As recently as kubuntu 16.04, it is not fixed if the user switches to the nvidia video driver. I tried several times to switch back to nouveau and back with no luck. About 95% of the time I'd get a blank screen; no prompt. The rest of the time I'd get the unlock prompt but keyboard input was ignored. The fact that the update manager is also broken in kubuntu 16.04 doesn't help. I was able to switch back and forth using 'ubuntu-drivers devices' and apt-get. I also tried 'update-initramfs -u' incase hid/usb was somehow not there.
What finally worked was to change grub to 'quiet nosplash' -- get rid of the splash screen. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1238194 Title: keyboard doesn't work to enter password with encrypted partitions ubuntu 13.10 saucy To manage notifications about this bug go to: https://bugs.launchpad.net/initramfs-tools/+bug/1238194/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs