I am sure.
I've checked if they are correctly stored in autogen.cfg, and they are. I know that vid_restart is a comand, but I was explaining what I had typed in the game console.
This is very strange and seems to be a game bug, maybe there is a devel around who can tell us. It would be a strange bug, as the Tremulous code is based on the IcculusQ3's one and I can play IQ3 in widescreen without problems.