Troubleshooting Your Video Card
Video card configuration is handled during the Red Hat Linux installation (see
the Official Red Hat Linux Installation Guide). 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 will want to do this, for example, if you install a new
video card.
 | Note |
|---|
| | The X Configuration Tool will backup your
system's original video configuration file to
/etc/X11/XF86Config.backup in case you need it to
switch back.
|
To run the X Configuration Tool, click
=>
=> . A pop-up window will prompt you
for your root password. You can also start from a shell prompt by typing
the command redhat-config-xfree86, which will then
prompt you to input your root password. If you are working from a shell
prompt and X is not working, redhat-config-xfree86
will attempt to start a minimal X session to allow you to continue your
configuration. Follow the instructions that appear on the
screen. X Configuration Tool will attempt to
automatically configure your video card and monitor settings for
you. Figure 9-6 shows the
Advanced tab for configuring your video devices
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.
