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How to check whether module is loaded with custom configurations?


Why is my network interface named enp0s25 instead of eth0?How do I create a system file /etc/modprobe.d/ath9k.conf?`qdbus` returns an error. Ubuntu 18.04How (recipe) to build only one kernel module?Cannot get my N300 (DWA-130) D-link wireless USB to work on Ubuntu 14.04I have a Sony Vaio SVT131Aiil. The wireless does not show up as an option in network managerinstalled ubuntu 16.04 on hp laptop - wifi not workingubuntu 16.04 hotspot. Client has no internetwl module is loaded but not workingwireless ath9k suddenly stopped working on ubuntu 16.04UbuntuStudio will connect to one of two routersASUS laptop - wifi not connecting after upgrading to 18.04Kernel can't see Atheros Communications Inc. AR9462 Wireless Network Adapter













2















In the answer by Chili555 for How do I create a system file /etc/modprobe.d/ath9k.conf? it is shown that you can create a config file for a kernel module . Now the question is how do I verify that the options set in that config file have taken effect after sudo modprobe ath9k ?



Specific option that I am trying to check is ps_enable. However, doing the following



$ modinfo ath9k | grep ps_enable
parm: ps_enable:Enable WLAN PowerSave (int)


only explains what the parameter is and not its current value.










share|improve this question





























    2















    In the answer by Chili555 for How do I create a system file /etc/modprobe.d/ath9k.conf? it is shown that you can create a config file for a kernel module . Now the question is how do I verify that the options set in that config file have taken effect after sudo modprobe ath9k ?



    Specific option that I am trying to check is ps_enable. However, doing the following



    $ modinfo ath9k | grep ps_enable
    parm: ps_enable:Enable WLAN PowerSave (int)


    only explains what the parameter is and not its current value.










    share|improve this question



























      2












      2








      2








      In the answer by Chili555 for How do I create a system file /etc/modprobe.d/ath9k.conf? it is shown that you can create a config file for a kernel module . Now the question is how do I verify that the options set in that config file have taken effect after sudo modprobe ath9k ?



      Specific option that I am trying to check is ps_enable. However, doing the following



      $ modinfo ath9k | grep ps_enable
      parm: ps_enable:Enable WLAN PowerSave (int)


      only explains what the parameter is and not its current value.










      share|improve this question
















      In the answer by Chili555 for How do I create a system file /etc/modprobe.d/ath9k.conf? it is shown that you can create a config file for a kernel module . Now the question is how do I verify that the options set in that config file have taken effect after sudo modprobe ath9k ?



      Specific option that I am trying to check is ps_enable. However, doing the following



      $ modinfo ath9k | grep ps_enable
      parm: ps_enable:Enable WLAN PowerSave (int)


      only explains what the parameter is and not its current value.







      networking drivers configuration system






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 2 hours ago







      Sergiy Kolodyazhnyy

















      asked 3 hours ago









      Sergiy KolodyazhnyySergiy Kolodyazhnyy

      73.9k9154323




      73.9k9154323






















          1 Answer
          1






          active

          oldest

          votes


















          2














          Apparently such information is contained within /sys filesystem. According to Gilles's answer on the relevant post, in order to find the driver in use by interface you would execute



          readlink /sys/class/net/wlan0/device/driver


          which would provide the relative path as in



          ../../../../bus/pci/drivers/ath5k


          In my case due to systemd and predictive interface naming, the interface is named differently and produces



          $  readlink /sys/class/net/wlp2s0/device/driver
          ../../../../bus/pci/drivers/ath9k


          The resulting directory path contains subdirectories module/parameters/ where there will be files for each parameter containing their current value. Thus, if I edit the /etc/modprobe/ath9k.conf file and reinsert the module, the result is as follows:



          # After editing the conf file to set parameter to 1
          $ sudo sh -c 'modprobe -r ath9k ; sleep 3; modprobe ath9k'
          $ sudo cat /sys/class/net/wlp2s0/device/driver/../../../../bus/pci/drivers/ath9k/module/parameters/ps_enable
          1
          # after editing the file and setting parameter to 0
          $ sudo sh -c 'modprobe -r ath9k ; sleep 3; modprobe ath9k'
          $ sudo cat /sys/class/net/wlp2s0/device/driver/../../../../bus/pci/drivers/ath9k/module/parameters/ps_enable
          0


          The command can be combined as well.



