Had a similar issue on a 20.04 install today after updating to 5.14. Woke it up from suspend on 5.10.0-1057-oem. Rebooted once (some screen issues that turned out to be the screen), installed updates via update- manager, rebooted using the new 5.14.0-1024-oem kernel and it just hung. Black screen, blinking cursor.
I noticed that the lenovo splash screen did not come up after selecting the 5.14 kernel in grub. It does with 5.10. Going back to 5.10 works as before. I have a kern.log saved from the before and after the update, but do I need to make sure it is sanitized for secure boot keys and such? Also, it should be noted that it is a dual GPU system with an intel and nvidia. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1942684 Title: Kernel 5.14.X / 5.13.14 fails to boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1942684/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
