Correction: https://code.launchpad.net/~vanvugt/ubuntu/+source/mutter/+git/mutter/+merge/363599
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1763892 Title: 144Hz/120Hz monitor but mutter seems to cap rendering at 60FPS Status in Mutter: Fix Released Status in mutter package in Ubuntu: Fix Released Status in mutter source package in Bionic: Triaged Status in mutter source package in Cosmic: In Progress Bug description: [Impact] Gnome Shell redraws at 60 FPS at most, regardless of the hardware refresh rate, and regardless of the current display mode. This is particularly annoying for owners of 144Hz/120Hz/240Hz displays. [Test Case] 0. Find a monitor or laptop with a high refresh rate (120Hz or more), noting NOT to trust gnome-control-center or xrandr because an unrelated bug in mutter may cause those to report 120Hz even on 60Hz displays. Make sure the advertised hardware specs show the display is a high frame rate. 1. Edit /etc/environment and add: CLUTTER_SHOW_FPS=1 2. Reboot. 3. Open a terminal window and run: journalctl -f | grep FPS 4. In a new window run 'glmark2' or some other OpenGL benchmark that is not frame rate limited (note: glxgears for unrelated reasons IS frame rate limited in Wayland sessions, but can be used in Xorg sessions). 5. Verify the terminal window from step 4 shows high FPS values coming from the journalctl log that match the hardware spec, and are much higher than 60. [Regression Potential] Medium to low. This patch has been used upstream and in Ubuntu 19.04 for some months already without any issues. Although minor syntactical changes had to be made to avoid conflicts when backporting it from mutter 3.32 to mutter 3.30. If regressions did occur they would be visible in the frame rate of the entire screen. To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/1763892/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
