cpu usage is high under battery power ubuntu 18.04












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I've noticed since the very 1'st day I installed ubuntu 18.04 my battery life surprisingly reduced.so I checked system monitor. I noticed that only one of my CPU core is always run on high usage while other cores are in an idle stage. so I installed laptop model tools utility. then under the plugged stage, all the CPU cores work simultaneously with the same usage.i`ve attached two screenshots showing that 1st one is while on battery power 2nd one is just after plugged into power code.anyone can help me to optimize my CPU under the battery power?



CPU usage under battery power



CPU usage under battery power



CPU usage just after plugged into power



CPU usage just after plugged into power code










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    0















    I've noticed since the very 1'st day I installed ubuntu 18.04 my battery life surprisingly reduced.so I checked system monitor. I noticed that only one of my CPU core is always run on high usage while other cores are in an idle stage. so I installed laptop model tools utility. then under the plugged stage, all the CPU cores work simultaneously with the same usage.i`ve attached two screenshots showing that 1st one is while on battery power 2nd one is just after plugged into power code.anyone can help me to optimize my CPU under the battery power?



    CPU usage under battery power



    CPU usage under battery power



    CPU usage just after plugged into power



    CPU usage just after plugged into power code










    share|improve this question



























      0












      0








      0








      I've noticed since the very 1'st day I installed ubuntu 18.04 my battery life surprisingly reduced.so I checked system monitor. I noticed that only one of my CPU core is always run on high usage while other cores are in an idle stage. so I installed laptop model tools utility. then under the plugged stage, all the CPU cores work simultaneously with the same usage.i`ve attached two screenshots showing that 1st one is while on battery power 2nd one is just after plugged into power code.anyone can help me to optimize my CPU under the battery power?



      CPU usage under battery power



      CPU usage under battery power



      CPU usage just after plugged into power



      CPU usage just after plugged into power code










      share|improve this question
















      I've noticed since the very 1'st day I installed ubuntu 18.04 my battery life surprisingly reduced.so I checked system monitor. I noticed that only one of my CPU core is always run on high usage while other cores are in an idle stage. so I installed laptop model tools utility. then under the plugged stage, all the CPU cores work simultaneously with the same usage.i`ve attached two screenshots showing that 1st one is while on battery power 2nd one is just after plugged into power code.anyone can help me to optimize my CPU under the battery power?



      CPU usage under battery power



      CPU usage under battery power



      CPU usage just after plugged into power



      CPU usage just after plugged into power code







      18.04 power-management laptop battery cpu






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Sep 29 '18 at 23:51









      WinEunuuchs2Unix

      45.2k1084175




      45.2k1084175










      asked Sep 29 '18 at 14:46









      Nayananga MuhandiramNayananga Muhandiram

      15




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          1 Answer
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          Since I did full research on this, I think I can answer my question by my self. I was able to fix this issue, The problem was Ubuntu does not support Intel new power management options. This was a kernel bug which was fixed by ubnutu little days ago.



          https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789214



          so try these steps,




          1. sudo nano /etc/default/grub

          2. replace the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" with
            GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=0"

          3. save it (CTRL+O)

          4. sudo update-grub

          5. sudo reboot


          *(it is important to use intel_idle.max_cstate=0)



          I will reference a similar kind of question to read and understand the situation a little more, but it`s the answer is different from this,



          Clevo N850EL crashes/freezes Ubuntu 18.04.1 frequently






          share|improve this answer























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            0














            Since I did full research on this, I think I can answer my question by my self. I was able to fix this issue, The problem was Ubuntu does not support Intel new power management options. This was a kernel bug which was fixed by ubnutu little days ago.



            https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789214



            so try these steps,




            1. sudo nano /etc/default/grub

            2. replace the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" with
              GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=0"

            3. save it (CTRL+O)

            4. sudo update-grub

            5. sudo reboot


            *(it is important to use intel_idle.max_cstate=0)



            I will reference a similar kind of question to read and understand the situation a little more, but it`s the answer is different from this,



            Clevo N850EL crashes/freezes Ubuntu 18.04.1 frequently






            share|improve this answer




























              0














              Since I did full research on this, I think I can answer my question by my self. I was able to fix this issue, The problem was Ubuntu does not support Intel new power management options. This was a kernel bug which was fixed by ubnutu little days ago.



              https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789214



              so try these steps,




              1. sudo nano /etc/default/grub

              2. replace the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" with
                GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=0"

              3. save it (CTRL+O)

              4. sudo update-grub

              5. sudo reboot


              *(it is important to use intel_idle.max_cstate=0)



              I will reference a similar kind of question to read and understand the situation a little more, but it`s the answer is different from this,



              Clevo N850EL crashes/freezes Ubuntu 18.04.1 frequently






              share|improve this answer


























                0












                0








                0







                Since I did full research on this, I think I can answer my question by my self. I was able to fix this issue, The problem was Ubuntu does not support Intel new power management options. This was a kernel bug which was fixed by ubnutu little days ago.



                https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789214



                so try these steps,




                1. sudo nano /etc/default/grub

                2. replace the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" with
                  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=0"

                3. save it (CTRL+O)

                4. sudo update-grub

                5. sudo reboot


                *(it is important to use intel_idle.max_cstate=0)



                I will reference a similar kind of question to read and understand the situation a little more, but it`s the answer is different from this,



                Clevo N850EL crashes/freezes Ubuntu 18.04.1 frequently






                share|improve this answer













                Since I did full research on this, I think I can answer my question by my self. I was able to fix this issue, The problem was Ubuntu does not support Intel new power management options. This was a kernel bug which was fixed by ubnutu little days ago.



                https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789214



                so try these steps,




                1. sudo nano /etc/default/grub

                2. replace the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" with
                  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=0"

                3. save it (CTRL+O)

                4. sudo update-grub

                5. sudo reboot


                *(it is important to use intel_idle.max_cstate=0)



                I will reference a similar kind of question to read and understand the situation a little more, but it`s the answer is different from this,



                Clevo N850EL crashes/freezes Ubuntu 18.04.1 frequently







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 14 mins ago









                Nayananga MuhandiramNayananga Muhandiram

                15




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