General/Other Troubleshooting

Issue 1: I am seeing messages like "Unable to find GUI for username..." and "No GUI available" in the system log.

Solution:

These are normal and should not cause any concerns.

Issue 2: How do I check the syslog for HPLIP system errors?

Solution:

With superuser (su/sudo) privileges, use the following command to view the syslog. Look for any errors during the time of the failure.

# tail -f /var/log/messages

Issue 3: When I go to login to the CUPS web interface (http://localhost:631) it asks for my root password--and my root password doesn't give me access.

Solution:

First verify with your distribution the best way to install your printer.

To enable the CUPS web interface follow these directions.

Edit the cupsd.conf file.

# gedit /etc/cups/cupsd.conf

Find this section:

# Restrict access to the admin pages...
<Location /admin>
#Order allow,deny
#Allow localhost
</Location>

Change it to:

# Restrict access to the admin pages...
<Location /admin>
Order allow,deny
Allow localhost
</Location>

Save/Exit, restart CUPS:

# /etc/init.d/cups restart

for Ubuntu

$ /etc/init.d/cupsys restart

Open your web browser, go to http://localhost:631. Complete the administrative tasks you need to complete.