List displays that are turned on [duplicate]

This question already has an answer here:

Check if display is powered on in Linux

2 answers

I would like to check if a monitor is turned on so that I can switch the output to it.

xrandr --query

will show all connected displays no matter if they are turned on or not

xrandr --listmonitors

will only list the monitors that are displaying something.

edited Dec 21 '18 at 17:10

fra-san

1,192214

asked Dec 21 '18 at 15:45

schtiehve

marked as duplicate by Rui F Ribeiro, roaima, GAD3R, elbarna, Jeff Schaller Dec 22 '18 at 1:03

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

add a comment |

This question already has an answer here:

Check if display is powered on in Linux

2 answers

I would like to check if a monitor is turned on so that I can switch the output to it.

xrandr --query

will show all connected displays no matter if they are turned on or not

xrandr --listmonitors

will only list the monitors that are displaying something.

edited Dec 21 '18 at 17:10

fra-san

1,192214

asked Dec 21 '18 at 15:45

schtiehve

marked as duplicate by Rui F Ribeiro, roaima, GAD3R, elbarna, Jeff Schaller Dec 22 '18 at 1:03

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

add a comment |

This question already has an answer here:

Check if display is powered on in Linux

2 answers

I would like to check if a monitor is turned on so that I can switch the output to it.

xrandr --query

will show all connected displays no matter if they are turned on or not

xrandr --listmonitors

will only list the monitors that are displaying something.

edited Dec 21 '18 at 17:10

fra-san

1,192214

asked Dec 21 '18 at 15:45

schtiehve

This question already has an answer here:

Check if display is powered on in Linux

2 answers

I would like to check if a monitor is turned on so that I can switch the output to it.

xrandr --query

will show all connected displays no matter if they are turned on or not

xrandr --listmonitors

will only list the monitors that are displaying something.

This question already has an answer here:

Check if display is powered on in Linux

2 answers

shell

edited Dec 21 '18 at 17:10

fra-san

1,192214

asked Dec 21 '18 at 15:45

schtiehve

edited Dec 21 '18 at 17:10

fra-san

1,192214

asked Dec 21 '18 at 15:45

schtiehve

edited Dec 21 '18 at 17:10

fra-san

1,192214

edited Dec 21 '18 at 17:10

fra-san

1,192214

edited Dec 21 '18 at 17:10

fra-san

1,192214

asked Dec 21 '18 at 15:45

schtiehve

asked Dec 21 '18 at 15:45

schtiehve

asked Dec 21 '18 at 15:45

schtiehve

marked as duplicate by Rui F Ribeiro, roaima, GAD3R, elbarna, Jeff Schaller Dec 22 '18 at 1:03

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

marked as duplicate by Rui F Ribeiro, roaima, GAD3R, elbarna, Jeff Schaller Dec 22 '18 at 1:03

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

add a comment |

1 Answer
1

active

oldest

votes

https://stackoverflow.com/questions/3433203/how-to-determine-if-lcd-monitor-is-turned-on-from-linux-command-line found shell script code to check, a la:

#!/bin/bash export DISPLAY=:0.0



 if [ $# -eq 0 ]; then   

 echo usage: $(basename $0) "on|off|status"    

 exit 1  

fi  



 if [ $1 = "off" ]; then   

  echo -en "Turning monitor off..."   

  xset dpms force off   

  echo -en "done.nCheck:"  

  xset -q|grep "Monitor is"  



 elif [ $1 = "on" ]; then   

 echo -en "Turning monitor on..."

 xset dpms force on   

 echo -en "done.nCheck:"   

 xset -q|grep "Monitor is"  



 elif [ $1 = "status" ]; then   

 xset -q|sed -ne 's/^[ ]*Monitor is //p' 



 else    

 echo usage: $(basename $0) "on|off|status"   



 fi

edited Dec 21 '18 at 16:57

answered Dec 21 '18 at 16:27

K7AAY

380319

That dosen't seem to yield the results I'm looking for. What I wanna do is run a script that only executes when a second Monitor is Physically turned on. This Script will always return the status "on" when one Monitor is on and in usage.
– schtiehve
Dec 21 '18 at 18:45

add a comment |

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

https://stackoverflow.com/questions/3433203/how-to-determine-if-lcd-monitor-is-turned-on-from-linux-command-line found shell script code to check, a la:

#!/bin/bash export DISPLAY=:0.0



 if [ $# -eq 0 ]; then   

 echo usage: $(basename $0) "on|off|status"    

 exit 1  

fi  



 if [ $1 = "off" ]; then   

  echo -en "Turning monitor off..."   

  xset dpms force off   

  echo -en "done.nCheck:"  

  xset -q|grep "Monitor is"  



 elif [ $1 = "on" ]; then   

 echo -en "Turning monitor on..."

