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XRANDR(1)										XRANDR(1)

NAME
       xrandr - primitive command line interface to RandR extension

SYNOPSIS
       xrandr [-help]  [-display display] [-q] [-v] [--verbose] [--dryrun] [--screen snum] [--q1]
       [--q12]	  [--current]	 [--noprimary]	  [--panning	 widthxheight[+x+y[/track_widthx-
       track_height+track_x+track_y[/border_left/border_top/border_right/border_bottom]]]]
       [--scale xxy] [--scale-from  wxh]  [--transform	a,b,c,d,e,f,g,h,i]  [--primary]  [--prop]
       [--fb  widthxheight]  [--fbmm  widthxheight]  [--dpi  dpi] [--newmode name mode] [--rmmode
       name] [--addmode output name] [--delmode output name] [--output output]	[--auto]  [--mode
       mode]  [--preferred]  [--pos  xxy] [--rate rate] [--reflect reflection] [--rotate orienta-
       tion] [--left-of output] [--right-of output] [--above output] [--below output]  [--same-as
       output]	[--set	property value] [--off] [--crtc crtc] [--gamma red:green:blue] [--bright-
       ness brightness] [-o orientation] [-s size] [-r rate] [-x] [-y] [--listproviders]  [--set-
       provideroutputsource provider source] [--setprovideroffloadsink provider sink]

DESCRIPTION
       Xrandr is used to set the size, orientation and/or reflection of the outputs for a screen.
       It can also set the screen size.

       If invoked without any option, it will dump the state of the outputs, showing the existing
       modes  for  each of them, with a '+' after the preferred modes and a '*' after the current
       mode.

       There are a few global options. Other options modify the last output that is specified  in
       earlier	parameters in the command line. Multiple outputs may be modified at the same time
       by passing multiple --output options followed immediately by their corresponding modifying
       options.

       -help  Print out a summary of the usage and exit.

       -v, --version
	      Print out the RandR version reported by the X server and exit.

       --verbose
	      Causes  xrandr  to  be  more verbose. When used with -q (or without other options),
	      xrandr will display more information about the server state. Please note	that  the
	      gamma  and  brightness  informations  are only approximations of the complete color
	      profile stored in the server. When used along with  options  that  reconfigure  the
	      system, progress will be reported while executing the configuration changes.

       -q, --query
	      When this option is present, or when no configuration changes are requested, xrandr
	      will display the current state of the system.

       --dryrun
	      Performs all the actions specified except that no changes are made.

       --nograb
	      Apply the modifications without grabbing the  screen.  It  avoids  to  block  other
	      applications  during  the  update  but  it  might also cause some applications that
	      detect screen resize to receive old values.

       -d, -display name
	      This option selects the X display to use. Note this refers to the X screen abstrac-
	      tion, not the monitor (or output).

       --screen snum
	      This  option  selects  which screen to manipulate. Note this refers to the X screen
	      abstraction, not the monitor (or output).

       --q1   Forces the usage of the RandR version 1.1 protocol, even if  a  higher  version  is
	      available.

       --q12  Forces  the  usage  of the RandR version 1.2 protocol, even if the display does not
	      report it as supported or a higher version is available.

RandR version 1.4 options
       Options for RandR 1.4 are used as a superset of the options for RandR 1.3.

       --listproviders
	      Report information about the providers available.

       --setprovideroutputsource provider source
	      Set source as the source of display output images for provider.  This is only  pos-
	      sible  if  source and provider have the Source Output and Sink Output capabilities,
	      respectively.

       --setprovideroffloadsink provider sink
	      Set provider as a render offload	device	for  sink.   This  is  only  possible  if
	      provider	and  sink  have the Source Offload and Sink Offload capabilities, respec-
	      tively.

RandR version 1.3 options
       Options for RandR 1.3 are used as a superset of the options for RandR 1.2.

       --current
	      Return the current screen configuration, without polling for hardware changes.

       --noprimary
	      Don't define a primary output.

       Per-output options

       --panning    widthxheight[+x+y[/track_widthxtrack_height+track_x+track_y[/border_left/bor-
       der_top/border_right/border_bottom]]]
	      This  option  sets the panning parameters.  As soon as panning is enabled, the CRTC
	      position can change with every pointer move.  The first four parameters specify the
	      total  panning area, the next four the pointer tracking area (which defaults to the
	      same area). The last four parameters specify the border and default to 0.  A  width
	      or height set to zero disables panning on the according axis. You typically have to
	      set the screen size with --fb simultaneously.

       --transform a,b,c,d,e,f,g,h,i
	      Specifies a transformation matrix to apply on the output. Automatically a  bilinear
	      filter is selected.  The mathematical form corresponds to:
		     a b c
		     d e f
		     g h i
	      The  transformation  is  based on homogeneous coordinates. The matrix multiplied by
	      the coordinate vector of a pixel of the output  gives  the  transformed  coordinate
	      vector  of  a pixel in the graphic buffer.  More precisely, the vector (x y) of the
	      output pixel is extended to 3 values (x y w), with 1 as the w coordinate and multi-
	      plied against the matrix. The final device coordinates of the pixel are then calcu-
	      lated with the so-called homogenic division by the transformed  w  coordinate.   In
	      other words, the device coordinates (x' y') of the transformed pixel are:
		     x' = (ax + by + c) / w'   and
		     y' = (dx + ey + f) / w'   ,
		     with  w' = (gx + hy + i)  .
	      Typically,  a  and e corresponds to the scaling on the X and Y axes, c and f corre-
	      sponds to the translation on those axes, and g, h, and i are respectively 0, 0  and
	      1. The matrix can also be used to express more complex transformations such as key-
	      stone correction, or rotation.  For a rotation of an angle T, this formula  can  be
	      used:
		     cos T  -sin T   0
		     sin T   cos T   0
		      0       0      1
	      As  a  special argument, instead of passing a matrix, one can pass the string none,
	      in which case the default values are used (a unit matrix without filter).

       --scale xxy
	      Changes the dimensions of the output picture. Values superior to 1 will lead  to	a
	      compressed  screen (screen dimension bigger than the dimension of the output mode),
	      and values below 1 leads to a zoom in on the output.  This  option  is  actually	a
	      shortcut version of the --transform option.

       --scale-from wxh
	      Specifies the size in pixels of the area of the framebuffer to be displayed on this
	      output.  This option is actually a shortcut version of the --transform option.

       --primary
	      Set the output as primary.  It will be sorted first in Xinerama and RANDR  geometry
	      requests.

RandR version 1.2 options
       These options are only available for X server supporting RandR version 1.2 or newer.

       --prop, --properties
	      This  option  causes  xrandr to display the contents of properties for each output.
	      --verbose also enables --prop.

       --fb widthxheight
	      Reconfigures the screen to the specified size. All  configured  monitors	must  fit
	      within  this  size.  When this option is not provided, xrandr computes the smallest
	      screen size that will hold the set of configured outputs; this  option  provides	a
	      way to override that behaviour.

       --fbmm widthxheight
	      Sets  the  reported  values  for	the physical size of the screen. Normally, xrandr
	      resets the reported physical size values to keep the DPI constant.  This	overrides
	      that computation.

       --dpi dpi
	      This  also sets the reported physical size values of the screen, it uses the speci-
	      fied DPI value to compute an appropriate physical size using  whatever  pixel  size
	      will be set.

       --newmode name mode
	      New  modelines  can  be added to the server and then associated with outputs.  This
	      option does the former. The  mode  is  specified	using  the  ModeLine  syntax  for
	      xorg.conf:  clock hdisp hsyncstart hsyncend htotal vdisp vsyncstart vsyncend vtotal
	      flags. flags can be zero or more of +HSync, -HSync, +VSync, -VSync, Interlace, Dou-
	      bleScan,	CSync, +CSync, -CSync. Several tools permit to compute the usual modeline
	      from a height, width, and refresh rate, for instance you can use cvt.

       --rmmode name
	      This removes a mode from the server if it is otherwise unused.

       --addmode output name
	      Add a mode to the set of valid modes for an output.

       --delmode output name
	      Remove a mode from the set of valid modes for an output.

       Per-output options

       --output output
	      Selects an output to reconfigure. Use either the name of the output or the XID.

       --auto For connected but disabled outputs, this will enable them using  their  first  pre-
	      ferred mode (or, something close to 96dpi if they have no preferred mode). For dis-
	      connected but enabled outputs, this will disable them.

       --mode mode
	      This selects a mode. Use either the name or the XID for mode

       --preferred
	      This selects the same mode as --auto, but it doesn't automatically enable  or  dis-
	      able the output.

       --pos xxy
	      Position	the  output within the screen using pixel coordinates. In case reflection
	      or rotation is applied, the translation is applied after the effects.

