Command not giving any output

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ls /sys/class/backlight/

is not giving any output on my terminal. I have Ubuntu 17.10 dual booted alongside Windows 10 on my Alienware r3 15. I need to solve this issue to try to fix my main issue Unable to change the screen brightness given in the article https://itsfoss.com/fix-brightness-ubuntu-1310/. Kindly help me find a solution.







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  • what video card do you have? do you have the drivers installed for it?
    – Joshua Besneatte
    May 13 at 20:53










  • I have an 'Intel(R) HD Graphics 630' and an 'Nvidia GeForce GTX 1060' on my system. lspci |grep -i vga only showed the Nvidia card though. You may check the output of sudo lshw -C display in my another question [askubuntu.com/questions/1028979/…. I am not sure if I have the drivers installed, at least I haven't installed them specifically. I am not sure if Ubuntu has installed it's own drivers for video cards or not @JoshuaBesneatte
    – Vaibhav Mishra
    May 14 at 21:20














up vote
0
down vote

favorite












ls /sys/class/backlight/

is not giving any output on my terminal. I have Ubuntu 17.10 dual booted alongside Windows 10 on my Alienware r3 15. I need to solve this issue to try to fix my main issue Unable to change the screen brightness given in the article https://itsfoss.com/fix-brightness-ubuntu-1310/. Kindly help me find a solution.







share|improve this question




















  • what video card do you have? do you have the drivers installed for it?
    – Joshua Besneatte
    May 13 at 20:53










  • I have an 'Intel(R) HD Graphics 630' and an 'Nvidia GeForce GTX 1060' on my system. lspci |grep -i vga only showed the Nvidia card though. You may check the output of sudo lshw -C display in my another question [askubuntu.com/questions/1028979/…. I am not sure if I have the drivers installed, at least I haven't installed them specifically. I am not sure if Ubuntu has installed it's own drivers for video cards or not @JoshuaBesneatte
    – Vaibhav Mishra
    May 14 at 21:20












up vote
0
down vote

favorite









up vote
0
down vote

favorite











ls /sys/class/backlight/

is not giving any output on my terminal. I have Ubuntu 17.10 dual booted alongside Windows 10 on my Alienware r3 15. I need to solve this issue to try to fix my main issue Unable to change the screen brightness given in the article https://itsfoss.com/fix-brightness-ubuntu-1310/. Kindly help me find a solution.







share|improve this question












ls /sys/class/backlight/

is not giving any output on my terminal. I have Ubuntu 17.10 dual booted alongside Windows 10 on my Alienware r3 15. I need to solve this issue to try to fix my main issue Unable to change the screen brightness given in the article https://itsfoss.com/fix-brightness-ubuntu-1310/. Kindly help me find a solution.









share|improve this question











share|improve this question




share|improve this question










asked May 13 at 20:31









Vaibhav Mishra

62




62











  • what video card do you have? do you have the drivers installed for it?
    – Joshua Besneatte
    May 13 at 20:53










  • I have an 'Intel(R) HD Graphics 630' and an 'Nvidia GeForce GTX 1060' on my system. lspci |grep -i vga only showed the Nvidia card though. You may check the output of sudo lshw -C display in my another question [askubuntu.com/questions/1028979/…. I am not sure if I have the drivers installed, at least I haven't installed them specifically. I am not sure if Ubuntu has installed it's own drivers for video cards or not @JoshuaBesneatte
    – Vaibhav Mishra
    May 14 at 21:20
















  • what video card do you have? do you have the drivers installed for it?
    – Joshua Besneatte
    May 13 at 20:53










  • I have an 'Intel(R) HD Graphics 630' and an 'Nvidia GeForce GTX 1060' on my system. lspci |grep -i vga only showed the Nvidia card though. You may check the output of sudo lshw -C display in my another question [askubuntu.com/questions/1028979/…. I am not sure if I have the drivers installed, at least I haven't installed them specifically. I am not sure if Ubuntu has installed it's own drivers for video cards or not @JoshuaBesneatte
    – Vaibhav Mishra
    May 14 at 21:20















what video card do you have? do you have the drivers installed for it?
– Joshua Besneatte
May 13 at 20:53




what video card do you have? do you have the drivers installed for it?
– Joshua Besneatte
May 13 at 20:53












I have an 'Intel(R) HD Graphics 630' and an 'Nvidia GeForce GTX 1060' on my system. lspci |grep -i vga only showed the Nvidia card though. You may check the output of sudo lshw -C display in my another question [askubuntu.com/questions/1028979/…. I am not sure if I have the drivers installed, at least I haven't installed them specifically. I am not sure if Ubuntu has installed it's own drivers for video cards or not @JoshuaBesneatte
– Vaibhav Mishra
May 14 at 21:20




I have an 'Intel(R) HD Graphics 630' and an 'Nvidia GeForce GTX 1060' on my system. lspci |grep -i vga only showed the Nvidia card though. You may check the output of sudo lshw -C display in my another question [askubuntu.com/questions/1028979/…. I am not sure if I have the drivers installed, at least I haven't installed them specifically. I am not sure if Ubuntu has installed it's own drivers for video cards or not @JoshuaBesneatte
– Vaibhav Mishra
May 14 at 21:20










1 Answer
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That folder is empty for me too. Look for your card type with:



System Settings->Details->About



or from the command line



lspci |grep -i vga


and then you can find what driver you are using with:



lsmod


then update/create your config according to the link you posted






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    1 Answer
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    active

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    1 Answer
    1






    active

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    active

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    up vote
    0
    down vote













    That folder is empty for me too. Look for your card type with:



    System Settings->Details->About



    or from the command line



    lspci |grep -i vga


    and then you can find what driver you are using with:



    lsmod


    then update/create your config according to the link you posted






    share|improve this answer
























      up vote
      0
      down vote













      That folder is empty for me too. Look for your card type with:



      System Settings->Details->About



      or from the command line



      lspci |grep -i vga


      and then you can find what driver you are using with:



      lsmod


      then update/create your config according to the link you posted






      share|improve this answer






















        up vote
        0
        down vote










        up vote
        0
        down vote









        That folder is empty for me too. Look for your card type with:



        System Settings->Details->About



        or from the command line



        lspci |grep -i vga


        and then you can find what driver you are using with:



        lsmod


        then update/create your config according to the link you posted






        share|improve this answer












        That folder is empty for me too. Look for your card type with:



        System Settings->Details->About



        or from the command line



        lspci |grep -i vga


        and then you can find what driver you are using with:



        lsmod


        then update/create your config according to the link you posted







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered May 13 at 20:47









        Joshua Besneatte

        1,494618




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