millercb@phoenix.princeton.edu (Clifford B Miller) (11/29/90)
------------------------------------------------------------------------------ Posted for adam@research.nec.com, reply to him: ------------------------------------------------------------------------------ Hello UNIX-people! I'm having some trouble with our network printers. I have about 10 NEC laser printers connected to a Sun4 server running 4.0.3. Every once in a while, one of the printers gets into a state where it's "waiting for lock on /dev/ttyN" where N is the printer device. No combination of lpc commands seems to remedy this...I've had to physically disconnect the printer from the serial port to get rid of this state. I have also tried things like sending an end-of-file character to the printer. What does this state really mean? What is lpd really waiting for? Any suggestions to remedy this situation would be greatly appreciated! Clifford B. Miller, Research Associate / Systems Administrator NEC Research Institute, 4 Independence Way, Princeton, NJ 08540 Internet: cliff@research.nec.com phone: (609) 951-2688 UUCP: ...princeton!necserve!cliff
libes@cme.nist.gov (Don Libes) (12/09/90)
In article <522@brchh104.bnr.ca> millercb@phoenix.princeton.edu (Clifford B Miller) writes: >4.0.3. Every once in a while, one of the printers gets into a state where >it's "waiting for lock on /dev/ttyN" where N is the printer device. No >combination of lpc commands seems to remedy this...I've had to physically >disconnect the printer from the serial port to get rid of this state. I >have also tried things like sending an end-of-file character to the >printer. What does this state really mean? What is lpd really waiting >for? Any suggestions to remedy this situation would be greatly >appreciated! I have a program that cures that state by resetting various things. 'lpunlock' comes as an example in the 'expect' distribution. (It needs expect because it uses lpc, and it also figures out if the printer is remote and rlogin's to it with root privs if necessary.) expect may be ftp'd as pub/expect.shar.Z from durer.cme.nist.gov. Request email delivery by mailing to "library@cme.nist.gov". The contents of the message should be (no subject line) "send pub/expect.shar.Z". Don Libes libes@cme.nist.gov ...!uunet!cme-durer!libes