Reduce laptop screen brightness below minimum in Ubuntu 13.10












4















My laptop configuration is Dell Inspiron 1440. I want to reduce my laptop screen brightness in Ubuntu below the minimum level that can be set using system settings. I usually set my screen brightness to an ultra low level, as it hurts my eyes.



I have already searched for the solution online and found related posts:




  • Can I fine-tune my screen brightness?


  • Dim screen past the minimum on Ubuntu – I have already tried the solution mentioned in that article.


  • Decrease Backlight Below Minimum



The problem is that in my case the screen brightness value in the file /sys/class/backlight/acpi_video0/brightness is already 0.



I have tried installing backlight and setting it to 0, and overwriting the value again as described in one of the posts above. However, none of it helps. I am currently using the latest version of Ubuntu 13.10.
Thanks,










share|improve this question

























  • I had already gone through the instructions given in the post mentioned above. It does not solve my issue.

    – qstack
    Jan 3 '14 at 10:43











  • Yes, I know, but that doesn’t mean there is any point to re-asking a question. Unfortunately you are still too new here, so you don’t have enough reputation points to post a comment at the other question. I’ll flag this so that a moderator can convert it to a comment to the other question for you and hopefully someone can find an answer for both of you.

    – Synetech
    Jan 3 '14 at 15:22













  • @Synetech It's not usually a problem to ask a new question when you've tried everything mentioned in the possible duplicate, but it still doesn't solve your problem. Questions now are closed as duplicates in order to point people to an answer. If the answer didn't work for them, there's no point in closing it. (This has changed a little over the last months. See When a user posts a duplicate but adds “none of the answers there worked”, is it a duplicate?)

    – slhck
    Jan 4 '14 at 19:43











  • There’s also no point in re-posting it if it couldn’t be solved already. Just bump the previous question.

    – Synetech
    Jan 4 '14 at 23:52











  • acpi_video0 would not work for me, the one that fine controls brightness in on intel_backlight. I have changed boot parameters for the system to use only this one, and forgets about acpi_video0.

    – pepper_chico
    Jan 28 '14 at 11:52


















4















My laptop configuration is Dell Inspiron 1440. I want to reduce my laptop screen brightness in Ubuntu below the minimum level that can be set using system settings. I usually set my screen brightness to an ultra low level, as it hurts my eyes.



I have already searched for the solution online and found related posts:




  • Can I fine-tune my screen brightness?


  • Dim screen past the minimum on Ubuntu – I have already tried the solution mentioned in that article.


  • Decrease Backlight Below Minimum



The problem is that in my case the screen brightness value in the file /sys/class/backlight/acpi_video0/brightness is already 0.



I have tried installing backlight and setting it to 0, and overwriting the value again as described in one of the posts above. However, none of it helps. I am currently using the latest version of Ubuntu 13.10.
Thanks,










share|improve this question

























  • I had already gone through the instructions given in the post mentioned above. It does not solve my issue.

    – qstack
    Jan 3 '14 at 10:43











  • Yes, I know, but that doesn’t mean there is any point to re-asking a question. Unfortunately you are still too new here, so you don’t have enough reputation points to post a comment at the other question. I’ll flag this so that a moderator can convert it to a comment to the other question for you and hopefully someone can find an answer for both of you.

    – Synetech
    Jan 3 '14 at 15:22













  • @Synetech It's not usually a problem to ask a new question when you've tried everything mentioned in the possible duplicate, but it still doesn't solve your problem. Questions now are closed as duplicates in order to point people to an answer. If the answer didn't work for them, there's no point in closing it. (This has changed a little over the last months. See When a user posts a duplicate but adds “none of the answers there worked”, is it a duplicate?)

    – slhck
    Jan 4 '14 at 19:43











  • There’s also no point in re-posting it if it couldn’t be solved already. Just bump the previous question.

    – Synetech
    Jan 4 '14 at 23:52











  • acpi_video0 would not work for me, the one that fine controls brightness in on intel_backlight. I have changed boot parameters for the system to use only this one, and forgets about acpi_video0.

    – pepper_chico
    Jan 28 '14 at 11:52
















4












4








4








My laptop configuration is Dell Inspiron 1440. I want to reduce my laptop screen brightness in Ubuntu below the minimum level that can be set using system settings. I usually set my screen brightness to an ultra low level, as it hurts my eyes.



I have already searched for the solution online and found related posts:




  • Can I fine-tune my screen brightness?


  • Dim screen past the minimum on Ubuntu – I have already tried the solution mentioned in that article.


  • Decrease Backlight Below Minimum



The problem is that in my case the screen brightness value in the file /sys/class/backlight/acpi_video0/brightness is already 0.



