Yesterday I upgraded to Ubuntu 12.04, upon the upgrade completing my USB keyboard would not work. My USB mouse works fine and I have tried 3 different keyboards in all of my USB ports as well as a PS2 keyboard.
May be I can Help you! (I hope) Try this general ways they might help U out:
protected by Community♦ May 26 '12 at 7:02
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
Would you like to answer one of these unanswered questions instead?