It appears you have a manually installed Nvidia driver, which is not supported, and it stopped working around the time of the kernel update from 5.8.0-48 to 5.8.0-49.
Please uninstall the NVIDIA driver you have and in future only install NVIDIA drivers using the 'Additional Drivers' app so as to ensure they will keep working with future kernel updates. ** Package changed: xorg (Ubuntu) => linux-hwe-5.8 (Ubuntu) ** Changed in: linux-hwe-5.8 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1924190 Title: Display is wrong resolution, aspect ratio, and size To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.8/+bug/1924190/+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