 xset dpms force on   

 echo -en "done.nCheck:"   

 xset -q|grep "Monitor is"  



 elif [ $1 = "status" ]; then   

 xset -q|sed -ne 's/^[ ]*Monitor is //p' 



 else    

 echo usage: $(basename $0) "on|off|status"   



 fi

edited Dec 21 '18 at 16:57

answered Dec 21 '18 at 16:27

K7AAY

380319

That dosen't seem to yield the results I'm looking for. What I wanna do is run a script that only executes when a second Monitor is Physically turned on. This Script will always return the status "on" when one Monitor is on and in usage.
– schtiehve
Dec 21 '18 at 18:45

add a comment |

https://stackoverflow.com/questions/3433203/how-to-determine-if-lcd-monitor-is-turned-on-from-linux-command-line found shell script code to check, a la:

#!/bin/bash export DISPLAY=:0.0



 if [ $# -eq 0 ]; then   

 echo usage: $(basename $0) "on|off|status"    

 exit 1  

fi  



 if [ $1 = "off" ]; then   

  echo -en "Turning monitor off..."   

  xset dpms force off   

  echo -en "done.nCheck:"  

  xset -q|grep "Monitor is"  



 elif [ $1 = "on" ]; then   

 echo -en "Turning monitor on..."

 xset dpms force on   

 echo -en "done.nCheck:"   

 xset -q|grep "Monitor is"  



 elif [ $1 = "status" ]; then   

 xset -q|sed -ne 's/^[ ]*Monitor is //p' 



 else    

 echo usage: $(basename $0) "on|off|status"   



 fi

edited Dec 21 '18 at 16:57

answered Dec 21 '18 at 16:27

K7AAY

380319

That dosen't seem to yield the results I'm looking for. What I wanna do is run a script that only executes when a second Monitor is Physically turned on. This Script will always return the status "on" when one Monitor is on and in usage.
– schtiehve
Dec 21 '18 at 18:45

add a comment |

https://stackoverflow.com/questions/3433203/how-to-determine-if-lcd-monitor-is-turned-on-from-linux-command-line found shell script code to check, a la:

#!/bin/bash export DISPLAY=:0.0



 if [ $# -eq 0 ]; then   

 echo usage: $(basename $0) "on|off|status"    

 exit 1  

fi  



 if [ $1 = "off" ]; then   

  echo -en "Turning monitor off..."   

  xset dpms force off   

  echo -en "done.nCheck:"  

  xset -q|grep "Monitor is"  



 elif [ $1 = "on" ]; then   

 echo -en "Turning monitor on..."

 xset dpms force on   

 echo -en "done.nCheck:"   

 xset -q|grep "Monitor is"  



 elif [ $1 = "status" ]; then   

 xset -q|sed -ne 's/^[ ]*Monitor is //p' 



 else    

 echo usage: $(basename $0) "on|off|status"   



 fi

edited Dec 21 '18 at 16:57

answered Dec 21 '18 at 16:27

K7AAY

380319

https://stackoverflow.com/questions/3433203/how-to-determine-if-lcd-monitor-is-turned-on-from-linux-command-line found shell script code to check, a la:

#!/bin/bash export DISPLAY=:0.0



 if [ $# -eq 0 ]; then   

 echo usage: $(basename $0) "on|off|status"    

 exit 1  

fi  



 if [ $1 = "off" ]; then   

  echo -en "Turning monitor off..."   

  xset dpms force off   

  echo -en "done.nCheck:"  

  xset -q|grep "Monitor is"  



 elif [ $1 = "on" ]; then   

 echo -en "Turning monitor on..."

 xset dpms force on   

 echo -en "done.nCheck:"   

 xset -q|grep "Monitor is"  



 elif [ $1 = "status" ]; then   

 xset -q|sed -ne 's/^[ ]*Monitor is //p' 



 else    

 echo usage: $(basename $0) "on|off|status"   



 fi

edited Dec 21 '18 at 16:57

answered Dec 21 '18 at 16:27

K7AAY

380319

edited Dec 21 '18 at 16:57

answered Dec 21 '18 at 16:27

K7AAY

380319

answered Dec 21 '18 at 16:27

K7AAY

380319

answered Dec 21 '18 at 16:27

K7AAY

380319

That dosen't seem to yield the results I'm looking for. What I wanna do is run a script that only executes when a second Monitor is Physically turned on. This Script will always return the status "on" when one Monitor is on and in usage.
– schtiehve
Dec 21 '18 at 18:45

add a comment |

That dosen't seem to yield the results I'm looking for. What I wanna do is run a script that only executes when a second Monitor is Physically turned on. This Script will always return the status "on" when one Monitor is on and in usage.
– schtiehve
Dec 21 '18 at 18:45

That dosen't seem to yield the results I'm looking for. What I wanna do is run a script that only executes when a second Monitor is Physically turned on. This Script will always return the status "on" when one Monitor is on and in usage.
– schtiehve
Dec 21 '18 at 18:45

add a comment |

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