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From: irwin@sealy.uchicago.edu (Mark Irwin)
Newsgroups: comp.sys.mac.misc
Subject: Re: DeskWriter and System 7.0 -- problems
Message-ID: <1991May19.054717.3931@midway.uchicago.edu>
Date: 19 May 91 05:47:17 GMT
References: <1991May18.194140.6948@parc.xerox.com>
Sender: news@midway.uchicago.edu (NewsMistress)
Organization: Department of Statistics, University of Chicago
Lines: 50

In article <1991May18.194140.6948@parc.xerox.com> ebert@parc.xerox.com (Robert Ebert) writes:
>The situation:
>SE/30, Pre-AppleTalk DeskWriter, 2.1 driver from sumex-aim, System 7.0
>
>With virtual memory off, I can print OK, but... after printing the display
>is pretty messed up.  It looks like imaging is being done in color, but
>it's being interpolated to 1 bit.  Icons look funky, and the selected icon
>hi-liting from the finder is messed up.  This "effect" starts after the
>first DW dialog box appears, and continues until the system is rebooted.
>Occassionally, the finder will crash with a Bus Error when doing a shutdown.
>
>This same effect can be reproduced on a Mac II with a color display (but
>no DW attached.)  Simply select the DW (or the AppleTalk DW) from the chooser,
>then do a Page Setup to get the dialog...
>
>With virtual memory on, when I try to print, I get between 1 and 2 inches
>of output followed by "Datacom buffer overrun - no DTR handshaking.", then
>the printer lights blink sequentially.  I can cancel printing with command-.,
>but, well, printing is impossible.
>
>Checking the manual, the datacom error can be caused by cable problems.
>Since it prints fine under system 6.0.7, that's *not* the problems.
>
>HP Tech support says they've fully tested with system 7.0, and refer me
>to a dealer.  That is, they refuse to acknowledge that the driver is the
>source of the problem.  ComputerWare hasn't tried this yet...
>
>Has anyone gotten this to work properly?  Can you print to a DW with VM on?
>If you can't, please call HP support at (208) 323-2551 and hassle them.
>
>
>			--Bob


I've had the same problem with the same setup.  One thing that is
slightly different that the problem with the weird looking icons has
disappeared (at least for a while).  I wonder if these might be due to
an init conflict that Bob and I haven't been able to find yet.  I guess
I should call HP Tech support.

If anybody knows what is causing this problem I would appreciate knowing
why.

Mark


Mark Irwin     Dept of Statistics, Univ of Chicago
irwin@galton.uchicago.edu
irw1@midway.uchicago.edu
mark@stat.ubc.ca