print on both sides of paper--solved!

[Peter Flynn]

On 09/11/2022 21:41, Douglas McGArrett wrote:

> Both printers are on the LAN.

OK, cool. So are mine, and all the Linux systems I have installed in the 
last few years have found them without problems. But that has not 
included Kubuntu, and it's been noticeable that some distributions come 
with rather old CUPS versions, so the features provided for the printers 
are sometimes a little odd.

For example, my HP OfficeJet HPLIP driver defaults to A4 if I try to 
print an email from Thunderbird or qpdfview, but if I try to print a web 
page from Vivaldi or Brave, it insists that the default paper size is 
called "Index Card A4 8.27x11.69in" (yes, really!). It all prints OK, 
but someone somewhere goofed and omitted the actual A4 setting. Yet the 
A4 setting *is* there, somewhere. Quite why some minion felt that 
calling A4 and Index Card was a good idea is a mystery.

Peter