I did a test with testing nvidia driver 495.46.run, it will have a lag issue when use 'on-demand' mode in 'external-only' mode. After enabled the proposed and did 'apt-dist upgrade', now I use latest xserver-xorg- core, this issue is fixed now.
xserver-xorg-core:amd64 (2:1.20.11-1ubuntu1~20.04.2, 2:1.20.13-1ubuntu1~20.04.1 xwayland:amd64 (2:1.20.11-1ubuntu1~20.04.2, 2:1.20.13-1ubuntu1~20.04.1) kernel: 5.14.0.1008.8-oem -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1947820 Title: [SRU] Backport xorg-server 1.20.13 to focal To manage notifications about this bug go to: https://bugs.launchpad.net/amd/+bug/1947820/+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
