On Thu, Jan 30, 2014 at 10:56:56AM +0100 or thereabouts, Martin Pieuchot wrote: > Hello Maurice, > > On 29/01/14(Wed) 18:55, Maurice McCarthy wrote: > > On Wed, Jan 29, 2014 at 06:31:55PM +0100 or thereabouts, Antoine Jacoutot > > wrote: > > [...] > > > > Thank you Antoine, I've never actually tried to configure cups through ulpt > > after reading your pkg-readme. But after seeing this is dmesg: > > > > $ dmesg | grep ugen > > ugen0 at uhub0 port 4 configuration 1 "EPSON USB2.0 MFP(Hi-Speed)" rev > > 2.00/1.00 addr 3 > > $ dmesg | grep ulpt > > ulpt0 at uhub0 port 4 configuration 1 interface 1 "EPSON USB2.0 > > MFP(Hi-Speed)" rev 2.00/1.00 addr 3 > > ulpt0: using bi-directional mode > > > > ... it made me wonder whether ulpt is enabled in the default 5.4 kernel or > > not. > > The reason behind enabling ulpt(4) in the default kernel is that you > might be able to use your printer without 3rd party programs. > > ugen(4) is here to provide an interface to use userland drivers, and > that's what CUPS is all about, it bundles a lot of drivers for printers. > > With some coding efforts, it should be possible to use both at the same > time, but somebody has to do it. > > > $ sudo usbdevs -vd > > Controller /dev/usb0: > > addr 1: high speed, self powered, config 1, EHCI root hub(0x0000), > > ATI(0x1002), rev 1.00 > > uhub0 > > port 1 addr 2: high speed, self powered, config 1, USB2.0 Hub(0x0605), > > Genesys Logic(0x05e3), rev 6.0b > > uhub10 > > port 1 powered > > port 2 powered > > port 3 powered > > port 4 powered > > port 2 powered > > port 3 powered > > port 4 addr 3: high speed, self powered, config 1, USB2.0 > > MFP(Hi-Speed)(0x0849), EPSON(0x04b8), rev 1.00, iSerialNumber > > 4B4C4E4B3032373907 > > ulpt0 > > umass0 > > ugen0 > > Here comes all the fun :) You still have ulpt0 attached to your device, > and that is certainly why you get an USB write error: > > > [...] > > D [29/Jan/2014:18:40:39 +0000] [Job 2] libusb write operation returned > > ffffff9d. > > Could you try disabling ulpt(4) in your kernel like it is said in cups' > README? Then make sure only ugen(4) and umass(4) are attached to your > device after reboot, check your /dev/ugen* permissions and try again. > > M. >
Ah, OK that is splendid. I don't yet know how to disable ulpt but I'm sure I'll find it. Thank you Maurice