          $ cat  "$(readlink -f /sys/class/net/wlp2s0/device/driver/)"/module/parameters/ps_enable
          0


          If you do have desktop environment and dbus running, as well as qdbus or dbus-send installed, such information can be queried via Network Manager's dbus interface ( though it requires figuring out the object path of each individual device, and probably would be better written in Python or C )



          $ qdbus --system org.freedesktop.NetworkManager /org/freedesktop/NetworkManager/Devices/14 org.freedesktop.NetworkManager.Device.Driver
          ath9k





          share|improve this answer

























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            1 Answer
            1






            active

            oldest

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            active

            oldest

            votes






            active

            oldest

            votes









            2














            Apparently such information is contained within /sys filesystem. According to Gilles's answer on the relevant post, in order to find the driver in use by interface you would execute



            readlink /sys/class/net/wlan0/device/driver


            which would provide the relative path as in



            ../../../../bus/pci/drivers/ath5k


            In my case due to systemd and predictive interface naming, the interface is named differently and produces



            $  readlink /sys/class/net/wlp2s0/device/driver
            ../../../../bus/pci/drivers/ath9k


            The resulting directory path contains subdirectories module/parameters/ where there will be files for each parameter containing their current value. Thus, if I edit the /etc/modprobe/ath9k.conf file and reinsert the module, the result is as follows:



            # After editing the conf file to set parameter to 1
            $ sudo sh -c 'modprobe -r ath9k ; sleep 3; modprobe ath9k'
            $ sudo cat /sys/class/net/wlp2s0/device/driver/../../../../bus/pci/drivers/ath9k/module/parameters/ps_enable
            1
            # after editing the file and setting parameter to 0
            $ sudo sh -c 'modprobe -r ath9k ; sleep 3; modprobe ath9k'
            $ sudo cat /sys/class/net/wlp2s0/device/driver/../../../../bus/pci/drivers/ath9k/module/parameters/ps_enable
            0


            The command can be combined as well.



            $ cat  "$(readlink -f /sys/class/net/wlp2s0/device/driver/)"/module/parameters/ps_enable
            0


            If you do have desktop environment and dbus running, as well as qdbus or dbus-send installed, such information can be queried via Network Manager's dbus interface ( though it requires figuring out the object path of each individual device, and probably would be better written in Python or C )



            $ qdbus --system org.freedesktop.NetworkManager /org/freedesktop/NetworkManager/Devices/14 org.freedesktop.NetworkManager.Device.Driver
            ath9k





            share|improve this answer






























              2














              Apparently such information is contained within /sys filesystem. According to Gilles's answer on the relevant post, in order to find the driver in use by interface you would execute



              readlink /sys/class/net/wlan0/device/driver


              which would provide the relative path as in



              ../../../../bus/pci/drivers/ath5k


              In my case due to systemd and predictive interface naming, the interface is named differently and produces



              $  readlink /sys/class/net/wlp2s0/device/driver
              ../../../../bus/pci/drivers/ath9k


              The resulting directory path contains subdirectories module/parameters/ where there will be files for each parameter containing their current value. Thus, if I edit the /etc/modprobe/ath9k.conf file and reinsert the module, the result is as follows:



              # After editing the conf file to set parameter to 1
              $ sudo sh -c 'modprobe -r ath9k ; sleep 3; modprobe ath9k'
              $ sudo cat /sys/class/net/wlp2s0/device/driver/../../../../bus/pci/drivers/ath9k/module/parameters/ps_enable
              1
              # after editing the file and setting parameter to 0
              $ sudo sh -c 'modprobe -r ath9k ; sleep 3; modprobe ath9k'
              $ sudo cat /sys/class/net/wlp2s0/device/driver/../../../../bus/pci/drivers/ath9k/module/parameters/ps_enable
              0


              The command can be combined as well.



              $ cat  "$(readlink -f /sys/class/net/wlp2s0/device/driver/)"/module/parameters/ps_enable
              0


              If you do have desktop environment and dbus running, as well as qdbus or dbus-send installed, such information can be queried via Network Manager's dbus interface ( though it requires figuring out the object path of each individual device, and probably would be better written in Python or C )



              $ qdbus --system org.freedesktop.NetworkManager /org/freedesktop/NetworkManager/Devices/14 org.freedesktop.NetworkManager.Device.Driver
              ath9k





              share|improve this answer




























                2












                2








                2







                Apparently such information is contained within /sys filesystem. According to Gilles's answer on the relevant post, in order to find the driver in use by interface you would execute



                readlink /sys/class/net/wlan0/device/driver


                which would provide the relative path as in



                ../../../../bus/pci/drivers/ath5k


                In my case due to systemd and predictive interface naming, the interface is named differently and produces



                $  readlink /sys/class/net/wlp2s0/device/driver
                ../../../../bus/pci/drivers/ath9k


                The resulting directory path contains subdirectories module/parameters/ where there will be files for each parameter containing their current value. Thus, if I edit the /etc/modprobe/ath9k.conf file and reinsert the module, the result is as follows:



                # After editing the conf file to set parameter to 1
                $ sudo sh -c 'modprobe -r ath9k ; sleep 3; modprobe ath9k'
                $ sudo cat /sys/class/net/wlp2s0/device/driver/../../../../bus/pci/drivers/ath9k/module/parameters/ps_enable
                1
                # after editing the file and setting parameter to 0
                $ sudo sh -c 'modprobe -r ath9k ; sleep 3; modprobe ath9k'
                $ sudo cat /sys/class/net/wlp2s0/device/driver/../../../../bus/pci/drivers/ath9k/module/parameters/ps_enable
                0


                The command can be combined as well.



                $ cat  "$(readlink -f /sys/class/net/wlp2s0/device/driver/)"/module/parameters/ps_enable
                0


                If you do have desktop environment and dbus running, as well as qdbus or dbus-send installed, such information can be queried via Network Manager's dbus interface ( though it requires figuring out the object path of each individual device, and probably would be better written in Python or C )



                $ qdbus --system org.freedesktop.NetworkManager /org/freedesktop/NetworkManager/Devices/14 org.freedesktop.NetworkManager.Device.Driver
                ath9k





                share|improve this answer















                Apparently such information is contained within /sys filesystem. According to Gilles's answer on the relevant post, in order to find the driver in use by interface you would execute



                readlink /sys/class/net/wlan0/device/driver


                which would provide the relative path as in



                ../../../../bus/pci/drivers/ath5k


                In my case due to systemd and predictive interface naming, the interface is named differently and produces



                $  readlink /sys/class/net/wlp2s0/device/driver
                ../../../../bus/pci/drivers/ath9k


                The resulting directory path contains subdirectories module/parameters/ where there will be files for each parameter containing their current value. Thus, if I edit the /etc/modprobe/ath9k.conf file and reinsert the module, the result is as follows:



                # After editing the conf file to set parameter to 1
                $ sudo sh -c 'modprobe -r ath9k ; sleep 3; modprobe ath9k'
                $ sudo cat /sys/class/net/wlp2s0/device/driver/../../../../bus/pci/drivers/ath9k/module/parameters/ps_enable
                1
                # after editing the file and setting parameter to 0
                $ sudo sh -c 'modprobe -r ath9k ; sleep 3; modprobe ath9k'
                $ sudo cat /sys/class/net/wlp2s0/device/driver/../../../../bus/pci/drivers/ath9k/module/parameters/ps_enable
                0


                The command can be combined as well.



                $ cat  "$(readlink -f /sys/class/net/wlp2s0/device/driver/)"/module/parameters/ps_enable
                0


                If you do have desktop environment and dbus running, as well as qdbus or dbus-send installed, such information can be queried via Network Manager's dbus interface ( though it requires figuring out the object path of each individual device, and probably would be better written in Python or C )



                $ qdbus --system org.freedesktop.NetworkManager /org/freedesktop/NetworkManager/Devices/14 org.freedesktop.NetworkManager.Device.Driver
                ath9k






                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited 2 hours ago

























                answered 3 hours ago









                Sergiy KolodyazhnyySergiy Kolodyazhnyy

                73.9k9154323




                73.9k9154323






























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