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[Daniel Drake]

collectif Fossile wrote:
> Hi Vasily
> 
> and thanks for your help and for pointing the problem, although it is 
> not completely solved. As i had already read somewhere on this forum, 
> some root privileges seem to be required to run the device.
>  
> If anyone knows precisely how it works on Ubuntustudio, please let me know

If your permissions allow you access to the devices then you do not need 
root access.

	ls -lR /proc/bus/usb
	ls -lR /dev/bus/usb

(not sure which one your distro uses)

For me:

/dev/bus/usb:
total 0
drwxr-xr-x 2 root root  60 2008-04-06 18:51 001
drwxr-xr-x 2 root root 100 2008-04-06 10:30 002

/dev/bus/usb/001:
total 0
crw-rw-r-- 1 root usb 189, 0 2008-04-06 10:30 001

/dev/bus/usb/002:
total 0
crw-rw-r-- 1 root usb 189, 128 2008-04-06 10:30 001
crw-rw-r-- 1 root usb 189, 129 2008-04-06 10:30 002
crw-rw-r-- 1 root usb 189, 130 2008-04-06 10:30 003
...

So I just need to be in the usb group, then I have rw permissions to the 
devices.

Daniel