11.10 doesn't see my USB printer

David Shochat david.shochat at gmail.com
Mon Oct 17 23:43:29 UTC 2011


Ok, I've gathered more information, based on the suggested checks in
https://wiki.ubuntu.com/DebuggingPrintingProblems.

#2:
$ lsmod | grep usb
usb_storage            44173  0

#3/4: Here's what gets added to /var/log/syslog when the printer is
either turned on or plugged back in after being unplugged:
Oct 17 19:22:45 gateway kernel: [ 4544.968057] usb 1-4: new high speed
USB device number 5 using ehci_hcd
Oct 17 19:22:45 gateway mtp-probe: checking bus 1, device 5:
"/sys/devices/pci0000:00/0000:00:1d.7/usb1/1-4"
Oct 17 19:22:45 gateway kernel: [ 4545.101917] scsi9 : usb-storage 1-4:1.0
Oct 17 19:22:45 gateway mtp-probe: bus: 1, device: 5 was not an MTP device
Oct 17 19:22:45 gateway udev-configure-printer: add
/devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4:1.1
Oct 17 19:22:45 gateway udev-configure-printer: device devpath is
/devices/pci0000:00/0000:00:1d.7/usb1/1-4
Oct 17 19:22:45 gateway udev-configure-printer: Device vendor/product
is 04B8:0803
Oct 17 19:22:45 gateway udev-configure-printer: failed to claim interface 0
Oct 17 19:22:46 gateway kernel: [ 4546.824413] scsi 9:0:0:0:
Direct-Access     EPSON    Stylus Storage   1.00 PQ: 0 ANSI: 2
Oct 17 19:22:46 gateway kernel: [ 4546.829110] sd 9:0:0:0: Attached
scsi generic sg2 type 0
Oct 17 19:22:46 gateway kernel: [ 4546.843632] sd 9:0:0:0: [sdb]
Attached SCSI removable disk

Sounds to me like it gave up interpreting it as a printer and decided
to call it a storage device.

#6
$ lsusb | grep Epson
Bus 001 Device 005: ID 04b8:0803 Seiko Epson Corp. Printer (Composite Device)

#7
$ ls -l /dev/usb/lp*
ls: cannot access /dev/usb/lp*: No such file or directory
$ ls -l /dev/bus/usb/*/*
crw-rw-r-- 1 root lp   189,   4 2011-10-17 19:22 /dev/bus/usb/001/005
(only included the relevant line)

I think we can stop there. Anybody out there who knows something about udev?
I guess I'll try to file a bug report. Some other folks are having the
same or similar problem. Anyway, it doesn't look like CUPS is to blame
after all. It's lower-level than that.
-- David




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