I've switched back to the 5.4 kernel and have enabled the 'nomodeset' parameter. The laptop has booted fine. I'll keep using it like this and let you know if I see another hang on boot.
I've noticed that Wayland is no longer an option on the login screen. I presume this is an expected consequence of disabling modesetting. $ cat /proc/version Linux version 5.4.0-31-generic (buildd@lgw01-amd64-059) (gcc version 9.3.0 (Ubuntu 9.3.0-10ubuntu2)) #35-Ubuntu SMP Thu May 7 20:20:34 UTC 2020 $ cat /proc/version_signature Ubuntu 5.4.0-31.35-generic 5.4.34 $ cat /etc/default/grub | grep GRUB_CMDLINE GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset" GRUB_CMDLINE_LINUX="" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1877889 Title: Intermittent hangs on boot Ubuntu 20.04 on Lenovo E595 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1877889/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
