Thanks for the bug report. It looks like the machine is missing an Nvidia kernel driver (and failed to use the open source driver). Please try installing a new driver through the 'Additional Drivers' app. I expect only Nvidia driver 470 supports the GT 730.
After rebooting, if that hasn't fixed the problem then please try one of the workarounds from bug 1975650 such as: sudo apt install linux-modules-nvidia-470-`uname -r` ** Package changed: xorg (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Incomplete -- 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/2080266 Title: Wrong screen resolution (missing nvidia kernel module) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2080266/+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