Same problem for me. I have an old parallel-only printer. It has been working with a dedicated printer server, but the printer server died and the PC has no parallel port. So I connected a USB-to-LPT cable. As I attach the cable /var/log/syslog shows:
parport0: fix this legacy no-device port driver! lp0: using parport0 (polling) There does not exist a /dev/usb/lp0. I still set "DeviceURI parallel:/dev/usb/lp0" since that is what the instructions still say (https://wiki.ubuntu.com/DebuggingPrintingProblems#USB_-.3E_Parallel_adapter), and indeed that fails. I also tried "DeviceURI parallel:/dev/parport0" and CUPS rejected it. Then I tried "DeviceURI parallel:/dev/lp0". CUPS accepted it, I sent a test print, and it just sits on the job queue with the msg "Printer not connected; will retry in 30 seconds". # usb_printerid /dev/lp0 Error: Invalid argument: GET_DEVICE_ID on '/dev/lp0' # usb_printerid /dev/parport0 Error: Invalid argument: GET_DEVICE_ID on '/dev/parport0' At another moment, I got a different error: # usb_printerid /dev/lp0 Error: Device or resource busy: can't open '/dev/lp0' This is on Bionic. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/910272 Title: USB->Parallel adapter produces crappy device URI and CUPS "usb" backend cannot cope with it Status in cups package in Ubuntu: Fix Released Status in cups source package in Oneiric: Won't Fix Bug description: Parallel port dot matrix printer Panasonic KX-P2124 connected via usb- parallel cable to HP6600 PC; running Ubuntu 11.10 system located on external hard drive attached by usb. Worked on Ubuntu version 8 using URI "parallel:/dev/usb/lp0". Understand that usblp has been deprecated; replace with ??? Cups reports printer not connected. CUPS version is (from UbuntuSoftwareCenter) - "cups 1.5.0-8ubuntu6". #Researched existing bugs - lots of info - no results. No "Help" menu found by selecting upper right located "Gear"/"Printers; could not find any "Wizard." Thank you for your assistance, nvsoar ------------------------------------ w8@w8-FJ463AAR-ABA-a6528p:~$ uname -a Linux w8-FJ463AAR-ABA-a6528p 3.0.0-15-generic #24-Ubuntu SMP Mon Dec 12 15:25:25 UTC 2011 i686 i686 i386 GNU/Linux w8@w8-FJ463AAR-ABA-a6528p:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 002: ID 067b:3507 Prolific Technology, Inc. PL3507 ATAPI6 Bridge Bus 001 Device 004: ID 058f:6377 Alcor Micro Corp. Multimedia Card Reader Bus 002 Device 002: ID 050d:0002 Belkin Components #Device immediately above is usb to parallel cable w8@w8-FJ463AAR-ABA-a6528p:~$ lsmod | grep lp lp 17455 0 parport 40930 4 parport_pc,ppdev,uss720,lp w8@w8-FJ463AAR-ABA-a6528p:~$ lsmod | grep ppdev ppdev 12849 0 parport 40930 4 parport_pc,ppdev,uss720,lp w8@w8-FJ463AAR-ABA-a6528p:~$ lsmod | grep parport_pc parport_pc 32114 0 parport 40930 4 parport_pc,ppdev,uss720,lp w8@w8-FJ463AAR-ABA-a6528p:~$ ls -l /dev/usb/lp* /dev/bus/usb/*/* ls: cannot access /dev/usb/lp*: No such file or directory crw-rw-r-- 1 root root 189, 0 2011-12-30 15:04 /dev/bus/usb/001/001 crw-rw-r-- 1 root root 189, 1 2011-12-30 15:04 /dev/bus/usb/001/002 crw-rw-r-- 1 root root 189, 3 2011-12-30 15:04 /dev/bus/usb/001/004 crw-rw-r-- 1 root root 189, 128 2011-12-30 15:04 /dev/bus/usb/002/001 crw-rw-r-- 1 root lp 189, 129 2011-12-30 15:25 /dev/bus/usb/002/002 w8@w8-FJ463AAR-ABA-a6528p:~$ dmesg | grep par [ 0.000000] Booting paravirtualized kernel on bare hardware [ 0.000000] vt handoff: transparent VT on vt#7 [ 0.210399] hpet0: 3 comparators, 32-bit 25.000000 MHz counter [ 28.754567] uss720: protocols (eg. bitbang) over USS720 usb to parallel cables [ 28.893725] type=1400 audit(1325286282.534:2): apparmor="STATUS" operation="profile_load" name="/sbin/dhclient" pid=705 comm="apparmor_parser" [ 28.893736] type=1400 audit(1325286282.534:3): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=755 comm="apparmor_parser" [ 28.894175] type=1400 audit(1325286282.534:4): apparmor="STATUS" operation="profile_load" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=755 comm="apparmor_parser" [ 28.894324] type=1400 audit(1325286282.534:5): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=705 