How to remove *all* green and blue light: xcalib and redshift seem not to?

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I'd like to have a redshift-style effect on my laptop screen but where I truly remove all green and blue light, leaving only red. I've experimented with redshift, which doesn't seem to take it all the way, only redder, but neither it seems does xcalib... I had thought I could get this by running this:



xcalib -blue 1 0 1 -a
xcalib -green 1 0 1 -a


But that seems to turn the screen orange rather than red -- perhaps it reduces the contrast in both directions (so makes the bottom end brighter too?). I'm confident that I'm right, and that that isn't a trick of the light, because if i run instead



xcalib -red 1 99 1 -a


...then my black terminal turns definitely the sort of red that I wanted.



Is there any way that I can achieve what I want -- effectively, cut out all blue and green light?



Thank you!!






linux redshift






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    up vote
    1
    down vote

    favorite












    I'd like to have a redshift-style effect on my laptop screen but where I truly remove all green and blue light, leaving only red. I've experimented with redshift, which doesn't seem to take it all the way, only redder, but neither it seems does xcalib... I had thought I could get this by running this:



    xcalib -blue 1 0 1 -a
    xcalib -green 1 0 1 -a


    But that seems to turn the screen orange rather than red -- perhaps it reduces the contrast in both directions (so makes the bottom end brighter too?). I'm confident that I'm right, and that that isn't a trick of the light, because if i run instead



    xcalib -red 1 99 1 -a


    ...then my black terminal turns definitely the sort of red that I wanted.



    Is there any way that I can achieve what I want -- effectively, cut out all blue and green light?



    Thank you!!






    linux redshift






    share







    New contributor




    justme 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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      down vote

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      up vote
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      down vote

      favorite











      I'd like to have a redshift-style effect on my laptop screen but where I truly remove all green and blue light, leaving only red. I've experimented with redshift, which doesn't seem to take it all the way, only redder, but neither it seems does xcalib... I had thought I could get this by running this:



      xcalib -blue 1 0 1 -a
      xcalib -green 1 0 1 -a


      But that seems to turn the screen orange rather than red -- perhaps it reduces the contrast in both directions (so makes the bottom end brighter too?). I'm confident that I'm right, and that that isn't a trick of the light, because if i run instead



      xcalib -red 1 99 1 -a


      ...then my black terminal turns definitely the sort of red that I wanted.



      Is there any way that I can achieve what I want -- effectively, cut out all blue and green light?



      Thank you!!






      linux redshift






      share







      New contributor




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











      I'd like to have a redshift-style effect on my laptop screen but where I truly remove all green and blue light, leaving only red. I've experimented with redshift, which doesn't seem to take it all the way, only redder, but neither it seems does xcalib... I had thought I could get this by running this:



      xcalib -blue 1 0 1 -a
      xcalib -green 1 0 1 -a


      But that seems to turn the screen orange rather than red -- perhaps it reduces the contrast in both directions (so makes the bottom end brighter too?). I'm confident that I'm right, and that that isn't a trick of the light, because if i run instead



      xcalib -red 1 99 1 -a


      ...then my black terminal turns definitely the sort of red that I wanted.



      Is there any way that I can achieve what I want -- effectively, cut out all blue and green light?



      Thank you!!






      linux redshift




      linux redshift





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      justme is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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