VBETOOL man page on OpenMandriva

Man page or keyword search:  
man Server   8135 pages
apropos Keyword Search (all sections)
Output format
OpenMandriva logo
[printable version]

VBETOOL(1)			 User Commands			    VBETOOL(1)

NAME
       vbetool - run real-mode video BIOS code to alter hardware state

SYNOPSIS
       vbetool	 [[vbestate   save|restore]|[vbemode  set|get]|[vgamode]|[dpms
       on|off|standby|suspend|reduced]|[post		  [romfile]]|[vgastate
       on|off]|[vbefp panelid|panelsize|getbrightness|setbrightness|invert]]

DESCRIPTION
       vbetool	uses lrmi in order to run code from the video BIOS. Currently,
       it is able to alter DPMS states,	 save/restore  video  card  state  and
       attempt to initialize the video card from scratch.

OPTIONS
       vbetool takes the following options:

       vbestate
	      vbetool  will  use the VESA 0x4f0f extensions to save or restore
	      hardware state. This will be sent to or read  from  stdin.  This
	      information  is  highly  hardware	 specific  - do not attempt to
	      restore state saved from a different machine. This command  will
	      not  work	 unless	 you  are  at a text console, as it interferes
	      badly with X.

       dpms   vbetool will use the VESA 0x4f10 extensions to alter  the	 power
	      management  state	 of your screen. "On", "off", "standby", "sus‐
	      pend" and "reduced" are acceptable further options and determine
	      which state will be activated.

       vbemode
	      vbetool will get or set the current VESA mode. "get" will return
	      the current mode number on stdout - "set" will set the  mode  to
	      the next argument.

       vgamode
	      vbetool  will  set  the legacy VGA mode to the following numeric
	      argument.

       post   vbetool will attempt to run BIOS code located at c000:0003. This
	      is the code run by the system BIOS at boot in order to intialise
	      the video hardware. Note that on some machines (especially  lap‐
	      tops),  not all of this code is present after system boot - as a
	      result, executing this command may result	 in  undefined	behav‐
	      iour.  This  command must be run from a text console, as it will
	      otherwise interfere with the operation of X. This command	 takes
	      an  optional argument which is the location of a file containing
	      a ROM image. If provided, this image will be mapped to the  c000
	      segment and used instead of the system's video BIOS.

       vgastate
	      vbetool  will  enable or disable the current video card. On most
	      hardware, disabling will cause the hardware to  stop  responding
	      until  it	 is  reenabled.	 You probably don't want to do this if
	      you're using a framebuffer.

       vbefp  vbetool will execute a VESA flat panel interface call.

	      panelid will provide information about the panel

	      panelsize will provide the size of the panel

	      getbrightness will provide the current screen brightness	as  an
	      integer

	      setbrightness accepts an integer as an argument and will set the
	      screen brightness to that

	      invert will invert the colours of the screen

BUGS
       Switching dpms modes may interact badly with X on some systems.

       The vbestate command may behave in strange ways.

       The post command may result in the execution  of	 arbitrary  code  that
       happens	to be lying around in the area where chunks of your video BIOS
       used to be.

       The VESA specification does not require that "vbemode get" provides the
       correct	mode if the current mode was set via some means other than the
       VESA BIOS extensions.

       The VESA flat panel interface ceased development at the proposal stage.
       panelid	and  panelsize will work on many machines, but the other argu‐
       ments are unlikely to be implemented on available hardware.

AUTHOR
       vbetool was written by Matthew Garrett <mjg59@srcf.ucam.org>, based  on
       code   from   read-edid	 by   John   Fremlin  <john@fremlin.de>,  LRMI
       (http://sourceforge.net/projects/lrmi/)		  and		 XFree
       (http://www.xfree86.org).  It  is  released  under the terms of the GNU
       General Public License.

vbetool 0.2		       31 December 2004			    VBETOOL(1)
[top]

List of man pages available for OpenMandriva

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net