Installation guide

Appendix C. Troubleshooting Your Installation of Red Hat Enterprise Linux 69
C.4.7. Your Printer Does Not Work
If you are not sure how to set up your printer or are having trouble getting it to work properly, try
using the Printer Configuration Tool.
Type the system-config-printer command at a shell prompt to launch the Printer Configura-
tion Tool. If you are not root, it prompts you for the root password to continue.
C.4.8. Problems with Sound Configuration
If, for some reason, you do not hear sound and know that you do have a sound card installed, you can
run the Sound Card Configuration Tool (system-config-soundcard) utility.
To use the Sound Card Configuration Tool, choose Main Menu => System Settings => Soundcard
Detection. A small text box pops up prompting you for your root password.
You can also type the system-config-soundcard command at a shell prompt to launch the Sound
Card Configuration Tool. If you are not root, it prompts you for the root password to continue.
To run the text-based configuration tool, as root, type sndconfig in a terminal window. Note, the
sndconfig application is not installed by default but can be found on the Red Hat Enterprise Linux
CD-ROMs.
If the Sound Card Configuration Tool does not work (if the sample does not play and you still
do not have audio sounds), there are alternatives, although they are not quite as simple as running
the Sound Card Configuration Tool. You can edit your modules.conf file (this strategy is not
recommended for most new users), or refer to the documentation that came with your sound card for
more information.
C.4.9. Apache-based httpd service/Sendmail Hangs During Startup
If you are having trouble with the Apache-based httpd service or Sendmail hanging at startup, make
sure the following line is in the /etc/hosts file:
127.0.0.1 localhost.localdomain localhost
C.4.10. Trouble with NVIDIA chipset
If you have an NVIDIA chipset and have just updated your kernel, you may experience problems with
the video card, such as not having any video output.
If you experience a similar problem, you should download the latest kernel drivers available for your
NVIDIA chipset. For more information, refer to:
http://www.nvidia.com/view.asp?IO=linux_display_1.0-3123