Important Patches Land To Improve GNOME's Multi-Monitor Experience With High Refresh Rates
Written by Michael Larabel in GNOME on 2 July 2020 at 06:07 PM EDT. Add A Comment
GNOME --
If you have say a 144Hz gaming monitor as well as a conventional 60Hz secondary display or any other multi-monitor configuration with different refresh rates, there is now another reason to get excited for GNOME 3.38.

MR #1285 by Red Hat's Jonas Ådahl has finally landed. This is the material to allow scheduling of frames for each stage views separately. As summed up by Jonas:
This branch, while being quite large, has one major aim: split up the frame clock so that on the native backend each CRTC is driven by its own frame clock. In effect this means that e.g. a 144 Hz monitor and a 60 Hz monitor being active in the same session will not have to wait for each other to render. A window on the 144 Hz monitor will paint at 144 Hz, and mutter will composite to the monitor at 144 Hz, while a window on the 60 Hz monitor will paint at 60 Hz and mutter will composite to the monitor at 60 Hz.

This is very important for improving the multi-monitor experience with such configurations as up to now capping the refresh rate to match is a less than desirable experience. This work landed today in Mutter for September's release of GNOME 3.38. This next release is shaping up to be quite exciting with the plethora of optimizations to already land thus far. It is important to note that this multi-monitor improvement only benefits the GNOME Wayland session and not under X11.

Update: Jonas has now written a blog post as well outlining more of this work.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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