When I logged back into my Ubuntu desktop after an update, my display driver was seemingly unavailable and I was met with vt-7's output. I changed to a different terminal and logged in. However, when I attempted to use sudo to install a display driver, sudo hung forever. No prompt for a password, Ctrl+c Ctrl+d Ctrl+z all didn't do anything. It ate my virtual terminal. I changed to another one and the same thing happened. What's happening?
#%PAM-1.0 auth required pam_env.so readenv=1 user_readenv=0 auth required pam_env.so readenv=1 envfile=/etc/default/locale user_readenv=0 @include common-auth @include common-account @include common-session-noninteractive
Other commands such as ifconfig also seem to hang.
I think that this breakage has to do with the fact that Ubuntu tried to upgrade a kernel with an earlier verison. I was running kernel 3.7.1 which I downloaded and installed manually, and Ubuntu did a dist-upgrade which "upgraded" the kernel to 3.2.X. I have a feeling that this messed things up substantially. I'm going to try reinstalling the kernel and see if I can undo some of the fallout. Note to self: always disable Ubuntu kernel updates when running a later kernel.