Michael Weghorn - 15.06.19, 23:52:
> On 11/06/2019 23.37, Martin Steigerwald wrote:
> > Hmmm, so it works okay with okular 19.04.1.
> > 
> > That means somewhere between 17.12 and 19.04.1 is a bug fix for the
> > issue you reported. Maybe upstream has an idea which one it might
> > be. At this point I believe all that could be done would be to find
> > and then backport that fix, as Debian is in deep freeze and
> > packaging 19.04 thus out of scope.
> 
> I've investigated a bit and it's not an Okular issue, but one in the
> Qt print dialog with printers that don't have PPD files. It can be
> reproduced e.g. with kate just the same and Brian even mentioned in
> the initial report that qpdfview is affected as well.
> 
> The issue has been fixed upstream (qtbase) with the following commit
> (so that's what would have to be backported):
> 
> 
>     commit 84cc8d0badb4abc3c9a96d59c61dddce916a216c
>     Author: Albert Astals Cid <albert.astals....@kdab.com>
>     Date:   Mon Feb 5 09:20:20 2018 +0100
> 
>         cups: Support raw printers
> 
>         They don't have a ppd but we don't *really* need a ppd to just
> print
> 
>         Change-Id: Idf6b6dafc19420a511b057194488e2170cae4d70
> 
> 
> This probably also fixes #911702, but I didn't test that explicitly.

Michael, thank you are lot for your research which made that bug report 
actionable.

Of course there may be another bug in there: When one printer cannot be 
used for some reason, it should not automatically switch to another one. 
But nonetheless the commit you pointed out looks like it can really help 
here.

Best,
-- 
Martin

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