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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_widthxtrack_height+track_x+track_y[/bor-
       der_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 orientation] [--left-of
       output] [--right-of output] [--above output] [--below output]  [--same-
       as  output]  [--set  property  value]  [--off]  [--crtc	crtc] [--gamma
       red:green:blue] [--brightness brightness] [-o  orientation]  [-s	 size]
       [-r   rate]   [-x]  [-y]	 [--listproviders]  [--setprovideroutputsource
       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  pre-
       ferred 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 informa-
	      tions are	only approximations  of	 the  complete	color  profile
	      stored  in  the server. When used	along with options that	recon-
	      figure 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 sys-
	      tem.

       --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 abstraction,	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 possible if source and  provider  have  the	Source
	      Output and Sink Output capabilities, respectively.  If source is
	      0x0, then	provider  is  disconnected  from  its  current	output
	      source.

       --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,  respectively.   If  sink	is  0x0,  then
	      provider is disconnected from its	current	render offload sink.

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_widthx-
       track_height+track_x+track_y[/border_left/border_top/border_right/bor-
       der_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. Auto-
	      matically	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 coordi-
	      nate and multiplied against the matrix. The final	device coordi-
	      nates  of	 the  pixel  are  then	calculated  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 corresponds 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 keystone
	      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  ver-
	      sion 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 pro-
	      vided, 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 specified DPI	value to compute an appropriate	physi-
	      cal 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	speci-
	      fied using the ModeLine syntax for xorg.conf: clock hdisp	hsync-
	      start  hsyncend  htotal  vdisp vsyncstart	vsyncend vtotal	flags.
	      flags can	be zero	or more	of  +HSync,  -HSync,  +VSync,  -VSync,
	      Interlace, DoubleScan, CSync, +CSync, -CSync. Several tools per-
	      mit 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 preferred mode (or, something	close to 96dpi if they
	      have no preferred	mode). For disconnected	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 automati-
	      cally enable or disable 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 multiple 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 rotation.

       --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 rel-
	      ative  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 hexadec-
	      imal (with a leading 0x) values.	Atom properties	may be set  to
	      any  of  the valid atoms (see --prop).  String properties	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 normal 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 over-
	      ride 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  modifica-
	      tion,  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 phys-
       ically 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	--panning 3200x2000+0+0/3200x2000+0+0/64/64/64/64

       Displays	 the VGA output	in trapezoid shape so that it is keystone cor-
       rected when the projector 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, Cambridge Research Laboratory, HP Labs, HP.

X Version 11			 xrandr	1.4.3			     XRANDR(1)

NAME | SYNOPSIS | DESCRIPTION | RandR version 1.4 options | RandR version 1.3 options | RandR version 1.2 options | RandR version 1.1 options | EXAMPLES | SEE ALSO | AUTHORS

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