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From: mikec@wam.umd.edu (Michael D. Callaghan)
Newsgroups: comp.sys.next
Subject: As the Ports Turn (The Soap Opera)
Summary: Another exciting episode in Locking Serial Ports
Message-ID: <1991Apr23.013250.24420@wam.umd.edu>
Date: 23 Apr 91 01:32:50 GMT
Sender: usenet@wam.umd.edu (USENET Posting)
Organization: University of Maryland at College Park
Lines: 36

I just upgraded to 2.1 today! I decided to check out my locked
Serial Port A. 

I got a new error:
	cannot open device: not owner

Don't know what that means, but I decided to su to root, and
try there. 
	cannot open device: device busy

HMM...

OK..Give up on /dev/cua, and try /dev/ttya. Hey! It works! 
Why does it work?

I set speed to 2400, and connected (I'm using Kermit 5A). 
OK...I'm talking to the modem now. And I get these little
bursts of PostScript coming from the Cube!!! 

              )cvs print(, 126 1181 ]%%)= flush

is an example of one line that I caught. Something on my
Cube is trying to send PostScript code out Serial Port A!
I have no idea what's doing it. 

Can someone give me a clue, or point me in a direction so
that I can find out what's doing this?

Thanks,


-- 
MikeC
_________________________________________________________
Michael D. Callaghan, MDC Designs, University of Maryland
mikec@wam.umd.edu