Quick-Start Guide to XFree86 Setup : Running `xvidtune`
Previous: Fixing the XF86Config file
Next: Troubleshooting

## 6. Running `xvidtune`

If you need to make adjustments to the video display, `xvidtune` is the tool to use.

Simply enter the command `xvidtune` from a shell prompt within an xterm. Read the warning and click on `OK`. Next click on the `Auto` button.

Now click on whatever combination of `Up/Down/Left/Right` `Shorter/Taller/Wider/Narrower` is need to adjust the display to your liking.

If you are using a recent S3-based card there will be some extra buttons and entries at the bottom (InvertVCLK, EarlySC, and Blank Delays). These can help solve problems of the display wrapping around a few pixels.

Once the display has been adjusted properly, press the `show` button to printout the correct `ModeLine` to put in the `XF86Config` to make the server always use the current display settings. To aid in copying this information to your XF86Config file, the modeline is also made the current selection allowing you to just paste it into your editor.

If you would like to adjust your other modes, you can click on the `Next` and `Prev` buttons to switch modes.

When you are through using `xvidtune` simply press on the `Quit` button.

Quick-Start Guide to XFree86 Setup : Running `xvidtune`
Previous: Fixing the XF86Config file
Next: Troubleshooting