Disable Ctrl+Alt+Fn
 

I'm trying to disable virtual terminal switching in my Ubuntu install. I tried adding the following to xorg.conf (not both at the same time, obviously):

Section "Serverflags"
Option "DontVTSwitch" "yes"
EndSection

Section "Serverflags"
Option "DontVTSwitch" "true"
EndSection

Neither of them worked; I could still switch with Ctrl+Alt+F1, etc. How do I disable terminal switching in Ubuntu?

Do you already have another Serverflags section in your xorg.conf? If so, you might need to add it there. Did you restart X after each attempt to make sure the config-file was re-read? Did it give any warnings (WW) that might've indicated that there was an error with the config file?

There was no other "Serverflags" section already existing. I restarted X each time so xorg.conf was re-read. When I tried the first one, nothing unusual happened, except that I was still able to switch virtual terminals as usual. When I tried the second, X wouldn't come up at all until I deleted those lines from xorg.conf with vi.

What is WW?

(WW) is the code X inserts in front of lines containing warnings in its logs. (EE) is the code for errors. Ordinarily, X.org will create a file like /var/log/Xorg.0.log with information about its startup procedure. You could check in there to see if it said anything about that option.

Nope, no mention of "serverflags" at all in that file.

Has anyone ever disabled the virtual terminal switching in Ubuntu? Or in Debian, perhaps?

I've found that apparently all you should need is:
Give that a try and see if it works.