I have tried installing backlight and setting it to 0, and overwriting the value again as described in one of the posts above. However, none of it helps. I am currently using the latest version of Ubuntu 13.10.
Thanks,










share|improve this question
















My laptop configuration is Dell Inspiron 1440. I want to reduce my laptop screen brightness in Ubuntu below the minimum level that can be set using system settings. I usually set my screen brightness to an ultra low level, as it hurts my eyes.



I have already searched for the solution online and found related posts:




  • Can I fine-tune my screen brightness?


  • Dim screen past the minimum on Ubuntu – I have already tried the solution mentioned in that article.


  • Decrease Backlight Below Minimum



The problem is that in my case the screen brightness value in the file /sys/class/backlight/acpi_video0/brightness is already 0.



I have tried installing backlight and setting it to 0, and overwriting the value again as described in one of the posts above. However, none of it helps. I am currently using the latest version of Ubuntu 13.10.
Thanks,







ubuntu laptop lcd backlight






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Apr 13 '17 at 12:23









Community

1




1










asked Jan 3 '14 at 2:39









qstackqstack

2618




2618













  • I had already gone through the instructions given in the post mentioned above. It does not solve my issue.

    – qstack
    Jan 3 '14 at 10:43











  • Yes, I know, but that doesn’t mean there is any point to re-asking a question. Unfortunately you are still too new here, so you don’t have enough reputation points to post a comment at the other question. I’ll flag this so that a moderator can convert it to a comment to the other question for you and hopefully someone can find an answer for both of you.

    – Synetech
    Jan 3 '14 at 15:22













  • @Synetech It's not usually a problem to ask a new question when you've tried everything mentioned in the possible duplicate, but it still doesn't solve your problem. Questions now are closed as duplicates in order to point people to an answer. If the answer didn't work for them, there's no point in closing it. (This has changed a little over the last months. See When a user posts a duplicate but adds “none of the answers there worked”, is it a duplicate?)

    – slhck
    Jan 4 '14 at 19:43











  • There’s also no point in re-posting it if it couldn’t be solved already. Just bump the previous question.

    – Synetech
    Jan 4 '14 at 23:52











  • acpi_video0 would not work for me, the one that fine controls brightness in on intel_backlight. I have changed boot parameters for the system to use only this one, and forgets about acpi_video0.

    – pepper_chico
    Jan 28 '14 at 11:52





















  • I had already gone through the instructions given in the post mentioned above. It does not solve my issue.

    – qstack
    Jan 3 '14 at 10:43











  • Yes, I know, but that doesn’t mean there is any point to re-asking a question. Unfortunately you are still too new here, so you don’t have enough reputation points to post a comment at the other question. I’ll flag this so that a moderator can convert it to a comment to the other question for you and hopefully someone can find an answer for both of you.

    – Synetech
    Jan 3 '14 at 15:22













  • @Synetech It's not usually a problem to ask a new question when you've tried everything mentioned in the possible duplicate, but it still doesn't solve your problem. Questions now are closed as duplicates in order to point people to an answer. If the answer didn't work for them, there's no point in closing it. (This has changed a little over the last months. See When a user posts a duplicate but adds “none of the answers there worked”, is it a duplicate?)

    – slhck
    Jan 4 '14 at 19:43











  • There’s also no point in re-posting it if it couldn’t be solved already. Just bump the previous question.

    – Synetech
    Jan 4 '14 at 23:52











  • acpi_video0 would not work for me, the one that fine controls brightness in on intel_backlight. I have changed boot parameters for the system to use only this one, and forgets about acpi_video0.

    – pepper_chico
    Jan 28 '14 at 11:52



















I had already gone through the instructions given in the post mentioned above. It does not solve my issue.

– qstack
Jan 3 '14 at 10:43





I had already gone through the instructions given in the post mentioned above. It does not solve my issue.

– qstack
Jan 3 '14 at 10:43













Yes, I know, but that doesn’t mean there is any point to re-asking a question. Unfortunately you are still too new here, so you don’t have enough reputation points to post a comment at the other question. I’ll flag this so that a moderator can convert it to a comment to the other question for you and hopefully someone can find an answer for both of you.

– Synetech
Jan 3 '14 at 15:22







Yes, I know, but that doesn’t mean there is any point to re-asking a question. Unfortunately you are still too new here, so you don’t have enough reputation points to post a comment at the other question. I’ll flag this so that a moderator can convert it to a comment to the other question for you and hopefully someone can find an answer for both of you.

