I am unable to use virtual console. Tried all combinations of cTRL+alt+f- . Only X works fine. Rest all screens show an underscore (cursor) which doesn't blink. I can't even login.
Googling lead to a solution which said to change resolution in grub configuration and enable grub terminal. It worked for a few days, but doesn't work from last night.
Debian Stretch with KDE plasma 5
Linux image 4.4 (whatever is the latest one on testing)
Grub EFI.
Any help?