cups usb printer (Brother) on -current
 

So I was trying to print to a Brother MFC7420 connected via usb using the new cups in -current. I followed the same procedure I have for years, downloading the lpr driver and cupswrapper rpm packages from the Brother web site, converted them to tgz with the alien perl script using the -c -t flags, and installing the subsequent tgz's. I restarted cups, and voila my printer appeared. Only I couldn't print to it. After a lot of googling, I found that changing "DeviceURI usb:/dev/usb/lp0" to "DeviceURI file:///dev/usblp0" in /etc/cups/printers.conf made it work.

I don't know if this is specific to usb printers, brother printers or what, so I just let people know in case the have the same problem.

Brian

cups 1.3 saw my printer Canon s100, but upgrading to cups 1.4 have the same problem.

all the above listed did not help )))) only downgrading cups is helping

Maybe this helps:
http://www.linuxquestions.org/questi...oblems-793787/

removing, usblp did not help in my case.