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xvidtune - video mode tuner for XFree86
xvidtune [ -show | -prev | -next | -unlock ] [ -toolkitoption ... ]
Xvidtune is a client interface to the XFree86 X server video mode extension (XFree86-Vid-
When given one of the non-toolkit options, xvidtune provides a command line interface to
either switch the video mode.
Without any options (or with only toolkit options) it presents the user with various but-
tons and sliders that can be used to interactively adjust existing video modes. It will
also print the settings in a format suitable for inclusion in an XF86Config file.
Normally the XFree86 X servers only allow changes to be made with the XFree86-VidModeEx-
tension from clients connected via a local connection type.
Note: The original mode settings can be restored by pressing the `R' key, and this can be
used to restore a stable screen in situations where the screen becomes unreadable.
The available buttons are:
Adjust the video mode so that the display will be moved in the appropriate
Adjust the video mode so that the display size is altered appropriately.
Quit Exit the program.
Apply Adjust the current video mode to match the selected settings.
Auto Cause the Up/Down/Right/Left, Wider/Narrower/Shorter/Taller, Restore, and the
special S3 buttons to be applied immediately. This button can be toggled.
Test Temporarily switch to the selected settings.
Restore Return the settings to their original values.
Fetch Query the server for its current settings.
Show Print the currently selected settings to stdout in XF86Config "Modeline" format.
The primary selection is similarly set.
Next Switch the Xserver to the next video mode.
Prev Switch the Xserver to the previous video mode.
For some S3-based cards (964 and 968) the following are also available:
Change the VCLK invert/non-invert state.
EarlySC Change the Early SC state. This affects screen wrapping.
Set the blank delay values. This affects screen wrapping. Acceptable values
are in the range 0-7. The values may be incremented or decremented with the `+'
and `-' buttons, or by pressing the `+' or `-' keys in the text field.
For S3-864/868 based cards InvertVCLK and BlankDelay1 may be useful. For S3 Trio32/Trio64
cards only InvertVCLK is available. At the moment there are no default settings available
for these chips in the video mode extension and thus this feature is disabled in xvidtune.
It can be enabled by setting any of the optional S3 commands in the screen section of
XF86Config, e.g. using
blank_delay "*" 0
xvidtune accepts the standard X Toolkit command line options as well as the following:
-show Print the current settings to stdout in XF86Config "Modeline" format and exit.
-prev Switch the Xserver to the previous video mode.
-next Switch the Xserver to the next video mode.
-unlock Normally, xvidtune will disable the switching of video modes via hot-keys while
it is running. If for some reason the program did not exit cleanly and they are
still disabled, the program can be re-run with this option to re-enable the mode
switching key combinations.
Kaleb S. Keithley, X Consortium.
Additions and modifications by Jon Tombs, David Dawes, and Joe Moss.
X Error handling, i.e. when the server does not allow xvidtune clients to write new modes,
could be better.
XFree86 Version Version 4.3.0 xvidtune(1)
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