A weird thing happened today: I clicked in terminal icon and it didn't launched, just blinked and disappeared. If I press ctrl+alt+t it won't launch. I tried to launch a light terminal by pressing ctrl+alt+f1. The login screen, appeared to put my login and password, the system accepted the login and password but quickly returned to the login screen. Its a kind of loop: I enter the login and the system returns to the login screen. Xterm doesn't work too.
However, unity seems to works correctly.
Its the first time that the terminal doesn't work, and I don't know how to fix this bug.
I would appreciate any kind of help.
I had installed
mysecureshell before the reported issue and when I removed this package the problem was corrected partially. The terminal works (xterm too) but the light terminals (tty), accessed by ctrl+alt+f1, remains in loop during the login.
Below are pasted my bashrc and the result of dmesg: