Have this identical problem but being a nube have no real clue how to address.
>From above: "On my R51 connected to the Laserjet4 running WindowsXP, I had to tell Windows to use the USB port to find the Printer, it does that and works. That could be a way to fix it with Linux CUPS." I have same condition except: Windows 2K, processor self assembled (INTELD865PERL MB/1.5GB) LJ4 on Parallel to USB cable HP 890c Deskjet on same cable type. My Ubuntu system is Gutsy. (7.10) HP 890c never (well almost never) fails to identify and jobs will follow it if usb cable is moved to another usb port. HP LJ4 almost never identifies. W2k is rock solid on both printers using these cables so the cables must be passing device ids. Up to now Ive not found many things Windoze can do the Ubuntu could not. This appears to be one of those more noticeable problems. Sometimes a reboot will find the HP4 but usually not. Once found it can be added and functions until a reboot. Have never seen it drop once found until the system is rebooted. Then it will show in the installed printers list but will not print. If this is a bug that has been opened www.cups.org can you point me to the bug report and I'll follow it there. Thanks, Bill lpinfo and lsusb runs attached latest lpinfo -v (it varies from time to time) $ lpinfo -v network socket network beh direct usb://HP/DESKJET%20890C direct hpfax direct hp network http network ipp network lpd direct parallel:/dev/lp0 direct parallel:/dev/lp1 file cups-pdf:/ direct scsi direct hal:///org/freedesktop/Hal/devices/usb_device_ffffffff_ffffffff_noserial_0_printer_noserial direct hal:///org/freedesktop/Hal/devices/usb_device_ffffffff_ffffffff_noserial_1_printer_noserial network smb Coincident lsusb output: $ lsusb Bus 008 Device 009: ID 06e1:0709 ADS Technologies, Inc. Bus 008 Device 008: ID 067b:2305 Prolific Technology, Inc. PL2305 Parallel Port Bus 008 Device 007: ID 047e:2892 Agere Systems, Inc. (Lucent) Bus 008 Device 006: ID 0409:005a NEC Corp. Bus 008 Device 001: ID 0000:0000 Bus 007 Device 005: ID 14cd:6600 Bus 007 Device 004: ID 05e3:0760 Genesys Logic, Inc. Card Reader Bus 007 Device 002: ID 03f0:1705 Hewlett-Packard <my ed: this is a scanner not printer> Bus 007 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 005 Device 001: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 001 Device 003: ID 067b:2305 Prolific Technology, Inc. PL2305 Parallel Port Bus 001 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 Bus 006 Device 004: ID 0802:2800 Mako Technologies, LLC Bus 006 Device 001: ID 0000:0000 -- Printer is not detected properly over USB https://bugs.launchpad.net/bugs/35638 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs