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Kai-Heng Feng 8e58aa46ac gen_default_modes: Consider reduced blanking with lower pixelclock 
Some panels only support fixed resolutions and fixed refresh rate with reduced blanking:
  Established Timings I & II: none
  Standard Timings: none
  Detailed Timing Descriptors:
    DTD 1:  2560x1600  120.001823 Hz   8:5    203.283 kHz    552.930000 MHz (345 mm x 215 mm)
                 Hfront   48 Hsync  32 Hback   80 Hpol P
                 Vfront    3 Vsync   6 Vback   85 Vpol N
    DTD 2:  2560x1600   48.000295 Hz   8:5     81.312 kHz    221.170000 MHz (345 mm x 215 mm)
                 Hfront   48 Hsync  32 Hback   80 Hpol P
                 Vfront    3 Vsync   6 Vback   85 Vpol N
...
    Minimum Pixel Clock: 552922 kHz
    Maximum Pixel Clock: 552922 kHz

When using mirror mode, resolutions like 2560x1440 120Hz can be too high
to meet the pixelclock limitation, so 2560x1440 90Hz is selected
instead. However, the panel only supports 120Hz so using 90Hz result to
failed mode set.

So add reduced blanking to fallback mode, so correct refresh rate can be
used.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3449>
2024-01-18 12:12:06 +08:00
.gitlab/issue_templates gitlab: Add missing < in markdown comment tag 2020-02-14 03:10:28 +00:00
.gitlab-ci ci: Look for matching ref in user remote for branch pipeline 2023-08-08 04:11:13 +02:00
clutter clutter: Move ClutterCanvas to gnome-shell 2024-01-17 11:58:47 +01:00
cogl build: Make g-ir-scanner warnings fatal when -werror is set 2024-01-17 09:26:00 +00:00
data backends/native: Main thread rt-scheduler: experimental feature no more 2024-01-13 15:10:31 +01:00
doc doc: Update link to commit message guidelines 2024-01-16 09:37:21 +00:00
meson build: Replace custom post-install script 2022-11-19 02:21:05 +01:00
mtk build: Make g-ir-scanner warnings fatal when -werror is set 2024-01-17 09:26:00 +00:00
po Update Greek translation 2024-01-14 22:43:00 +00:00
src gen_default_modes: Consider reduced blanking with lower pixelclock 2024-01-18 12:12:06 +08:00
subprojects build: Update sysprof build options 2022-12-17 19:58:00 +00:00
tools docs: Move the gitlab wiki and other docs to the docs/ directory 2024-01-03 20:54:57 +00:00
.gitignore misc: Add common noisy dirs to gitignore 2024-01-08 19:53:57 +01:00
.gitlab-ci.yml ci: Update gsettings-desktop-schemas 2024-01-14 17:21:09 +00:00
check-style.py ci: Mark the regex to find chunks in code style checks as regex string 2023-12-15 14:49:57 +00:00
config.h.meson build: One config file to rule them all 2023-11-15 12:00:19 +00:00
COPYING Updated obsolete FSF postal address in COPYING 2014-01-12 08:44:30 +07:00
logo.svg docs: Add a logo 2024-01-09 13:38:54 +00:00
meson_options.txt edid: Integrate libdisplay-info for edid parsing 2023-05-02 17:37:01 +00:00
meson.build build: Make g-ir-scanner warnings fatal when -werror is set 2024-01-17 09:26:00 +00:00
mutter.doap DOAP: Remove defunct mailing list; add Discourse 2023-09-15 03:19:22 +02:00
NEWS Bump version to 46.alpha 2024-01-06 22:28:28 +01:00
README.md misc: Use the new mutter.gnome.org URL 2024-01-12 10:48:20 +00:00

README.md

Mutter

Mutter is a Wayland display server and X11 window manager and compositor library.

When used as a Wayland display server, it runs on top of KMS and libinput. It implements the compositor side of the Wayland core protocol as well as various protocol extensions. It also has functionality related to running X11 applications using Xwayland.

When used on top of Xorg it acts as a X11 window manager and compositing manager.

It contains functionality related to, among other things, window management, window compositing, focus tracking, workspace management, keybindings and monitor configuration.

Internally it uses a fork of Cogl, a hardware acceleration abstraction library used to simplify usage of OpenGL pipelines, as well as a fork of Clutter, a scene graph and user interface toolkit.

Mutter is used by, for example, GNOME Shell, the GNOME core user interface, and by Gala, elementary OS's window manager. It can also be run standalone, using the command "mutter", but just running plain mutter is only intended for debugging purposes.

Contributing

To contribute, open merge requests at https://gitlab.gnome.org/GNOME/mutter.

It can be useful to first look at the GNOME Handbook and the documentation and API references below first.

Documentation

API Reference

License

Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.