Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!crdgw1!uunet!spooky!witr From: witr@rwwa.COM (Robert Withrow) Newsgroups: comp.unix.sysv386 Subject: Re: SVR4: postio filter and /dev/lp---Does it work? Message-ID: <1991Apr21.023535.12218@rwwa.COM> Date: 21 Apr 91 02:35:35 GMT References: <1991Apr19.210815.8136@rwwa.COM> Organization: R.W. Withrow Associates Lines: 45 In article <1991Apr19.210815.8136@rwwa.COM> I wrote: |On my system ``postio'' seems to hang causing ``printer fault'' mail |saying something about ``printer setup''..??? I've read the printed |FM, and get no help there. Has *anyone* gotten *any* postscript printer to work with SVR4? I doubt it as this seems to be a fertile area for bugs on Intel SVR4 V2. In fiddling with this I found the following rather obvious bug: In the documentation for lp(7) it states that the /dev/lpx port operates as documented in termio(7). This is a FIB, however, since no one got around to telling the autopush(1) utility to push the terminal line discipline module onto this device. If you want the lp(7) driver to operate as documented you want to add a line like this to your /etc/ap/chan.ap file: # major minor lastminor modules 7 -1 0 ldterm ttcompat Changing that doesn't make postio work though...It complains about getting an error ``reading stdout''. Reading from /dev/lp???? Ho.ho.ho.ho. So, I moved the printer over to a serial port and tried again. With a break-out box inline, I can see the printer and postio talking, but they don't seem to be saying much. I printed a 500 byte postscript file and they have been talking like that for *HOURS*. I thought the CompuTune man said that ``computers don't like to engage in smalltalk!'' So, if anyone has gotten a postscript printer to work on their SVR4 system, please tell me what magic you used......Please..... Also, if anyone knows what postio does that is so important, I'd like to hear about it. -- --- Robert Withrow, R.W. Withrow Associates, Swampscott MA 01907 USA Tel: +1 617 598 4480, Fax: +1 617 598 4430, Net: witr@rwwa.COM