Re: [tlug] USB connection to scanner lost

[Scott Robbins <scottro@example.com>]

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On Wed, Mar 14, 2007 at 12:36:50PM +0900, Dave M G wrote:
> Scott,
> 
> Thanks for replying.

Yes, I deserve it--if you recall, I said that if it worked, I should be
included.  :)

(Massages shoulder strained by patting self on back.)


> 
> >I wonder if this is a permissions issue?...
> >What happens if you run xsane with sudo?
> >  
> 
> I gave this a shot, and there might be something to it. In sudo mode, Xsane 
> opened up and detected the scanner. (It gave a warning saying that it was a bad 
> idea to open it as super user,  but I figured this once would be okay.)


> 
> But then when I tried to acquire a preview from the scanner, Xsane froze up and 
> died.

Now, in this case, I wonder if it's connected with the fact that the
user with sudo has a different $PATH.  It's harder to check in a distro
like Ubuntu--if it were, for example, Slack, I'd say, well log in as
root, startx and see what happens.

Another temporary change you could try is the permissions on whatever it
is in /dev.  I'm stabbing in the dark here, because I'm not familiar
with the O/S.  Hopefully, somone with knowledge will tell you what to
change.  It might be that you should have been made part of the scanner
group and that somehow got changed.  

My guess is that there is either a file similar to FreeBSD's
/etc/devfs.conf where you can set the permissions on the device, or that
there is a group--for example, in ArchLinux, you have to add yourself to
the audio group to use sound.  

> the device was plugged in. But it's all quite fuzzy to me and I'm not sure if 
> the scanner works the same way.

I suspect that it does.  Hopefully, an Ubuntu user will fill in the
blanks here. 


- -- 

Scott Robbins

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