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X11R7.4 - man page for xrandr (x11r4 section 1)

XRANDR(1)			     General Commands Manual				XRANDR(1)

       xrandr - primitive command line interface to RandR extension

       xrandr [-help]  [-display display] [-q] [-v] [--verbose] [--dryrun] [--screen snum] [--q1]
       RandR version 1.3 options
       [--current] [--noprimary]
       Per-output options
       [--panning   widthxheight[+x+y[/track_widthxtrack_height+track_x+track_y[/border_left/bor-
       der_top/border_right/border_bottom]]]]	[--scale   xxy]  [--transform  a,b,c,d,e,f,g,h,i]
       RandR version 1.2 options
       [--prop] [--fb widthxheight] [--fbmm  widthxheight]  [--dpi  dpi]  [--newmode  name  mode]
       [--rmmode name] [--addmode output name] [--delmode output name]
       Per-output options
       [--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]

       RandR version 1.0 and version 1.1 options
       [-o orientation] [-s size] [-r rate] [-x] [-y]

       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 mode and a '*'  after  the  current

       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

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

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

	      Causes xrandr to be more verbose. When used with -q  (or	without  other	options),
	      xrandr  will  display more information about the server state. 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.

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

       -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

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

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

	      Don't define a primary output.

       Per-output options

       --panning    widthxheight[+x+y[/track_widthxtrack_height+track_x+track_y[/border_left/bor-
	      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 matrix multiplied by a coordinate vector of a pixel of the out-
	      put (extended to 3 values) gives the approximate coordinate vector of  a	pixel  in
	      the  graphic  buffer.  Typically, a and e corresponds to the scaling on the X and Y
	      axes, c and f corresponds to the tranlastion on those axes, and g,  h,  and  i  are
	      respectively 0, 0 and 1. It also allows to express a rotation of an angle T with:
		     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.

		     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: hdisp hsyncstart 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 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 preferred
	      mode (or, something close to 96dpi if they have no  preferred  mode).  For  discon-
	      nected but enabled outputs, this will disable them.

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

	      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

       --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-

       --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)  decimal	or  hexadecimal (with a leading 0x) value. Atom properties may be
	      set to any of the valid atoms (see --prop). String properties may  be  set  to  any

       --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 and that switching an output to another crtc doesn't change the crtc  gamma
	      corrections at all.

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.

       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
	      xrandr --addmode VGA 1024x768
	      xrandr --output VGA --mode 1024x768

       Enables panning on a 1600x768 desktop while displaying 1024x768 mode on an  output  called
	      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

       Xrandr(3), cvt(1)

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

X Version 11				   xrandr 1.3.0 				XRANDR(1)

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