I installed the focal-proposed updates yesterday, just checked and I can confirm the background corruption issue is still there, tho it's not as much as before. Before it used to change to a complete grey static, but now the wallpaper is still visible to an extent. I'll attach a screenshot.
** Attachment added: "Screenshot from 2021-01-16 09-44-49.png" https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1855757/+attachment/5453618/+files/Screenshot%20from%202021-01-16%2009-44-49.png -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-390 in Ubuntu. https://bugs.launchpad.net/bugs/1855757 Title: [nvidia] Background image corrupted after standby or resume from suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1855757/+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