Xerox WC PE120 Series User Manual page 212

Problem
I can't print when I
installed both Linux
Print Package (LPP) and
MFP driver on the same
machine
simultaneously.
Can't scan via Gimp
Front-end.
I encounter error
"Cannot open MFP port
device file" when
printing a document.
9.32
Troubleshooting
Possible Cause and Solution
• Since both Linux Printer Package and MFP driver make a
symbolic link to "lpr" printing command, which is
commonly used on Unix clones, it is not recommended to
use both package on the same machine.
• If you still want to use both packages simultaneously,
please install the LPP first.
• If you want to uninstall only one of them, please uninstall
both packages and install that one you want to use again.
• If you don't want to uninstall MFP driver and install it
again, you may make the necessary symbolic link yourself.
Please, log in as root user and invoke the following
command:
ln -sf /usr/local/bin/xerox/slpr /usr/bin/lpr
• Check if Gimp Front-end has "Xsane:Device dialog.." on the
"Acquire" menu. If not, you should install Xsane plug-in for
Gimp on the your computer. You can find Xsane plug-in
package for Gimp on Linux distribution CD or Gimp home
page. For the detail information, refer to the Help for Linux
distribution CD or Gimp Front-end application.
If you wish to use other kind of scan application, refer to the
Help for application.
Please avoid changing print job parameters (via SLPR utility,
for example) while a print job is in progress. Known versions
of CUPS server break the print job whenever print options
are changed and then try to restart the job from the
beginning. Since Linux MFP driver locks MFP port while
printing, the abrupt termination of the driver keeps the port
locked and therefore unavailable for subsequent print jobs. If
this situation occurred, please, try to release the MFP port.