Archive for the ‘linux’ Category

FreeNX rgb.txt configuration

June 21, 2006

I recently installed FreeNX. It's a very fast remote-desktop server – like VNC or Remote Desktop, only much faster over slow connections.

All was well until I tried running Emacs inside a FreeNX session. Emacs refused to start, complaining:

Undefined color: "black".

It turned out that FreeNX's nxagent program has the path to X's rgb.txt file hardcoded inside itself:

$ strings /usr/lib/nx/nxagent | grep /rgb

Whereas the real location of rgb.txt is /etc/X11/rgb.txt. I worked around this by making a symlink:

sudo ln -s /etc/X11/rgb.txt /usr/X11R6/lib/X11/

Then when FreeNX looks in /usr/X11R6/lib/X11 for rgb.txt, it can find it, and Emacs is able to start up.