In kern.log, look for rows near the search string "API mismatch". They point out the error that occurred during boot.
** Attachment added: "kern.log" https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1916971/+attachment/5467750/+files/kern.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1916971 Title: After fresh Ubuntu 20.04 install, downgrading Nvidia driver doesn't update nvidia modules in kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1916971/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
