running ubuntu 14.04, unity 7.2.1 on Dell e5540 laptop. time after time Tab key starts working a little strange.
- doesn't work by itself - autocompletion in bash or switching between inputs in a browser forward
- doesn't work with ctrl - switching between tabs in browser forward
- does work with shift - switching between inputs in a browser backwards
- does work with ctrl+shift - switching between tabs in browser backwards
- does work with alt - switching between windows
the issue appears without any reason i can think of and disappears after a while without me doing anything about it.
seen same behavior on my previous laptop, which was also from Dell and was on ubuntu 12.04.