Firefox on my Dad’s machine always wants to print to 300 DPI by default. He can manually change it, but it’s annoying. Other browsers pick up the printer default of 600 DPI and are happy, but not Firefox. He posted a bug on Launchpad for it and then afterwards I found a fix for it upstream in Mozilla’s Bugzilla.
It’s as simple as:
As user, open a shell and enter:
lpoptions -o Resolution=600dpi
This will add a default resolution to ~/.cups/lpoptions
My ~/.cups/lpoptions contains:
Default IP4200 Resolution=600dpi
So anyone who has the same issue, here’s the work around.