[Linux-disciples] CUPS wants a password

[Adam Rosi-Kessel]

What user is cups running as? Creating a new group and adding yourself won't
accomplish anything if it's not the group cups runs as.

Try

ps aux | grep cups

and see what you get.

As far as the /dev/lp0 permissions--if you're using udev, there is a
configuration file, I believe in /etc/udev, that lets you specify the
permissions for device nodes when they are created. I've done this before
but forget the details at the moment.

Who owns /dev/lp0 by default? What are the permissions?

ls -l /dev/lp0

Normally, /dev/lp0 should already be in group lp and group-writable, so if
you are in that group it should be fine.

Incidentally, normally all this printing stuff is now handled by higher
level (i.e. GNOME) functions that make all of this transparent. You
shouldn't really need to be mucking around with this stuff.

Karl Sokol wrote:
> Thanks, but there is no group cups, so I made one and added nahash.  I
> added nahash to lp, but to no avail.
> 
> I have spent some time researching this and am still coming up short.  I
> suppose I do not really need HPLIP, but there is a related annoyance.  I
> cannot print until I set
> 
> nahash at ubuntu:~$ sudo chmod 777 /dev/lp0
> 
> and then it resets after a reboot and I have to do it all over again. 
> This is rather cumbersome.  Where is it getting the idea to reset
> permissions?
> 
> Thanks.
> 
> 
> 
> On 11/3/05, *Adam Rosi-Kessel* < adam at rosi-kessel.org
> <mailto:adam at rosi-kessel.org>> wrote:
> 
>     Try http://adam.rosi-kessel.org/linux
>     <http://adam.rosi-kessel.org/linux>
> 
>     You might also be able to add your user to the proper group--myaybe
>     lp or cups?
> 
>     i.e., adduser nahash cups
> 
>     Karl Sokol wrote:
>     > I installed HPLIP toolbox.  It recognizes my printer (HP Deskjet
>     842-c),
>     > but when I go to do anything a CUPS password dialogue comes up.  The
>     > problem is that my username and password do not work.  I read
>     somewhere
>     > that you have to use your root account.  Well, just typing root
>     and then
>     > using the password that I use for sudo does not work either. I think
>     > that this might be because of Ubuntu's default of not allowing root
>     > login (which came up previously on this list, I think).
>     >
>     > The following does not seem to work:
>     >
>     > nahash at ubuntu:~$ sudo lppasswd nahash
>     > Enter password:
>     > Enter password again:
>     > lppasswd: Unable to open passwd file: Permission denied
>     > nahash at ubuntu:~$
>     >
>     >
>     > --
>     > Grace and Peace,
>     > Karl Sokol
>     >
>     > "They that are bound for heaven must be willing to swim against
>     the stream,
>     > and must do, not as most do, but as the best do."
>     >                                                       -John Wesley's
>     > notes on Joshua 24:15
>     >
>     >
>     >
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> 
> 
> 
> 
> 
> -- 
> Grace and Peace,
> Karl Sokol
> 
> "They that are bound for heaven must be willing to swim against the stream,
> and must do, not as most do, but as the best do."
>                                                       -John Wesley's
> notes on Joshua 24:15
> 
> 
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