CentOS 7.0 - man page for xvidtune (centos section 1)

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xvidtune(1)									      xvidtune(1)

       xvidtune - video mode tuner for Xorg

       xvidtune [ -show | -prev | -next | -unlock ] [ -toolkitoption ... ]

       Xvidtune is a client interface to the X server video mode extension (XFree86-VidModeExten-

       When given one of the non-toolkit options, xvidtune provides a command line  interface  to
       either print or 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 xorg.conf file.

       Normally  the  Xorg X servers only allow changes to be made with the XFree86-VidModeExten-
       sion 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 xorg.conf "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
       xorg.conf, 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 xorg.conf "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.

       xrandr(1), Xorg(1), xorg.conf(5).

       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.

X Version 11				  xvidtune 1.0.3			      xvidtune(1)
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