GTK: Use wayland if available, fall back to x11 if not.
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- `QT_QPA_PLATFORM="wayland;xcb"` - Qt: Use wayland if available, fall back to x11 if not.
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- `SDL_VIDEODRIVER=wayland` - Run SDL2 applications on Wayland. Remove or set to `x11` if games that provide older versions of SDL cause
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compatibility issues
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- `CLUTTER_BACKEND=wayland` - Clutter package already has wayland enabled, this variable will force Clutter applications
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to try and use the Wayland backend
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# XDG Specifications
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- `XDG_CURRENT_DESKTOP=Hyprland`
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- `XDG_SESSION_TYPE=wayland`
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- `XDG_SESSION_DESKTOP=Hyprland`
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XDG specific environment variables are often detected through portals and applications that may
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set those for you, however it is not a bad idea to set them explicitly.
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# Qt Variables
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- `QT_AUTO_SCREEN_SCALE_FACTOR=1` - [(From the Qt documentation)](https://doc.qt.io/qt-5/highdpi.html)
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enables automatic scaling, based on the monitor's pixel density
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- `QT_QPA_PLATFORM=wayland;xcb` - Tell Qt applications to use the Wayland backend, and fall back to x11 if Wayland is unavailable
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- `QT_WAYLAND_DISABLE_WINDOWDECORATION=1` - Disables window decorations on Qt applications
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- `QT_QPA_PLATFORMTHEME=qt5ct` - Tells Qt based applications to pick your theme from qt5ct, use with Kvantum.
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# NVIDIA Specific
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To force GBM as a backend, set the following environment variables:
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- `GBM_BACKEND=nvidia-drm`
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- `__GLX_VENDOR_LIBRARY_NAME=nvidia`
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> See [Archwiki Wayland Page](https://wiki.archlinux.org/title/Wayland#Requirements) for more details on those variables.
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- `LIBVA_DRIVER_NAME=nvidia` - Hardware acceleration on NVIDIA GPUs
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> See [Archwiki Hardware Acceleration Page](https://wiki.archlinux.org/title/Hardware_video_acceleration)
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> for details and necessary values before setting this variable.
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- `__GL_GSYNC_ALLOWED` - Controls if G-Sync capable monitors should use Variable Refresh Rate (VRR)
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> See [Nvidia Documentation](https://download.nvidia.com/XFree86/Linux-32bit-ARM/375.26/README/openglenvvariables.html) for details.
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- `__GL_VRR_ALLOWED` - Controls if Adaptive Sync should be used. Recommended to set as "0" to avoid having problems on some games.
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- `WLR_DRM_NO_ATOMIC=1` - use legacy DRM interface instead of atomic mode setting. Might fix flickering issues.
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# Theming Related Variables
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- `GTK_THEME` - Set a GTK theme manually, for those who want to avoid appearance tools such as lxappearance or nwg-look
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- `XCURSOR_THEME` - Set your cursor theme. The theme needs to be installed and readable by your user.
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- `XCURSOR_SIZE` - Set cursor size. See [here](../../FAQ/) for why you might want this variable set.
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