I finally got a workaround working. See the links mentioned in my previous comment for background. Note that this is NoMachine NX, not FreeNX. The solution for me was to just add /etc/X11/rgb.txt and restart the nxserver
-- so the files /usr/X11R6/lib/X11/rgb.txt and /usr/share/X11/rgb.txt may also be needed (for something. I don't know).
(2) The file rgb.txt ships with many packages, see for example
$ apt-file search rgb.txt
It can probably also be downloaded from the Internet. However, do *not* use the one that ships with NX itself ( /usr/NX/share/rgb.txt ), that one did not work for me for some reason.
All in all, I think this is a duplicate of bug #300935 . Any objections?
I finally got a workaround working. See the links mentioned in my previous comment for background. Note that this is NoMachine NX, not FreeNX. The solution for me was to just add /etc/X11/rgb.txt and restart the nxserver
$ sudo cp /usr/share/ emacs/23. 0.93/etc/ rgb.txt /etc/X11/rgb.txt
Notes:
(1)
$ strings /usr/NX/bin/* | grep /rgb X11R6/lib/ X11/rgb share/X11/ rgb
/usr/
/usr/
/etc/X11/rgb
-- so the files /usr/X11R6/ lib/X11/ rgb.txt and /usr/share/ X11/rgb. txt may also be needed (for something. I don't know).
(2) The file rgb.txt ships with many packages, see for example
$ apt-file search rgb.txt
It can probably also be downloaded from the Internet. However, do *not* use the one that ships with NX itself ( /usr/NX/ share/rgb. txt ), that one did not work for me for some reason.
All in all, I think this is a duplicate of bug #300935 . Any objections?