– Synetech
Jan 3 '14 at 15:22















@Synetech It's not usually a problem to ask a new question when you've tried everything mentioned in the possible duplicate, but it still doesn't solve your problem. Questions now are closed as duplicates in order to point people to an answer. If the answer didn't work for them, there's no point in closing it. (This has changed a little over the last months. See When a user posts a duplicate but adds “none of the answers there worked”, is it a duplicate?)

– slhck
Jan 4 '14 at 19:43





@Synetech It's not usually a problem to ask a new question when you've tried everything mentioned in the possible duplicate, but it still doesn't solve your problem. Questions now are closed as duplicates in order to point people to an answer. If the answer didn't work for them, there's no point in closing it. (This has changed a little over the last months. See When a user posts a duplicate but adds “none of the answers there worked”, is it a duplicate?)

– slhck
Jan 4 '14 at 19:43













There’s also no point in re-posting it if it couldn’t be solved already. Just bump the previous question.

– Synetech
Jan 4 '14 at 23:52





There’s also no point in re-posting it if it couldn’t be solved already. Just bump the previous question.

– Synetech
Jan 4 '14 at 23:52













acpi_video0 would not work for me, the one that fine controls brightness in on intel_backlight. I have changed boot parameters for the system to use only this one, and forgets about acpi_video0.

– pepper_chico
Jan 28 '14 at 11:52







acpi_video0 would not work for me, the one that fine controls brightness in on intel_backlight. I have changed boot parameters for the system to use only this one, and forgets about acpi_video0.

– pepper_chico
Jan 28 '14 at 11:52












2 Answers
2






active

oldest

votes


















0














Reduce the brightness by changing the value in the following file:



sudo nano /sys/class/backlight/intel_backlight/brightness



Set the value to 0 for absolute low brightness.






share|improve this answer































    -1














    You can try "f.lux". With it, you can change how the colors are displayed on your screen and maybe your eyes like the new way. That program will try to simulate a low light level ambient in your screen.



    http://justgetflux.com/






    share|improve this answer



















    • 3





      That’s not what f.lux is for; it only adjusts the color temperature of the screen, which is not what is being asked here.

      – Synetech
      Jan 3 '14 at 5:01











    • f.lux is not supported for ubuntu 13.10 .

      – qstack
      Jan 3 '14 at 10:47






    • 1





      Which is neither here nor there because it’s not what you’re looking for anyway. You need to adjust the gamma/contrast/brightness levels.

      – Synetech
      Jan 4 '14 at 23:52












    Your Answer








    StackExchange.ready(function() {
    var channelOptions = {
    tags: "".split(" "),
    id: "3"
    };
    initTagRenderer("".split(" "), "".split(" "), channelOptions);

    StackExchange.using("externalEditor", function() {
    // Have to fire editor after snippets, if snippets enabled
    if (StackExchange.settings.snippets.snippetsEnabled) {
    StackExchange.using("snippets", function() {
    createEditor();
    });
    }
    else {
    createEditor();
    }
    });

    function createEditor() {
    StackExchange.prepareEditor({
    heartbeatType: 'answer',
    autoActivateHeartbeat: false,
    convertImagesToLinks: true,
    noModals: true,
    showLowRepImageUploadWarning: true,
    reputationToPostImages: 10,
    bindNavPrevention: true,
    postfix: "",
    imageUploader: {
    brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
    contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
    allowUrls: true
    },
    onDemand: true,
    discardSelector: ".discard-answer"
    ,immediatelyShowMarkdownHelp:true
    });


    }
    });














    draft saved

    draft discarded


















    StackExchange.ready(
    function () {
    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f696357%2freduce-laptop-screen-brightness-below-minimum-in-ubuntu-13-10%23new-answer', 'question_page');
    }
    );

    Post as a guest















    Required, but never shown

























    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    0














    Reduce the brightness by changing the value in the following file:



    sudo nano /sys/class/backlight/intel_backlight/brightness



    Set the value to 0 for absolute low brightness.






    share|improve this answer




























      0














      Reduce the brightness by changing the value in the following file:



      sudo nano /sys/class/backlight/intel_backlight/brightness



      Set the value to 0 for absolute low brightness.






      share|improve this answer


























        0












        0








        0







        Reduce the brightness by changing the value in the following file:



        sudo nano /sys/class/backlight/intel_backlight/brightness



        Set the value to 0 for absolute low brightness.






        share|improve this answer













        Reduce the brightness by changing the value in the following file:



        sudo nano /sys/class/backlight/intel_backlight/brightness



        Set the value to 0 for absolute low brightness.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Jan 7 '18 at 17:36









        AadhilRFAadhilRF

        1012




        1012

























            -1














            You can try "f.lux". With it, you can change how the colors are displayed on your screen and maybe your eyes like the new way. That program will try to simulate a low light level ambient in your screen.



            http://justgetflux.com/






            share|improve this answer



















            • 3





              That’s not what f.lux is for; it only adjusts the color temperature of the screen, which is not what is being asked here.

