Capslock LED does not turn on

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP





.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty margin-bottom:0;







up vote
1
down vote

favorite












I have a raspberry with raspbian-lite and the problem is that the capslock led does not work when the keyboard is connected to it. The problem is not with the keyboard, as it works on other computers.



I tried doing



ioctl(STDOUT_FILENO, KDSETLED, 7);


which supposedly turns on every led, but the capslock didn't (the others yes).



But if I write 1 instead of 0 directly to the file that contains the brightness info of the capslock led (located somewhere at /sys) then it turns on.



Why does not the led work without writing directly to the file?



I also noticed that the event file of the usb interface which contains the leds (in /dev) does not work as expected. I tried in other computers to read the equivalent file, and when I press capslock or numlock some data appears. In the file in the raspberry when I do the same thing data does not appear.




keyboard raspbian capslock




share|improve this question



























    up vote
    1
    down vote

    favorite












    I have a raspberry with raspbian-lite and the problem is that the capslock led does not work when the keyboard is connected to it. The problem is not with the keyboard, as it works on other computers.



    I tried doing



    ioctl(STDOUT_FILENO, KDSETLED, 7);


    which supposedly turns on every led, but the capslock didn't (the others yes).



    But if I write 1 instead of 0 directly to the file that contains the brightness info of the capslock led (located somewhere at /sys) then it turns on.



    Why does not the led work without writing directly to the file?



    I also noticed that the event file of the usb interface which contains the leds (in /dev) does not work as expected. I tried in other computers to read the equivalent file, and when I press capslock or numlock some data appears. In the file in the raspberry when I do the same thing data does not appear.




    keyboard raspbian capslock




    share|improve this question























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I have a raspberry with raspbian-lite and the problem is that the capslock led does not work when the keyboard is connected to it. The problem is not with the keyboard, as it works on other computers.



      I tried doing



      ioctl(STDOUT_FILENO, KDSETLED, 7);


      which supposedly turns on every led, but the capslock didn't (the others yes).



      But if I write 1 instead of 0 directly to the file that contains the brightness info of the capslock led (located somewhere at /sys) then it turns on.



      Why does not the led work without writing directly to the file?



      I also noticed that the event file of the usb interface which contains the leds (in /dev) does not work as expected. I tried in other computers to read the equivalent file, and when I press capslock or numlock some data appears. In the file in the raspberry when I do the same thing data does not appear.




      keyboard raspbian capslock




      share|improve this question













      I have a raspberry with raspbian-lite and the problem is that the capslock led does not work when the keyboard is connected to it. The problem is not with the keyboard, as it works on other computers.



      I tried doing



      ioctl(STDOUT_FILENO, KDSETLED, 7);


      which supposedly turns on every led, but the capslock didn't (the others yes).



      But if I write 1 instead of 0 directly to the file that contains the brightness info of the capslock led (located somewhere at /sys) then it turns on.



      Why does not the led work without writing directly to the file?



      I also noticed that the event file of the usb interface which contains the leds (in /dev) does not work as expected. I tried in other computers to read the equivalent file, and when I press capslock or numlock some data appears. In the file in the raspberry when I do the same thing data does not appear.





      keyboard raspbian capslock





      share|improve this question












      share|improve this question




      share|improve this question








      edited Aug 3 at 22:20
























      asked Aug 3 at 17:00









      Garmekain

      1715




      1715

























          active

          oldest

          votes











          Your Answer







          StackExchange.ready(function()
          var channelOptions =
          tags: "".split(" "),
          id: "106"
          ;
          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',
          convertImagesToLinks: false,
          noModals: false,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: null,
          bindNavPrevention: true,
          postfix: "",
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          );



          );








           

          draft saved


          draft discarded


















          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f460380%2fcapslock-led-does-not-turn-on%23new-answer', 'question_page');

          );

          Post as a guest






















          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes










           

          draft saved


          draft discarded


























           


          draft saved


          draft discarded














          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f460380%2fcapslock-led-does-not-turn-on%23new-answer', 'question_page');

          );

          Post as a guest
































































          -

          Popular posts from this blog

          How to check contact read email or not when send email to Individual?

          Image
          Clash Royale CLAN TAG #URR8PPP up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this question asked Sep 26 at 0:12 ToanLuong 49 9 add a comment  |  up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this questi...
          Read more

          Displaying single band from multi-band raster using QGIS

          Image
          Clash Royale CLAN TAG #URR8PPP 1 How can I extract a single band from multi-band raster in QGIS? I have an remote sensed image which has 6 bands (including NDVI band), I want to display each band separately, but have no idea how to do. I have seen some questions similar here but none worked for me. The original image (has 6 bands) is: I want to display the band 6 which should be like this: But I tried gdal_translate, and couldn't get the correct result. What I have got is: qgis raster multi-band share | improve this question edited Mar 5 at 0:53 Summer asked Mar 4 at 6:42 Summer Summer 23 6 Is this any help gis.stackexchange.com/questions/220658/… ? if not gis.stackexchange.com/questions/62133/… might help. – Michael Stimson Mar 4 at 6:46 Thanks for answering but when I used gdal_translate, qgis showed that 'Error 4: Kayena.tif: No such file or directory". Would you know how to fi...
          Read more

          How many registers does an x86_64 CPU actually have?

          Image
          Clash Royale CLAN TAG #URR8PPP up vote 2 down vote favorite I am currently learning reverse engineering and am studying the flags register. I had in my mind that rflags was just another name for one of the 16 general purpose registers, for example rax or rbx . But it looks like rflags is actually an additional register. So that makes 17 registers in total... how many more could there be? I have spent at least an hour on this and found numerous different answers. The best answer so far is this, which says that there are 40 registers in total. 16 General Purpose Registers 2 Status Registers 6 Code Segment Registers 16 SSE Registers 8 FPU/MMX Registers But if I add that up, I get 48. Could anybody provide an official answer on how many registers an x86_64 CPU has (e.g. an Intel i7). Additionally, I have seen references to 'hardware' and 'architectural' registers. What are those registers and how many are there? register x86-64 share | improve this...
          Read more