Provided by: x11-xserver-utils_7.7+7build1_amd64 bug


       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 {standby|suspend|off|on}]
       [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 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

       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 support.

       -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 entries.

       +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 LED:

               xset led named "Scroll Lock"

       mouse   The  m  option  controls  the  mouse  parameters; it may be abbreviated to 'm'. Of
               course, it applies to most pointing devices, not just mice. The parameters for the
               pointing  device  are  `acceleration'  and  `threshold'.  The  acceleration can be
               specified as an integer, or as a simple fraction. Threshold is  just  an  integer.
               The setting is applied to all connected pointing devices. xinput(1) should be used
               if you need device-specific settings.

       By default the pointer (the on-screen representation  of  the  pointing  device)  will  go
       `acceleration'  times  as fast when the device travels more than `threshold' mickeys (i.e.
       would-be pixels) in 10 ms, including a small transition  range.  This  way,  the  pointing
       device  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

       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 3, but not limited to that range.

       In the X Server 1.6 and above, the behaviour described  so  far  is  linked  to  the
       default profile. There are other profiles (i.e. functions determining pointer acceleration
       from device velocity) and additional settings, so the above description may not  apply  to
       non-default cases. In the Server 1.7, these are available as input device properties
       (see xinput).

       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 keyboard.

               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.

               The  -version  option  prints the program version and exits without doing anything

       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), xinput(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 <>