10.4. Troubleshooting Your Video Card
Video card configuration is handled during the Red Hat Linux installation
(refer to the Red Hat Linux Installation Guide for more
information). However, if you did not choose to configure a video card
at that time, or if you need to reconfigure your settings, you can use
the X Configuration Tool utility. You should do
this, for example, if you install a new video card.
 | Note |
|---|
| | The X Configuration Tool backs up your
system's original video configuration file to
/etc/X11/XF86Config.backup in case you need it to
switch back to a previous configuration.
|
To run the X Configuration Tool, click
=> => . A pop-up
window prompts you for your root password. You can also start from a
shell prompt by typing the command
redhat-config-xfree86, which then prompt you to input
your root password. If you are working from a shell prompt and X is not
working, redhat-config-xfree86 attempts to start a
minimal X session to allow you to continue your configuration. Follow
the instructions that appear on the
screen. X Configuration Tool attempts to
automatically configure your video card and monitor settings for
you. Figure 10-6 shows the
Advanced tab for configuring your video device
manually.
To configure your monitor manually, click the
Advanced tab, then click the
Configure... button next to the Monitor
Type entry. A pop-up window will display a list of monitor
models. Choose your model and click OK. You can
also let X Configuration Tool probe your monitor
for the correct model and vertical/horizontal frequency settings.
To configure your video card manually, click the
Advanced tab, then click the
Configure... button next to the Video
Card entry. A pop-up window will display a list of video card
models. Choose your model and click OK. You can
also let X Configuration Tool probe your video
card for the correct model and settings by clicking the Probe
Videocard button.
When you have finished reconfiguring your video card and monitor,
you should be able to start an X session and enjoy your graphical
desktop environment.
