I confirm this issue on Ubuntu 20.04 LTS; Nvidia driver 440.100; Linux kernel 5.4.0-42-lowlatency; GeForce 1060 6GB Two monitors: LG 27GL850 (144Hz DP connection) and Asus VG248 (60 Hz single-link DVI connection, despite display could more) If the second (slow) display is connected "effective" refresh rate on first (fast) display is limited to 60 Hz. I mean effective, despite xrandr shows 140, actual window moving traces, effects in 3D games are similar to 60 Hz, and testufo.com also shows 60Hz. If I disable slow display in nvidia-settings, effective refresh rate (window moving, games) are smooth as supposed to be, and ufotest shows 144 Hz and smooth ufo moving. I remember that there were no such issues with some previous version of nvidia driver (3xx)
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-amdgpu in Ubuntu. https://bugs.launchpad.net/bugs/1820832 Title: [xorg] multiple monitors: limits the framerate of faster 120/144hz monitors to 60hz To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-418/+bug/1820832/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
