"can'texec getty'/usr/X11R6/bin/xdm" for port /dev/tty8: no such file or directory

[Joachim Dagerot]

I have had this error message for quite some time now. It's not
bothering me too much because it's mainly published in the logs and on
the console, and I normally don't even have a monitor attached to the
system.

But now during this weekends maintainance I have been working from
console and get the message:

"can't exec getty '/usr/X11R6/bin/xdm" for port /dev/tty8: no such
file or directory

every 30 second or so, incredibly irritating when writing a longer
bash-command.

I searched the archive but only found a solution telling that the /usr
was improperly mounted, which in no way is the case.

Any other ideas?