[cups.development] CUPS not detect the USB printer connected

[Michael Sweet]

You need to check the permissions of the /dev/usb/* files.

On Sep 2, 2010, at 7:25 AM, Senthil Murugan wrote:

> Thanks Michael for quick input. OpenWrt for embedded device not having all the users in my config. I have only root user and admin user. I have root permission for the /usr/lib/cups/backend/usb. owner and group permission also for user root. I login as a root and executes lpinfo -v. its shows only 5 devices. Same time when i change the directory /usr/lib/cups/backend/ run "usb" i could able to see the printer details including serial number.
> 
> Thanks,
> Senthil
> 
>> Sounds like a permissions problem - the USB backend runs as the "lp" =
>> user by default, so the USB device files will need to be writable by =
>> "lp" or have the appropriate group with group write enabled.
>> 
>> On Sep 1, 2010, at 6:06 AM, Senthil Murugan wrote:
>> 
>>> Hi Team,
>>> =20
>>> I'm working on the embedded system with OpenWrt plus CUPS 1.3.10. =
>> lpinfo -v not listing my usb printer connected. I could see the device =
>> connected in /proc/bus/usb/devices & /usr/share/cups/backend/usb also =
>> shows the printer connected. But my lpinfo -v command shows always 5 =
>> other devices (http, ipp, socket, lpd & scsi).
>>> =20
>>> went through some extend of debug by enabling DEBUG option in code =
>> (debug.h). when i enable DEBUG option lpinfo -v hangs.
>>> =20
>>> Looking experts input to resolve my problem.
>>> =20
>>> Thanks,
>>> Senthil
>>> _______________________________________________
>>> cups-dev mailing list
>>> cups-dev at easysw.com
>>> http://lists.easysw.com/mailman/listinfo/cups-dev
>> 
>> ________________________________________________________________________
>> Michael Sweet, Senior Printing System Engineer, PWG Chair
>> 
>> 
>> 
>> 
> 
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________________________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair