Hiya all,

I have experienced some strange (to me) problems when attaching my
printer ( Canon LPB4+ with PostScript module) to the parallel port of
my Sparc Classic. The printout is rather incomplete, i.e. it appears
as if data are dropped "somewhere" during the transmission. However
two subsequent printouts of the same document reveals that the
"dropping" of data is consistant: it's the same part of the printout
that are missing. As an example, I have a testpage where the first
line is "Welcome". However when printing from the Sparc-box, the 'c'
and 'o' are missing (and the other letters are printed partially).

Attaching the printer cable to the parallel port of an x86-machine
(IBM ThinkPad 390 running an equivalent kernel 2.2.13) and trying to
print the same file yields a perfect printout with absolutely no
problems.

It appears wierd to me - as if there might be something wrong with
the communication between the printer and the Sparc. However I have
been unable to find any usefull information when searching the web
and the mailing list archieves - hence I turn to you good people for
advice.

The current setup on the SparcClassic is some RedHat 6.0 with the 
2.2.13-kernel. However with all other kernels I've tried (lately
2.2.5 - compiling a kernel on a Classic takes quite some time) the
problem is exactly the same.

Can anyone offer any advice - or share their experiences (good or
bad) on this issue with me? I am reluctant to blame the bpp-driver
(though it _is_ said to be experimental in the kernel source), but
perhaps there are some requirements for that to work correctly? (The
printer is from before EPP and ECP was "invented").

Any help appreciated - thanks in advance.

-- 
------------------------------------------------
Thomas Heide Clausen 
Civilingenioer i Datateknik (cand.polyt),
M.Sc. in Computer Engineering
Email: [EMAIL PROTECTED]
WWW:   http://www.cs.auc.dk/~voop
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