On 12/13/2015 10:40:10 PM, Berend De Schouwer wrote: > On Sun, 2015-12-13 at 19:23 -0800, Geoffrey Leach wrote: > > I have a LaserJet 1300 printer that connects via a Belkin parallel > > port-to-USB connector. When I send a document to the printer, half > > the time it prints without hesitation; other times it stalls until I > > disconnect and re-connect the USB cable. When I do that, here's what > > dmesg reports: > > I've had some devices do that when they didn't get enough power over > USB. Have you tried another USB port? Do you have a powered USB hub? > > > [80924.737154] usb 4-1.1: USB disconnect, device number 4 > > [80924.737587] usblp0: removed > > [80926.381095] usb 4-1.1: new full-speed USB device number 5 using > > ehci-pci > > [80926.472738] usb 4-1.1: New USB device found, idVendor=050d, > > idProduct=0002 > > [80926.472749] usb 4-1.1: New USB device strings: Mfr=1, Product=2, > > SerialNumber=0 > > The serial number shouldn't be zero. Cups uses different serial > numbers do differentiate between printers. It shouldn't be, but it > can > be. > > What's the cups device? Are you using parallel://dev/lp0 or usb:// ? > Might be something like > "usb://EPSON/Stylus%20Photo%20R200?serial=M02P20502230111234" > > > [80926.472755] usb 4-1.1: Product: IEEE-1284 Controller > > [80926.472759] usb 4-1.1: Manufacturer: Belk USB Printing Support > > [80926.497804] usblp 4-1.1:1.0: usblp0: USB Bidirectional printer > dev > > 5 if 0 alt 1 proto 2 vid 0x050D pid 0x0002 > > > > CUPS discovers the printer without any problems. However, when I > send > > the test document from CUPS, no amount of fiddling with the USB > cable > > will cause it to print. > > Will "echo -en 'hello world\n\f' > /dev/usb/lp0" print? This should > print the text, with a form feed. I assume it will block (wait > forever) Submitted by root, the command prints fine. dev/usb/lp0 is character special (180/0) > The device might be /dev/usblp0 or /dev/usb/lp0. There might be a > symbolic link /dev/lp0 -> /dev/usb/lp0. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
