[Bug 75858] Re: regression: png to postscript -> black image

[Till Kamppeter]

I have printed both PostScript files on a native PostScript printer (HP
LaserJet 3390 AIO) now and both come out black, but not totally black.
One sees the structure of bad.png somewhat. So the PostScript produced
by libgnomeprint still contains the information of the image but prints
way too dark. Some gamma correction would be needed here.

Raising gamma ("lpr -o gamma=10000 file.ps") makes the image more
visible but is still too dark.

The bug is clearly in libgnomeprint, as all apps not using libgnomeprint
print OK. GhostScript is also OK, as both versions do the same as the
PostScript printer does.

So either libnomeprint needs to be fixed (is it still maintained?) or
all apps using libgnomeprint need to be updated to use the new GTK
printing infrastructure (introduced with GTK 2.10.x).


** Changed in: libgnomeprint (Ubuntu)
   Importance: Low => Medium

-- 
regression: png to postscript -> black image
https://launchpad.net/bugs/75858