multiple monitors on xorg
Was recently discussed over on ubuntu launchpad bug tracker. The new bug we would like for you to look at (over there) is:
The slowest connected display limits the FPS. The test case we used, is described at the top of this page: @ https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1763892 (which is an older bug report, for some other fixes).
This specific problem has recently been investigated by Daniel. Who now believes that there may be a issue in the NVIDIA graphics driver. Which was not visible previously due to other masking / hiding bug (now solved).
kernel 5.0.0-050000-lowlatency #201903032031
NVIDIA Driver for UNIX platforms 415.27 (the closed source one)
This bug only occurs with multiple monitors plugged in, of different refresh rates. If the 2nd (60hz) monitor is unplugged. Then the FPS of the primary monitor recovers and goes back up to it’s maximum rate of 120/144fps.
Have carefully tried all the other suggested solutions / workarounds. However none of them work. So we hope you can also look into this latest problem / issue, specifically for the multiple monitor scenario on Xorg. Since nobody from NVIDIA has been assigned to the bug yet! Thank you.