Vim background color doesn't render properly in GNOME terminal

Question

I'm guessing lots of people get this problem, but I can't seem to find any other threads/questions about it anywhere. I guess it's difficult to capture in keywords.

Basically, Vim doesn't draw the background color when scrolling up in places where there is no text. I've also seen it on my friend's Mac, so it's not peculiar to my setup.

I have a pretty big vimrc, but I get the same problem without a vimrc and setting :colorscheme blue.

I'm using gnome-terminal on Ubuntu 11.10 (Oneiric Ocelot). It's a fairly clean install that I set up only a few days ago, so there's not really any funny business going on. I expect this would happen out of the box.

I've not had this problem in other contexts e.g. over SSH with PuTTY or previous versions of Ubuntu which I'm guessing was also gnome-terminal.

What's going on?

Answer 1

In Linux I had export TERM=xterm-256color in my .bashrc. That caused Vim to look like this (after setting set t_Co=256):

When I removed that line from my .bashrc and opened a new terminal (exec bash didn't do it). This is what I get (you need to have set t_Co=256):