Comment 84 for bug 374459

I'm on a HP Pavillion, but I've experienced the same problems. I was reluctant to try the nomux fix, as it requires some work in getting the touchpad working properly again. Anyway, in my case bash and the keyboard stopped working, except for a few buttons. All the F-keys and the bottom row still worked. The only chance it gave me was some ctrl-alt-F# combinations. And miraculously one combination worked for me:

First press ctrl-alt-F1 (takes you to a login screen)
Then press ctrl-alt-F7 and everything should be fine again.