Ben, can you please try something for me? Run `xev` from a console. A window pops up. Press the right alt key down, and then release it. Then, without putting the mouse cursor in that window, close it out by clicking the "x". Post the last two paragraphs of the output here. They should start with "Keypress event," and "KeyRelease event."
If you get similar output to what I just posted in bug 63365, then this is a duplicate of that bug. Thanks -- Dell Inspiron 600m: right alt key doesn't work https://launchpad.net/bugs/67178 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs