Fixing a Thunderbolt dock/display issue on Dell XPS 1300 in Ubuntu by unlocking Thunderbird

I came into work this morning after taking a week off.

I plugged my notebook into my docking station as usual, but couldn’t get the screens or wired internet to work. When I went to Settings > Display only the built in display was showing rather than the three I have attached to my docking station. I could turn the computer on and off using the button on my docking station.

I did the usual things when the docking station doesn’t work exactly as it should:

1. Restart the computer
2. Cold boot the computer (i.e. Read the rest of this entry »