In my case it was the same behavior, but the cause was a kernel boot parameter(acpi=noirq).
Added details on how I found it here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1894012/comments/9 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1894017 Title: Keyboard not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1894017/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
