[K12OSN] CentOS + USB devices

Marc Fromm Marc.Fromm at wwu.edu
Thu May 22 18:17:56 UTC 2008

I'm setting up a new k12ltsp server. Our current server (not setup by
me) has USB printer directly attached to a client and it is setup in
CUPS using Device URI socket://finaid76:9100 since that client is always
logged on with user account finaid76. 

The lts.conf file has an entry
        PRINTER_0_DEVICE        =/dev/usb/lp0
        PRINTER_0_TYPE          = U

Since there are no clear instructions with printers I am duplicating
configurations that currently work.

For USB thumb drives, what is the Fuse group?

-----Original Message-----
From: k12osn-bounces at redhat.com [mailto:k12osn-bounces at redhat.com] On
Behalf Of David Hopkins
Sent: Thursday, May 22, 2008 11:07 AM
To: Support list for open source software in schools.
Subject: Re: [K12OSN] CentOS + USB devices

> Are the usb ports disabled on the client machines in k12ltsp CentOS?
> I have plugged in a usb thumb drive and a printer into a client and
> neither are detected. I plugged the same usb thumb drive into the
> box and it was detected.

They work for me, but users need to be in the Fuse group.

> I added the printer using the CUPS web interface localhots:631.
> I used Device URI: socket://finaid70:9100

Is this correct? Isn't it socket://IP_address_thin_client:9100 or
socket://hostname_of_thin_client:9100 (which are typically 192.168.x.y
and ws###.ltsp for the base install).  We have 80+ printers connected
to thin clients and they work fine but we are using the parallel port
for the printers, not the usb port.

Dave Hopkins

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