Thank you for your confirmation. If your system did not reboot, then CPU or other HWs hung up. This is firmware and/or hardware related bug, not software.
I think this problem cannot is fixed by generic method, there is only workaround by "i915.enable_guc=3" on specific device. FYI, you can also use another workaround using modprobe commented by kapper1224 instead of editing GRUB. $ echo "options i915 enable_guc=3" | sudo tee -a /etc/modprobe.d/i915.conf $ sudo update-initramfs -u -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1939347 Title: Ubuntu 20.04 freeze since kernel 5.11 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939347/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
