USB printer not detected

[Mikael Nilsson]

> Hi!
>
> I'm on Ubuntu Feisty, and I have issues with detection of my USB printer, a Canon PIXMA MP600. I'm told the IP4200 drivers should work, but lpinfo -v tells me:
>
> network socket
> network beh
> network bluetooth
> direct hp:/no_device_found
> network http
> network ipp
> network lpd
> network smb
>
> while "for f in /usr/lib/cups/backend/*; do $f; done" gives
>
> network beh "Unknown" "Backend Error Handler"
> network bluetooth "Unknown" "Bluetooth printer"
> direct hp:/no_device_found "Unknown" "hp no_device_found"
> network http "Unknown" "Internet Printing Protocol (http)"
> network ipp "Unknown" "Internet Printing Protocol (ipp)"
> bash: /usr/lib/cups/backend/lpd: Åtkomst nekas
> network smb "Unknown" "Windows Printer via SAMBA"
> network socket "Unknown" "AppSocket/HP JetDirect"
> direct usb://Canon/MP600 "Canon MP600" "Canon MP600 USB #1" "MFG:Canon;CMD:BJL,BJRaster3,BSCCe;SOJ:TXT01;MDL:MP600;CLS:PRINTER;DES:Canon MP600;VER:1.04;STA:10;FSI:03;HRI:OTH;MSI:DAT,E3;"
>
> Of course, neither the Web interface nor the GNOME printer applet can add the printer.
>
> How come the USB printer is detected by the backend but not by lpinfo???

In the log:

D [29/Jan/2007:17:42:09 +0100] [cups-deviced] Added device "beh"...
D [29/Jan/2007:17:42:09 +0100] [cups-deviced] Added device "bluetooth"...
D [29/Jan/2007:17:42:09 +0100] [cups-deviced] Added device "hp:/no_device_found"...
D [29/Jan/2007:17:42:09 +0100] [cups-deviced] Added device "smb"...
D [29/Jan/2007:17:42:09 +0100] [cups-deviced] Added device "ipp"...
D [29/Jan/2007:17:42:09 +0100] [cups-deviced] Added device "http"...
D [29/Jan/2007:17:42:09 +0100] [cups-deviced] Added device "lpd"...
D [29/Jan/2007:17:42:09 +0100] [cups-deviced] Added device "socket"...


BUT, using /usr/lib/cups/daemon/cups-deviced 1 0 7 requested-attributes=all


DEBUG: [cups-deviced] Added device "beh"...
DEBUG: [cups-deviced] Added device "bluetooth"...
DEBUG: [cups-deviced] Added device "hp:/no_device_found"...
DEBUG: [cups-deviced] Added device "smb"...
DEBUG: [cups-deviced] Added device "ipp"...
DEBUG: [cups-deviced] Added device "http"...
sh: /usr/lib/cups/backend/lpd: Permission denied
DEBUG: [cups-deviced] Added device "socket"...
DEBUG: [cups-deviced] Added device "usb://Canon/MP600"...

W-H-Y.... ?