I've got an old elo crt touchscreen with serial connection.
found the driver for it at www.elotouch.com/support/dnld.asp
(Unified Serial Driver
After a few mess ups, I finally was able to follow all the compilation steps correctly.
Now the thing is, when I add the lines /elo/loadelo and /elo/eloser ttyS0 to rc.local, the touchscreen works.
However, after I've logged in the x-window screen, x-window fails to load.
Just a dark blue screen with a mouse-cursor.
When I try to run startx in another terminal while logged on as a normal user, I get the message "startx: line 169: /dev/null: Permission denied".
Doing thesame logged in as root gives no problem.
When I remove the two lines in rc.local X-Window works fine, but ofcourse the touchscreen isn't usable.
What could be wrong?