Angie Saxton wrote:This sound like flow control problem. With serial printers you need to configure the same flow control protocol to both printer and printcap.
I hope someone in the group may have solved this problem. I have to set up some serial printers, all HP lasers of one flavor or another.
I can cat files (postscript) directly to the ports and get output. I can send files via LPRng and get output, but in both cases larger files are truncated.
On an LPRng HOWTO page I found this symptom reported as a problem with closing_wait, and to use setserial to change the default from 30 seconds. This isn't the case here, as our closing_wait is set to infinite.
The supplier of the serial card suggested holding the port open with a cat command. This does work for files sent directly to the port, and they are not truncated. It does not work with LPRng which complains that the device is busy, and gives no output.
Any ideas please?
This probably isn't your problem, but ... we had a similar problem (though printer was not serial but networked with an external JetDirect box), which was fixed by removing "status@" from the printcap entry - that is, turning on status monitoring. (I forget why this had been in the printcap entry in the first place (following some example or comment somewhere), but I'm pretty sure this is what fixed the problem.)
man -a termios (ixon,ixoff,crtscts)
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