Just to add a little more information, I have the same issue with a HP ProBook 450 G6 with an i7-8565U processor. I am running 20.04 and have had to stick with the 5.8.0-55-generic kernel because anything newer (e.g. 5.8.0-59-generic) causes this bug to rear its ugly head. I can set GRUB_CMDLINE_LINUX_DEFAULT="nomodeset" in the /etc/default/grub file and get the main monitor to display, but then external monitors no longer work.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1933716 Title: Black screen on boot after stable update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1933716/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
