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       xset - user preference utility for X


       xset [-display display]
       [-b] [b {on|off}] [b [volume [pitch [duration]]]]
       [-bc] [bc]
       [-c] [c {on|off}] [c [volume]]
       [+dpms] [-dpms]
            [dpms    standby    [    suspend   [   off]]]        [dpms   force
       [fp=pathlist] [-fp=pathlist] [+fp=pathlist] [fp-pathlist] [fp+pathlist]
       [fp default] [fp rehash]
       [-led [integer|named indicator]] [led [integer|named indicator]]
       [led {on|off}]
       [mouse [accel_mult[/accel_div] [threshold]]] [mouse default]
       [p pixel color]
       [-r [keycode]]  [r [keycode]] [r {on|off}] [r rate delay [rate]]
       [s  [length  [period]]]  [s  {blank|noblank}]  [s {expose|noexpose}] [s
       {on|off}] [s default] [s activate] [s reset]


       This program is used to set various  user  preference  options  of  the


       -display display
               This option specifies the server to use; see X(7).

       b       The  b  option  controls bell volume, pitch and duration.  This
               option accepts up to three numerical  parameters,  a  preceding
               dash(-),  or  a  'on/off' flag.  If no parameters are given, or
               the 'on' flag is used, the system defaults will  be  used.   If
               the  dash  or 'off' are given, the bell will be turned off.  If
               only one numerical parameter is given, the bell volume will  be
               set  to  that value, as a percentage of its maximum.  Likewise,
               the second numerical parameter specifies  the  bell  pitch,  in
               hertz, and the third numerical parameter specifies the duration
               in milliseconds.  Note that not all hardware can vary the  bell
               characteristics.   The X server will set the characteristics of
               the bell as closely as it can to the user's specifications.

       bc      The bc option controls bug compatibility mode in the server, if
               possible;  a preceding dash(-) disables the mode, otherwise the
               mode is enabled.  Various pre-R4 clients pass illegal values in
               some  protocol  requests,  and pre-R4 servers did not correctly
               generate errors in these cases.  Such clients, when run against
               an  R4  server,  will terminate abnormally or otherwise fail to
               operate   correctly.    Bug   compatibility   mode   explicitly
               reintroduces  certain bugs into the X server, so that many such
               clients can still be run.  This mode should be used with  care;
               new  application  development  should  be  done  with this mode
               disabled.  The server must support  the  MIT-SUNDRY-NONSTANDARD
               protocol extension in order for this option to work.

       c       The  c  option  controls  key  click.   This option can take an
               optional value, a preceding dash(-), or an 'on/off'  flag.   If
               no  parameter  or  the  'on' flag is given, the system defaults
               will be used. If the dash or 'off' flag is used, keyclick  will
               be  disabled.  If a value from 0 to 100 is given, it is used to
               indicate volume, as a percentage of the maximum.  The X  server
               will  set the volume to the nearest value that the hardware can

       -dpms   The -dpms option disables DPMS (Energy Star) features.

       +dpms   The +dpms option enables DPMS (Energy Star) features.

       dpms flags...
               The dpms option allows the DPMS (Energy Star) parameters to  be
               set.   The option can take up to three numerical values, or the
               `force' flag followed by  a  DPMS  state.   The  `force'  flags
               forces  the  server  to  immediately  switch  to the DPMS state
               specified.  The DPMS state can be one of `standby',  `suspend',
               `off',  or `on'.  When numerical values are given, they set the
               inactivity period (in units of seconds) before the three  modes
               are  activated.   The  first  value  given is for the `standby'
               mode, the second is for the `suspend' mode, and  the  third  is
               for  the  `off'  mode.  Setting these values implicitly enables
               the DPMS features.  A value of zero disables a particular mode.

       fp= path,...
               The  fp=  sets  the  font path to the entries given in the path
               argument.  The entries are interpreted by the  server,  not  by
               the  client.  Typically they are directory names or font server
               names, but the interpretation is server-dependent.

       fp default
               The default argument causes the font path to be  reset  to  the
               server's default.

       fp rehash
               The  rehash argument resets the font path to its current value,
               causing the server to reread the font databases in the  current
               font  path.   This is generally only used when adding new fonts
               to a font directory (after running mkfontdir  to  recreate  the
               font database).

