updated three laptops to Ubuntu 120.4 LTS. Printing works fine as long as I am connected to the network via (LAN) cable. The moment it pull the cable and switch to WLAN I get the message "unable to locate printer". (All other functions work when connected via WLAN: so I have mail in Thunderbird , can browse the internet with Firefox and sync my stuff with UbuntuOne. It is just the printing which does not work over WLAN.)
Additionally, I cannot find/locate/add any new printer when connected to the WLAN. But I see both network printers (in my home-network) when connected via LAN. Seems that CUPS and/or Avahi have a big problem with WiFi at the moment.
(I can see and find printers when using connecting my Mac over WiFi, so the problem does not originate from the printers ).
Same here,
updated three laptops to Ubuntu 120.4 LTS. Printing works fine as long as I am connected to the network via (LAN) cable. The moment it pull the cable and switch to WLAN I get the message "unable to locate printer". (All other functions work when connected via WLAN: so I have mail in Thunderbird , can browse the internet with Firefox and sync my stuff with UbuntuOne. It is just the printing which does not work over WLAN.)
Additionally, I cannot find/locate/add any new printer when connected to the WLAN. But I see both network printers (in my home-network) when connected via LAN. Seems that CUPS and/or Avahi have a big problem with WiFi at the moment.
(I can see and find printers when using connecting my Mac over WiFi, so the problem does not originate from the printers ).