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] [--q12] [--current] [--noprimary] [--panning
       [--scale x[xy]] [--scale-from wxh] [--transform a,b,c,d,e,f,g,h,i]
       [--primary] [--prop] [--fb widthxheight] [--fbmm widthxheight] [--dpi
       dpi] [--dpi from-output] [--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]
       [--listmonitors] [--listactivemonitors] [--setmonitor name geometry
       outputs] [--delmonitor name]

       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.

              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

              Performs all the actions specified except that no changes are

              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

       -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

RandR version 1.5 options
       Options for RandR 1.5 are used as a superset of the options for RandR

              Report information about all defined monitors.

              Report information about currently active monitors.

       --setmonitor name geometry outputs
              Define a new monitor with the given geometry and associated to
              the given outputs.  The output list is either the keyword none
              or a comma-separated list of outputs.  The geometry is either
              the keyword auto, in which case the monitor will automatically
              track the geometry of the associated outputs, or a manual
              specification in the form w/mmwxh/mmh+x+y where w, h, x, y are
              in pixels and mmw, mmh are the physical dimensions of the

       --delmonitor name
              Delete the given user-defined monitor.

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

              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

       --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

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

              Don't define a primary output.

       Per-output options

              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.  A
              bilinear filter is selected automatically unless the --filter
              parameter is also specified.  The mathematical form corresponds
                     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
                     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).

       --filter filtermode
              Chooses the scaling filter method to be applied when the screen
              is scaled or transformed.  Can be either 'bilinear' or

       --scale x[xy]
              Changes the dimensions of the output picture.  If the y value is
              omitted, the x value will be used for both dimensions.  Values
              larger than 1 lead to a compressed screen (screen dimension
              bigger than the dimension of the output mode), and values less
              than 1 lead 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.

              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 value reported as physical size of the X screen as a
              whole (union of all configured monitors). In configurations with
              multiple monitors with different DPIs, the value has no physical
              meaning, but it may be used by some legacy clients which do not
              support RandR version 1.2 to compute a reference font scaling.
              Normally, xrandr resets the reported physical size values to
              keep the DPI constant.  This overrides that computation. Default
              DPI value is 96.

       --dpi dpi

       --dpi from-output
              This also sets the value reported as physical size of the X
              screen as a whole (union of all configured monitors). In
              configurations with multiple monitors with different DPIs, the
              value has no physical meaning, but it may be used by some legacy
              clients which do not support RandR version 1.2 to compute a
              reference font scaling. This option uses either the specified
              DPI value, or the DPI of the given output, to compute an
              appropriate physical size using whatever pixel size will be set.
              Typical values are the default (96 DPI), the DPI of the only
              monitor in single-monitor configurations, or the DPI of the
              primary monitor in multi-monitor configurations.

       --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 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

              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) 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 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.  If green and blue
              are not specified, the red value will be used for all three
              components.  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.

       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

       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

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

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

X Version 11                     xrandr 1.5.1                        XRANDR(1)