xrandr


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

       --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.

       --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.

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:
              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
              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
              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
              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 1.4.1                        XRANDR(1)
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