Common Linux Problems - Samsung CLP-300N Service Manual

Troubleshooting

7.7 Common Linux Problems

Problem
I can't change settings in the
configuration tool.
I am using the KDE desktop but
the configuration tool and LLPR
won't start.
I just installed this package but
can't find entries in the KDE/
Gnome menus.
I get a "Some options are not
selected" error message while
editing the printer settings.
I can't make a printer the system
default.
The N-up setting does not work
correctly for some of my
documents.
I am using BSD lpr (Slackware,
Debian, older distributions) and
some options chosen in LLPR
don't seem to take effect.
Service Manual
7-12
Possible Cause and Solution
You need to have administrator privileges to be able to change global
settings.
You may not have the GTK libraries installed. These usually come with most
Linux distributions, but you may have to install them manually. Refer to your
distribution's installation manual for more details about installing additional
packages.
Some versions of the KDE or GNOME desktop environments may require
that you restart your session for the changes to take effect.
Some printers have conflicting settings, meaning that some settings for two
options can't be selected at the same time. When you change a setting and
the Printer Package detects such a conflict, the conflicting option is changed
to a "No Choice" value. You have to choose an option that does not conflict
before being able to submit the changes.
In some conditions, it may not be possible to change the default queue. This
happens with some variants of LPRng, especially on recent RedHat systems
that use the "printconf" database of queues.
When using printconf, the /etc./printcap file is automatically refreshed from
the database of printers managed by the system (usually through the "print-
tool" command), and the queues in /etc./printcap.local are appended to the
resulting file. The default queue in LPRng is defined as the first queue in
/etc./printcap, and therefore it is not possible for the Linux Printer Package to
change the default when some queues have otherwise been defined using
printtool.
LPD systems identify the default queue as the one named "lp". Thus, if there
is already a queue by this name, and if it doesn't have an alias, then you
won't be able to change the default. To work around this, you can either
delete the queue or rename it by manually editing the /etc./printcap file.
The N-up feature is achieved through post-processing of the PostScript data
that is sent to the printing system. However, such post-processing can
only be adequately achieved if the PostScript data conforms to the Adobe
Document Structing Conventions. Problems may arise when using N-up
and other features that rely on post-processing if the document being printed
isn't compliant.
Legacy BSD lpr systems have a hard limitation on the length of the option
string that can be passed to the printing system. As such, if you selected a
number of different options, you may have exceeded the length of the
options and some of your choices won't be passed to the programs
responsible for implementing them. Try to select fewer options that deviate
from the defaults, to save on memory usage.
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