Most applications are working fine for printing, picking A4 correctly as well as the duplex settings.

However, some apps don't, one being Acrobat Reader, or even the image viewer. It always defaults to Letter. Acrobat Reader gives me this setting when I change to A4 and duplex:



that it will use. It tells me I can set this by default, but I've no idea which file I need to edit. All cups stuff is set correctly using localhost:631 so there is nothing I can change there. It must be something else I need to look at but I've no idea what.

Guess nobody knows how to do this then :sigh:

Same as the Fedora form, no response :unhappy:

Sorry Ian, but I did some research and could not come up with a solution. If I should stumble upon a hint anywhere, I will let you know.

What is your default locale? US English?
You could try changing it to British English, or (maybe) Irish, if you want to have goodies like the Euro symbol under console...
Have you tried adding in /etc/sysconfig/i18n a line like

(or similar)
and then init 1 and then back init 5?

My laptop, being one that was bought in Poland, has a US keyboard layout, so can't really change too much for affecting that. However, I've added the LC_PAPER to the /etc/sysconfig/i18n file, and will see if it makes a difference when I reboot later.

Nope, didn't work. I added that line and it still wants to print letter. As I said, it's only Adobe Reader and some others that are doing this by default. The majority are OK.