Provided by: x11-xserver-utils_7.6+3_amd64 bug

NAME

       xrandr - primitive command line interface to RandR extension

SYNOPSIS

       xrandr [-help]  [-display display] [-q] [-v] [--verbose] [--dryrun] [--screen snum] [--q1]
       [--q12]
       RandR version 1.3 options
       [--current] [--noprimary]
       Per-output options
       [--panning
       widthxheight[+x+y[/track_widthxtrack_height+track_x+track_y[/border_left/border_top/border_right/border_bottom]]]]
       [--scale xxy] [--transform a,b,c,d,e,f,g,h,i] [--primary]
       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] [--brightness brightness]

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

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 mode 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
              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 1.3 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/border_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
              multiplied  against  the matrix. The final device coordinates 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 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
              specified  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,
              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
              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 automatically 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 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
              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 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
              --panning 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
       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.