comm="apparmor_parser" [ 28.894438] type=1400 audit(1325286282.534:6): apparmor="STATUS" operation="profile_load" name="/usr/lib/connman/scripts/dhclient-script" pid=755 comm="apparmor_parser" [ 28.894592] type=1400 audit(1325286282.534:7): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=705 comm="apparmor_parser" [ 30.347397] type=1400 audit(1325286283.986:8): apparmor="STATUS" operation="profile_load" name="/usr/share/gdm/guest-session/Xsession" pid=969 comm="apparmor_parser" [ 30.347408] type=1400 audit(1325286283.986:9): apparmor="STATUS" operation="profile_load" name="/usr/lib/lightdm/lightdm-guest-session-wrapper" pid=970 comm="apparmor_parser" [ 30.353749] type=1400 audit(1325286283.994:10): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=973 comm="apparmor_parser" [ 30.359290] type=1400 audit(1325286283.998:11): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=973 comm="apparmor_parser" [ 34.659441] ppdev: user-space parallel port driver [ 34.672608] type=1400 audit(1325286288.314:24): apparmor="STATUS" operation="profile_replace" name="/usr/lib/cups/backend/cups-pdf" pid=1540 comm="apparmor_parser" [ 34.673270] type=1400 audit(1325286288.314:25): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/cupsd" pid=1540 comm="apparmor_parser" w8@w8-FJ463AAR-ABA-a6528p:~$ ls -l /dev/lp* /dev/parport* ls: cannot access /dev/lp*: No such file or directory ls: cannot access /dev/parport*: No such file or directory w8@w8-FJ463AAR-ABA-a6528p:~$ ls -l /proc/sys/dev/parport/parport*/autoprobe* ls: cannot access /proc/sys/dev/parport/parport*/autoprobe*: No such file or directory w8@w8-FJ463AAR-ABA-a6528p:~$ sudo cat /proc/sys/dev/parport/parport*/autoprobe* [sudo] password for w8: cat: /proc/sys/dev/parport/parport*/autoprobe*: No such file or directory w8@w8-FJ463AAR-ABA-a6528p:~$ lpinfo -v network ipp network http network socket direct hp direct scsi network lpd network smb network beh direct hpfax w8@w8-FJ463AAR-ABA-a6528p:~$ /usr/lib/cups/backend/parallel w8@w8-FJ463AAR-ABA-a6528p:~$ sudo /usr/lib/cups/backend/parallel w8@w8-FJ463AAR-ABA-a6528p:~$ -------------------------------- #From CUPS@localhost:631/Printers/ ▼ Queue Name ▼ Description Location Make and Model Status Panasonic-KX-P2135 Panasonic KX-P2135 Epson LQ-850 Foomatic/lq850 (recommended) Processing - "Printer not connected; will retry in 30 seconds." ------------------------------end ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: cups 1.5.0-8ubuntu6 ProcVersionSignature: Ubuntu 3.0.0-15.24-generic 3.0.13 Uname: Linux 3.0.0-15-generic i686 NonfreeKernelModules: nvidia ApportVersion: 1.23-0ubuntu4 Architecture: i386 Date: Fri Dec 30 16:33:40 2011 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007) Lpstat: device for Panasonic-KX-P2135: parallel:/dev/lp0 device for Stylus-COLOR-880: usb://EPSON/Stylus%20COLOR%20880?serial=EPIDH0012072218460 Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 002: ID 067b:3507 Prolific Technology, Inc. PL3507 ATAPI6 Bridge Bus 001 Device 004: ID 058f:6377 Alcor Micro Corp. Multimedia Card Reader Bus 002 Device 002: ID 050d:0002 Belkin Components MachineType: HP-Pavilion FK792AAR-ABA a6600f Papersize: letter PpdFiles: Panasonic-KX-P2135: Epson LQ-850 Foomatic/lq850 (recommended) Stylus-COLOR-880: Epson Stylus Color 880 - CUPS+Gutenprint v5.2.7 Simplified ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-15-generic root=UUID=18eae402-8bbf-4406-b146-8c34f8c73607 ro quiet splash vt.handoff=7 SourcePackage: cups UpgradeStatus: Upgraded to oneiric on 2011-10-15 (76 days ago) dmi.bios.date: 10/24/2008 dmi.bios.vendor: Phoenix Technologies, LTD dmi.bios.version: 5.20 dmi.board.name: Napa dmi.board.vendor: FOXCONN dmi.board.version: HP P/N dmi.chassis.type: 3 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr5.20:bd10/24/2008:svnHP-Pavilion:pnFK792AAR-ABAa6600f:pvr:rvnFOXCONN:rnNapa:rvrHPP/N:cvnHewlett-Packard:ct3:cvr: dmi.product.name: FK792AAR-ABA a6600f dmi.sys.vendor: HP-Pavilion To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/910272/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
