Difference between revisions of "Running program in separate X display"

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Line 9: Line 9:
 
  #!/bin/bash
 
  #!/bin/bash
 
   
 
   
  # use this display number to run
+
  #test if file exists, otherwise exit
  NEWDISP=":10"  
+
  which $* 2> /dev/null
 +
if [ "$?" != "0" ] ; then
 +
echo "No such executable"
 +
exit 127
 +
fi
 
   
 
   
  # this flag is used for indicating inaccessible or broken DRI.  
+
# use this display number
  # it can be mistakenly set, for example, when using fglrx+compiz-manager
+
NEWDISP=":10"
  # Some games will refuse to start if this variable is set.
+
  # unsetting it should not do any harm, and can be really useful.
+
  # this flag is used for indicating unaccessible or broken DRI.
 +
  # it is set, for example, when using fglrx+compiz-manager
 +
  # Some games will refuse to start if it is set.
 +
  # unsetting it should not do any harm, and can be useful.
 
  unset LIBGL_ALWAYS_INDIRECT
 
  unset LIBGL_ALWAYS_INDIRECT
 
   
 
   
# this var can fix jumping pointer with some A4 mice in SDL games
+
  #main execution line with automatic full path retrieval.
# but it can also generate other glitches. Use only if needed
+
#export SDL_MOUSE_RELATIVE=0 
+
+
  # main execution line with automatic full path retrieval.
+
 
  xinit `which $*` -- $NEWDISP &
 
  xinit `which $*` -- $NEWDISP &
 
   
 
   
Line 29: Line 32:
 
  sleep 1s
 
  sleep 1s
 
   
 
   
  # disable non-linear mouse acceleration
+
  # disable annoying non-linear mouse acceleration
 
  xset m 1 0
 
  xset m 1 0
 
  # disable hard-coded default 10m screensaver
 
  # disable hard-coded default 10m screensaver
 
  xset s 0 0
 
  xset s 0 0
 +
 
General principle: set variables before xinit line, and xset parameters after.
 
General principle: set variables before xinit line, and xset parameters after.
  
Line 40: Line 44:
 
  xrun appname
 
  xrun appname
  
--[[User:Psycho zs|Psycho zs]] 09:21, 27 September 2010 (EDT)
+
--[[User:Psycho zs|Psycho zs]] 17:03, 1 October 2010 (EDT)

Revision as of 21:03, 1 October 2010

It may often be handy to run some program in separate X display. I.e. 3D games for gaining performance, or making alt+tab-style switching possible with ctrl+alt+[F7-F12].

The simplest way would be:

xinit appname -- :10

But if you have ~/.xinitrc in place, you should use full path to app to override it. Also there can be some environment variables and X options to pass. So the smart way would be to pack it all into a wrapper:

#!/bin/bash

#test if file exists, otherwise exit
which $* 2> /dev/null
if [ "$?" != "0" ] ; then
echo "No such executable"
exit 127
fi

# use this display number
NEWDISP=":10"

# this flag is used for indicating unaccessible or broken DRI.
# it is set, for example, when using fglrx+compiz-manager
# Some games will refuse to start if it is set.
# unsetting it should not do any harm, and can be useful.
unset LIBGL_ALWAYS_INDIRECT

#main execution line with automatic full path retrieval.
xinit `which $*` -- $NEWDISP &

#then we set useful parameters
DISPLAY=$NEWDISP
sleep 1s

# disable annoying non-linear mouse acceleration
xset m 1 0
# disable hard-coded default 10m screensaver
xset s 0 0

General principle: set variables before xinit line, and xset parameters after.

Save it as /usr/bin/xrun

After that launching app in separate X display should be as easy as typing

xrun appname

--Psycho zs 17:03, 1 October 2010 (EDT)