- C 94.2%
- Python 2.2%
- Roff 1.2%
- Objective-C 1%
- Meson 0.9%
- Other 0.3%
| Filename | Latest commit message | Latest commit date |
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Problem: On a 2K (e.g. 2560x1440) display, WPS Office for Linux (Qt) shows corrupted text and broken vertical lines on the right side of a maximized window when the UI is updated by mouse movement (e.g. hover/scroll refreshing labels). The same controls on the left side are fine. The issue does not appear at 1080p, without glamor, or when using desktop OpenGL shaders (non-GLES). Root cause: Xwayland GBM n-buffering CopyArea's window pixmap into the present pixmap via glamor_copy (FBO texture blit). UVs are computed as (offset + pixel) * (1/width, 1/height). GLES fragment shaders default to mediump (~10-bit relative precision), so on wide pixmaps UVs near the right edge can be off by about a pixel; with GL_NEAREST this shows as shifted/broken glyphs and edges. Desktop OpenGL has no default mediump precision qualifier, so the same shader path is fine. Fix: Force highp only on fillpos uniforms/ins/outs. Keep the global mediump default for other fragment math. Change-Id: If747516bdf787e0383b42e3579acfeab30a7cb1c Signed-off-by: Kevin.Li <kevin.li@cixtech.com> Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/2315> (cherry picked from commit |
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XLibre Xserver
The XLibre Xserver is the community-managed display server for the X Window System Protocol Version 11 (Wikipedia), in short, X11.

Selected Features
- All the good things from X.Org Server, including its unreleased features
- TearFree modesetting by default and optionally atomic modesetting
- Support for the Nvidia drivers 340, 390, 470, 570, and newer
- Xnamespace extension for separating X clients
- Support for seat management via seatd besides systemd-logind
- Xfbdev, the generic framebuffer Xserver for Linux
- CI builds for several BSDs, Linux, MacOS, and Microsoft Windows
- Active community, cleanups, fixes, and development based on merit
To learn more about the features and mission of XLibre, please visit our homepage.
Switching to XLibre
The easiest way to install and run XLibre is to use your distribution's provided packages. Please see the Are We XLibre Yet? - (X11Libre/xserver Wiki) page for a list of the available options. If there is no option, then go on with building and installing XLibre from source.
Building XLibre
After cloning the Xserver repository or unpacking the sources and installing the dependencies, change into the source directory and run the Meson build tool:
cd "<source dir of xserver>"
meson setup <prefix> build <meson_options>
ninja -C build install
You may specify the install <prefix> with, for example, --prefix="$(pwd)/image" and add build time <meson_options> like so: -Dxnest=false. You may also want to build and install some graphics and input drivers. Please refer to the Building XLibre (X11Libre/xserver Wiki) page for more details.
Configuring XLibre
Until XLibre releases its own, you can find a detailed description of the configuration on the Configuration - Xorg (ArchWiki) page. If you have built and installed XLibre yourself, then change into the <prefix> directory with cd <prefix> and create a directory etc/X11 with a file xorg.conf and adjust it accordingly.
Starting with version 25.0.0.16, the proprietary Nvidia driver is autodetected and handled internally without any special configuration. Please see the Compatibility of XLibre (X11Libre/xserver Wiki) page for more details on the Nvidia driver and compatibility in general.
Running XLibre
If you installed XLibre using your distribution's provided packages, then the Xserver is usually started by init (Wikipedia) on system start. On other systems it should be possible to manually start XLibre with user permissions by invoking startx. Please refer to man startx for how to use it.
If you have built and installed XLibre yourself, then you may want to shutdown other Xservers, change into the <prefix> directory, and create a simple testx.sh file with the following contents:
#!/bin/sh
./bin/X :1 vt8 -logfile /dev/stdout &
_pid=$!
sleep 10 && kill $_pid
You can adjust the :1 vt8 and other options in the testx.sh file as detailed in man Xorg. Make the testx.sh executable and run it:
chmod 0770 testx.sh
./testx.sh
This should give you 10 glorious seconds of a black and beautiful and empty screen. Afterwards the Xserver complains about being killed, but there should be no other critical errors for a "test passed." For more details, please see Building XLibre (X11Libre/xserver Wiki).
I want to help!
That's great; there's enough to do for everyone. You may consider one of the many ideas and feature requests out there. To help in testing, you may consider becoming an XLibre Test Driver. Please also have a look at the good first and help wanted issues and the Liberated Screens.
If you want to work on anything, just let us know. If you have any questions, just ask. Thank you!
Contact
XLibre Discussions at GitHub | XLibre mailing list at FreeLists | @x11dev channel at Telegram | #xlibredev space at Matrix | XLibre security contact at GitHub