       --rate rate
	      This marks a preference for refresh rates close to the specified value, when multi-
	      ple  modes  have	the  same name, this will select the one with the nearest refresh
	      rate.

       --reflect reflection
	      Reflection can be one of 'normal' 'x', 'y' or 'xy'. This causes the output contents
	      to be reflected across the specified axes.

       --rotate rotation
	      Rotation	can  be  one  of 'normal', 'left', 'right' or 'inverted'. This causes the
	      output contents to be rotated in	the  specified	direction.  'right'  specifies	a
	      clockwise  rotation  of  the picture and 'left' specifies a counter-clockwise rota-
	      tion.

       --left-of, --right-of, --above, --below, --same-as another-output
	      Use one of these options to position the output relative to the position of another
	      output.  This  allows convenient tiling of outputs within the screen.  The position
	      is always computed relative to the new position of the other output, so it  is  not
	      valid to say --output a --left-of b --output b --left-of a.

       --set property value
	      Sets  an	output	property.  Integer  properties	may  be specified as a valid (see
	      --prop) comma-separated list of decimal or hexadecimal (with a leading 0x)  values.
	      Atom  properties may be set to any of the valid atoms (see --prop).  String proper-
	      ties may be set to any value.

       --off  Disables the output.

       --crtc crtc
	      Uses the specified crtc (either as an index in the list of CRTCs or XID).  In  nor-
	      mal  usage,  this  option  is not required as xrandr tries to make sensible choices
	      about which crtc to use with each output. When that fails  for  some  reason,  this
	      option can override the normal selection.

       --gamma red:green:blue
	      Set  the	specified floating point values as gamma correction on the crtc currently
	      attached to this output. Note that you cannot get two different values  for  cloned
	      outputs  (i.e.:  which share the same crtc) and that switching an output to another
	      crtc doesn't change the crtc gamma corrections at all.

       --brightness brightness
	      Multiply the gamma values on the crtc currently attached to the output to specified
	      floating value. Useful for overly bright or overly dim outputs.  However, this is a
	      software only modification, if your hardware has support	to  actually  change  the
	      brightness, you will probably prefer to use xbacklight.

RandR version 1.1 options
       These  options are available for X servers supporting RandR version 1.1 or older. They are
       still valid for newer X servers, but they don't interact sensibly with version 1.2 options
       on the same command line.

       -s, --size size-index or --size widthxheight
	      This sets the screen size, either matching by size or using the index into the list
	      of available sizes.

       -r, --rate, --refresh rate
	      This sets the refresh rate closest to the specified value.

       -o, --orientation rotation
	      This specifies the orientation of the screen, and can be one of  normal,	inverted,
	      left or right.

       -x     Reflect across the X axis.

       -y     Reflect across the Y axis.

EXAMPLES
       Sets  an  output  called LVDS to its preferred mode, and on its right put an output called
       VGA to preferred mode of a screen which has been physically rotated clockwise:
	      xrandr --output LVDS --auto --rotate normal --pos 0x0 --output VGA --auto  --rotate
	      left --right-of LVDS

       Forces to use a 1024x768 mode on an output called VGA:
	      xrandr  --newmode  "1024x768"  63.50   1024  1072 1176 1328  768 771 775 798 -hsync
	      +vsync
	      xrandr --addmode VGA 1024x768
	      xrandr --output VGA --mode 1024x768

       Enables panning on a 1600x768 desktop while displaying 1024x768 mode on an  output  called
       VGA:
	      xrandr --fb 1600x768 --output VGA --mode 1024x768 --panning 1600x0

       Have  one  small 1280x800 LVDS screen showing a small version of a huge 3200x2000 desktop,
       and have a big VGA screen display the surrounding of the mouse at normal size.
	      xrandr --fb 3200x2000 --output LVDS --scale 2.5x2.5 --output VGA --pos  0x0  --pan-
	      ning 3200x2000+0+0/3200x2000+0+0/64/64/64/64

       Displays  the VGA output in trapezoid shape so that it is keystone corrected when the pro-
       jector is slightly above the screen:
	      xrandr --fb 1024x768 --output VGA --transform 1.24,0.16,-124,0,1.24,0,0,0.000316,1

SEE ALSO
       Xrandr(3), cvt(1), xkeystone(1), xbacklight(1)

AUTHORS
       Keith Packard, Open Source Technology Center, Intel Corporation.   and  Jim  Gettys,  Cam-
       bridge Research Laboratory, HP Labs, HP.

X Version 11				   xrandr 1.4.0 				XRANDR(1)
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