# DispCtrl for Linux
DispCtrl for Linux brings Windows 11–style display controls and window management to X11 desktops.
Features include:
A lightweight background engine starts at login and keeps your settings applied. Both the graphical interface and the dispctrl-linux command-line tool communicate with this engine.
## Requirements and Limitations
### X11 Required
DispCtrl requires an X11 session. Wayland compositors control gamma ramps and window placement, so these features cannot be managed directly by DispCtrl under Wayland.
### External Monitor Brightness
The Snap package cannot control an external monitor's hardware brightness through DDC/CI because strict Snap confinement prevents access to the required I²C buses.
For external-monitor DDC/CI support, use the .deb package or the release tarball instead.
### Laptop Backlight Permissions
Laptop backlight control requires an additional permission that the Snap package does not connect automatically.
Grant it with:
```bash sudo snap connect dispctrl-linux:login-session-control ```
## Credits
DispCtrl for Linux is a Linux port of [DispCtrl](https://github.com/jesvijonathan/DispCtrl), originally created by [Jesvi Jonathan](https://github.com/jesvijonathan).
## Documentation
For Linux-specific installation instructions, configuration details, and troubleshooting, see the [Linux documentation](https://github.com/HaythmKenway/DispCtrl/blob/master/docs/LINUX.md).
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
On Arch Linux, snap can be installed from the Arch User Repository (AUR). The manual build process is the Arch-supported install method for AUR packages, and you’ll need the prerequisites installed before you can install any AUR package. You can then install snap with the following:
git clone https://aur.archlinux.org/snapd.git
cd snapd
makepkg -si
Once installed, the systemd unit that manages the main snap communication socket needs to be enabled:
sudo systemctl enable --now snapd.socket
If AppArmor is enabled in your system, enable the service which loads AppArmor profiles for snaps:
sudo systemctl enable --now snapd.apparmor.service
To enable classic snap support, enter the following to create a symbolic link between /var/lib/snapd/snap and /snap:
sudo ln -s /var/lib/snapd/snap /snap
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To install DispCtrl, simply use the following command:
sudo snap install dispctrl-linux
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.