Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I had installed Ubuntu 12.04 on my desktop. It was running fine but when I realized that I was not using my graphics card to its fullest. (Ignorance is bliss !)

After I installed the graphics driver for NVIDIA and rebooted, I am not able to login again. ( either through GUI or through other means)

First, I see the following error

The disk drive for /dev/mapper/cryptswap1 is not ready yet or not present Continue to wait; or Press S to skip mounting or M for manual recovery

There are many solutions related to swap partitions, prerequisite is to login through backdoor( using either CTRL + ALT + F1 or CTRL + ALT + T (Yes, I know that I can also use F2 to F6)

If somehow I am able to see the login name entry, it disappears within a moment and after that keyboard does not work at all. Even Numlock does not make the green light on. Before that the message printed on screen is

mountall: Plymouth command failed
mountall: Disconnected from Plymouth

When I searched have found many solutions to above problem also, but anyways it requires us to be

Possibly there are persons like me who had suffered earlier because of this and have not got any answer. The question here is the nearest to mine,

Any inputs on getting my keyboard work ?

share|improve this question
Have you tried booting into recovery mode? –  Charles Green Jun 15 '14 at 15:05

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.