I have installed the printer driver in the template and the Cups service in the App VM is enabled. But Cups does not recognize the location of my new printer. With the old printer this is not a problem, because with commands like:
sudo lpstat -t
sudo lpinfo -l -v
the correct address is found: hp:/usb/(model name)
On the new one it just says: usb://dev/usb/lp0
I can install the new printer on a normal Debian system via system-config-printer, but it does not work in Qubes VMs.
Does anyone have any advice?