              – Synetech
              Jan 3 '14 at 5:01











            • f.lux is not supported for ubuntu 13.10 .

              – qstack
              Jan 3 '14 at 10:47






            • 1





              Which is neither here nor there because it’s not what you’re looking for anyway. You need to adjust the gamma/contrast/brightness levels.

              – Synetech
              Jan 4 '14 at 23:52
















            -1














            You can try "f.lux". With it, you can change how the colors are displayed on your screen and maybe your eyes like the new way. That program will try to simulate a low light level ambient in your screen.



            http://justgetflux.com/






            share|improve this answer



















            • 3





              That’s not what f.lux is for; it only adjusts the color temperature of the screen, which is not what is being asked here.

              – Synetech
              Jan 3 '14 at 5:01











            • f.lux is not supported for ubuntu 13.10 .

              – qstack
              Jan 3 '14 at 10:47






            • 1





              Which is neither here nor there because it’s not what you’re looking for anyway. You need to adjust the gamma/contrast/brightness levels.

              – Synetech
              Jan 4 '14 at 23:52














            -1












            -1








            -1







            You can try "f.lux". With it, you can change how the colors are displayed on your screen and maybe your eyes like the new way. That program will try to simulate a low light level ambient in your screen.



            http://justgetflux.com/






            share|improve this answer













            You can try "f.lux". With it, you can change how the colors are displayed on your screen and maybe your eyes like the new way. That program will try to simulate a low light level ambient in your screen.



            http://justgetflux.com/







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Jan 3 '14 at 4:49









            Anderson Nascimento NunesAnderson Nascimento Nunes

            48147




            48147








            • 3





              That’s not what f.lux is for; it only adjusts the color temperature of the screen, which is not what is being asked here.

              – Synetech
              Jan 3 '14 at 5:01











            • f.lux is not supported for ubuntu 13.10 .

              – qstack
              Jan 3 '14 at 10:47






            • 1





              Which is neither here nor there because it’s not what you’re looking for anyway. You need to adjust the gamma/contrast/brightness levels.

              – Synetech
              Jan 4 '14 at 23:52














            • 3





              That’s not what f.lux is for; it only adjusts the color temperature of the screen, which is not what is being asked here.

              – Synetech
              Jan 3 '14 at 5:01











            • f.lux is not supported for ubuntu 13.10 .

              – qstack
              Jan 3 '14 at 10:47






            • 1





              Which is neither here nor there because it’s not what you’re looking for anyway. You need to adjust the gamma/contrast/brightness levels.

              – Synetech
              Jan 4 '14 at 23:52








            3




            3





            That’s not what f.lux is for; it only adjusts the color temperature of the screen, which is not what is being asked here.

            – Synetech
            Jan 3 '14 at 5:01





            That’s not what f.lux is for; it only adjusts the color temperature of the screen, which is not what is being asked here.

            – Synetech
            Jan 3 '14 at 5:01













            f.lux is not supported for ubuntu 13.10 .

            – qstack
            Jan 3 '14 at 10:47





            f.lux is not supported for ubuntu 13.10 .

            – qstack
            Jan 3 '14 at 10:47




            1




            1





            Which is neither here nor there because it’s not what you’re looking for anyway. You need to adjust the gamma/contrast/brightness levels.

            – Synetech
            Jan 4 '14 at 23:52





            Which is neither here nor there because it’s not what you’re looking for anyway. You need to adjust the gamma/contrast/brightness levels.

            – Synetech
            Jan 4 '14 at 23:52


















            draft saved

            draft discarded




















































            Thanks for contributing an answer to Super User!


            • Please be sure to answer the question. Provide details and share your research!

            But avoid



            • Asking for help, clarification, or responding to other answers.

            • Making statements based on opinion; back them up with references or personal experience.


            To learn more, see our tips on writing great answers.




            draft saved


            draft discarded














            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f696357%2freduce-laptop-screen-brightness-below-minimum-in-ubuntu-13-10%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown





















































            Required, but never shown














            Required, but never shown












            Required, but never shown







            Required, but never shown

































            Required, but never shown














            Required, but never shown












            Required, but never shown







            Required, but never shown







            Popular posts from this blog

            Mouse cursor on multiple screens with different PPI

            Agildo Ribeiro

            Sometime when accessing a menu: “Ubuntu 16.04 has experienced an internal error”