I have a network printer Konica Minolta bizhub C20P. Until yesterday, I'd been able to print for the past couple of years. I had Ubuntu 10.04, I upgraded to 12.04 a couple of days ago (both 10.04 and 12.04 were 32 bits). Yesterday I did a fresh installation of 14.04 64 bits, and today I've been trying to get the printer to work. I've tried several things:
a. install a new printer through System Settings/Printers, then either 1. add a driver file kmC20Pnp.ppd which I downloaded from the Minolta download centre (which is the driver I had until yesterday, which worked for all these years), or 2. select the printer model from a list;
b. install a new printer through localhost:631 with 1. and 2. (every time I try a new thing, I uninstall the unsuccessful printer first);
c. I've also tried selecting ipp and lpd printers, the last thing I tried was type lpd://IP_address/print on the Device URI, which ended up in crashing the printer
d. also some of what's described here about the i386 architecture: Can't get my Canon LBP printer to run under Ubuntu 14.04 (I had problems before while trying to install acroread that had to do with an incompatibility between i386 and amd64, so I thought that might be the problem).
Whenever I try to print a test page or otherwise connect to the printer (like when I for instance change the ipp: address) it keeps crashing (it's a copier and printer at the same time, so when it crashes, no one can print anymore, it doesn't respond to pings, and the copier doesn't respond either).
Any insight on what's happening and how to solve it will be very appreciated.