How to visually and individually control external and integrated display brightness











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I'm a Ubuntu (and Linux in general) newbie, so...

I have a Ubuntu 18.04 installation with the latest NVidia proprietary driver (version 415) installed, but the brightness slider just affects the internal monitor instead of the external one (I'm using an Apple Cinema Display 27") connected via a mini DisplayPort of my laptop.



The output of lspci -nnk | grep VGA -A1 is:



00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:3e9b]
Subsystem: CLEVO/KAPOK Computer Device [1558:95e1]
--
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP104M [GeForce GTX 1070 Mobile] [10de:1ba1] (rev a1)
Subsystem: CLEVO/KAPOK Computer GP104M [GeForce GTX 1070 Mobile] [1558:95e1]









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    up vote
    1
    down vote

    favorite












    I'm a Ubuntu (and Linux in general) newbie, so...

    I have a Ubuntu 18.04 installation with the latest NVidia proprietary driver (version 415) installed, but the brightness slider just affects the internal monitor instead of the external one (I'm using an Apple Cinema Display 27") connected via a mini DisplayPort of my laptop.



    The output of lspci -nnk | grep VGA -A1 is:



    00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:3e9b]
    Subsystem: CLEVO/KAPOK Computer Device [1558:95e1]
    --
    01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP104M [GeForce GTX 1070 Mobile] [10de:1ba1] (rev a1)
    Subsystem: CLEVO/KAPOK Computer GP104M [GeForce GTX 1070 Mobile] [1558:95e1]









    share|improve this question









    New contributor




    Gilson Cavalcanti is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I'm a Ubuntu (and Linux in general) newbie, so...

      I have a Ubuntu 18.04 installation with the latest NVidia proprietary driver (version 415) installed, but the brightness slider just affects the internal monitor instead of the external one (I'm using an Apple Cinema Display 27") connected via a mini DisplayPort of my laptop.



      The output of lspci -nnk | grep VGA -A1 is:



      00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:3e9b]
      Subsystem: CLEVO/KAPOK Computer Device [1558:95e1]
      --
      01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP104M [GeForce GTX 1070 Mobile] [10de:1ba1] (rev a1)
      Subsystem: CLEVO/KAPOK Computer GP104M [GeForce GTX 1070 Mobile] [1558:95e1]









      share|improve this question









      New contributor




      Gilson Cavalcanti is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      I'm a Ubuntu (and Linux in general) newbie, so...

      I have a Ubuntu 18.04 installation with the latest NVidia proprietary driver (version 415) installed, but the brightness slider just affects the internal monitor instead of the external one (I'm using an Apple Cinema Display 27") connected via a mini DisplayPort of my laptop.



      The output of lspci -nnk | grep VGA -A1 is:



      00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:3e9b]
      Subsystem: CLEVO/KAPOK Computer Device [1558:95e1]
      --
      01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP104M [GeForce GTX 1070 Mobile] [10de:1ba1] (rev a1)
      Subsystem: CLEVO/KAPOK Computer GP104M [GeForce GTX 1070 Mobile] [1558:95e1]






      nvidia multiple-monitors display brightness






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      share|improve this question









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      edited Nov 15 at 23:50









      zx485

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      1,43531114






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      asked Nov 15 at 22:06









      Gilson Cavalcanti

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      New contributor





      Gilson Cavalcanti is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Gilson Cavalcanti is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.



























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