I've got the same issue on a system76 gazelle - I just reinstalled 20.04 hoping that this would fix the issue, but the 5.8.0-38 kernel does not complete the boot cycle by itself.
I have found that switching to tty2 and then back to tty1 causes the boot to complete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1911352 Title: Black screen on boot after 20.04 upgraded to kernel 5.8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1911352/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs