HPLIP Troubleshooting - Printing

# HP Linux Imaging and Printing (HPLIP)

About Features Screenshots FAQs Setup and Installation System Requirements Supported Devices Download HPLIP Installation Instructions Usage and Support Mailing Lists How-Tos Troubleshooting Release Notes Resources Technical Documentation Sourceforge Project Page Software License Other Support Information About HPLIP Contacts Home > Troubleshooting > Printing | # Printing Troubleshooting Issue 1: Print jobs are failing on my 4x6 Photosmart printer. Solution: For printers that only support 4x6 page sizes, make sure the page size setting is correct in the CUPS queue. The default page setting may not be correct and print jobs will fail. Issue 2: I'd like to view the CUPS error log for debugging and troubleshooting purposes. Solution: Edit the /etc/cups/cupsd.conf file, find the section "loglevel" change "info" to "debug" save and exit then restart cups
    # /etc/init.d/cups restart
or for Ubuntu
    $ sudo /etc/init.d/cupsys restart
then enter this command to view the log
    tail -f /var/log/cups/error_log
With the CUPS LogLevel set to debug, the CUPS error_log will show all programs that are executed during the print job. Generally there are two data paths taken during a print job; 1) HPIJS driver path 2) Postscript driver path. Both data paths will use the "hp" backend. For the HPIJS path, look for errors near the ghostscript command (gs) command. The gs command will invoke the HPIJS driver. For the Postscript path, there will be no gs command. Postscript will be passed directly to the "hp" backend and then to the printer. Issue 3: When printing Letter media, the bottom row is printed incompletely. Solution: Some applications use enscript for printing, make the following changes to /etc/enscript.conf. This tip came from Patricio Paez. From:
    DefaultMedia = Letter
To:
    DefaultMedia = Letterdj
Last update: Tue May 23 16:17:40 2006; HPLIP Version: 1.6.9