       -fp or fp-
               The  -fp  and fp- options remove elements from the current font
               path.  They must be  followed  by  a  comma-separated  list  of

       +fp or fp+
               This  +fp  and  fp+  options prepend and append elements to the
               current font path, respectively.  They must be  followed  by  a
               comma-separated list of entries.

       led     The  led  option controls the keyboard LEDs.  This controls the
               turning on or off of one or all of the  LEDs.   It  accepts  an
               optional  integer, a preceding dash(-) or an 'on/off' flag.  If
               no parameter or the 'on' flag is given, all LEDs are turned on.
               If  a  preceding  dash or the flag 'off' is given, all LEDs are
               turned off.  If a value between 1 and 32  is  given,  that  LED
               will  be  turned  on  or  off  depending  on the existence of a
               preceding dash.  ``xset led 3'' would turn led #3  on.   ``xset
               -led  3''  would  turn  it  off.  The particular LED values may
               refer to different LEDs on different hardware.  If the X server
               supports  the XKEYBOARD (XKB) extension, leds may be referenced
               by the XKB indicator name by specifying the `named' keyword and
               the  indicator  name.   For example, to turn on the Scroll Lock

               xset led named "Scroll Lock"

       mouse   The  m  option  controls  the  mouse  parameters;  it  may   be
               abbreviated   to   'm'.   The  parameters  for  the  mouse  are
               `acceleration'  and  `threshold'.   The  acceleration  can   be
               specified  as  an integer, or as a simple fraction.  The mouse,
               or whatever pointer  the  machine  is  connected  to,  will  go
               `acceleration'   times  as  fast  when  it  travels  more  than
               `threshold' pixels in a short time.  This way, the mouse can be
               used  for precise alignment when it is moved slowly, yet it can
               be set to travel across the screen in a flick of the wrist when
               desired.   One  or  both  parameters  for  the  m option can be
               omitted, but if only one is given, it will  be  interpreted  as
               the  acceleration.   If  no parameters or the flag 'default' is
               used, the system defaults will be set.

               If  the  `threshold'  parameter  is   provided   and   0,   the
               `acceleration' parameter will be used in the exponent of a more
               natural and continuous formula, giving precise control for slow
               motion  but  big  reach  for  fast  motion,  and  a progressive
               transition for motions in between.  Recommended  `acceleration'
               value  in this case is 3/2 to 2, but not limited to that range.

       p       The p option controls pixel color values.  The  parameters  are
               the   color   map   entry   number  in  decimal,  and  a  color
               specification.  The root background colors may  be  changed  on
               some  servers  by  altering  the  entries  for  BlackPixel  and
               WhitePixel.  Although these are often 0 and 1,  they  need  not
               be.   Also,  a  server  may  choose  to  allocate  those colors
               privately, in which case an error will be generated.   The  map
               entry must not be a read-only color, or an error will result.

       r       The  r  option controls the autorepeat.  Invoking with "-r", or
               "r off", will disable autorepeat, whereas "r", or  "r on"  will
               enable  autorepeat.   Following  the "-r" or "r" option with an
               integer keycode between  0  and  255  will  disable  or  enable
               autorepeat on that key respectively, but only if it makes sense
               for the particular keycode.  Keycodes below 8 are not typically
               valid  for  this  command.   Example: "xset -r 10" will disable
               autorepeat for the "1"  key  on  the  top  row  of  an  IBM  PC

               If  the  server supports the XFree86-Misc extension, or the XKB
               extension, then a parameter of 'rate' is accepted and should be
               followed  by  zero,  one  or  two  numeric  values.  The  first
               specifies the delay before autorepeat  starts  and  the  second
               specifies  the  repeat  rate.   In  the  case  that  the server
               supports  the  XKB  extension,  the  delay  is  the  number  of
               milliseconds  before  autorepeat  starts,  and  the rate is the
               number of repeats per second.  If the  rate  or  delay  is  not
               given, it will be set to the default value.

       s       The  s  option  lets you set the screen saver parameters.  This
               option   accepts   up   to   two   numerical   parameters,    a
               'blank/noblank'  flag,  an  'expose/noexpose' flag, an 'on/off'
               flag, an 'activate/reset' flag, or the 'default' flag.   If  no
               parameters  or  the  'default' flag is used, the system will be
               set to its default screen saver characteristics.  The  'on/off'
               flags  simply  turn  the screen saver functions on or off.  The
               'activate' flag forces activation of screen saver even  if  the
               screen  saver  had  been  turned  off.  The 'reset' flag forces
               deactivation of screen saver if it is active.  The 'blank' flag
               sets  the preference to blank the video (if the hardware can do
               so) rather than display a background pattern,  while  'noblank'
               sets  the preference to display a pattern rather than blank the
               video.  The 'expose' flag sets the preference to  allow  window
               exposures  (the  server  can  freely  discard window contents),
               while 'noexpose' sets the preference to  disable  screen  saver
               unless  the  server  can regenerate the screens without causing
               exposure events.  The length  and  period  parameters  for  the
               screen  saver  function  determines how long the server must be
               inactive for screen saving  to  activate,  and  the  period  to
               change  the background pattern to avoid burn in.  The arguments
               are specified in seconds.  If only one numerical  parameter  is
               given, it will be used for the length.

       q       The q option gives you information on the current settings.

       These settings will be reset to default values when you log out.

       Note  that  not  all  X  implementations are guaranteed to honor all of
       these options.


       X(7), Xserver(1), xmodmap(1), xrdb(1), xsetroot(1)


       Bob Scheifler, MIT Laboratory for Computer Science
       David Krikorian, MIT Project Athena (X11 version)
       XFree86-Misc support added by David Dawes and Joe Moss
       Manpage updates added by Mike A. Harris <>