On Sunday 02 July 2006 16:50, Jan-Espen Pettersen wrote:
> Rainer Heesen wrote:
> >         USB port busy; will retry in 30 seconds...
>
> fstat | grep ulpt0
>
> .. will reveal which process is eventually having ulpt0 open, and
> causing 'device busy'.
> The usb backend seems to get this error while trying to open /dev/ulpt0.
>
> Please also make sure that either the cups user or cups group has read
> and write access to /dev/ulpt0.
> I think most people use permissions like: root:cups 0660 (-rw-rw----).
>
> Jan-Espen Pettersen

Also make sure that /vad/cache/cups is writeable by group cups. 

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