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    High CPU usage by kworker

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    • Bolly
      Bolly @kristatos last edited by

      @kristatos said in High CPU usage by kworker:

      I've observed the battery usage over the week. I've used my main sim-card in an other phone and used the E4.5 with only the second sim-card and some wifi-connections. Over the week there was no unusual battery waste.
      Yesterday I plugged in my main sim-card again. The first day with both sim inserted was pretty normal, today I got a battery drain again after using a wifi connection (normally around 10% per day, now 60% in 5 hours).
      What I find strange is that normally when I press the power button to wake up the phone/screen, it takes aprox. 1,5 seconds until the screen and the backlight is switched on.
      For now the screen is on immediatly after pressing the power button, so I think something in the background isn't going to sleep as intended and so the battery drains.
      Edit:
      In dmesg there hundreds of those lines (forget the date-/timestamp):
      [Di Aug 10 12:48:23 2021] [WMT-LIB][E]wmt_lib_is_therm_ctrl_support(1175):thermal command can not be send: STP is not ready
      [Di Aug 10 12:48:23 2021] [WMT-EXP][E]_mtk_wcn_wmt_therm_ctrl(232):thermal ctrl function not supported

      If you are brave, switch to RC, this is solved. 🙂

      2015-Now (Daily use) : BQ Aquaris E4.5 Ubuntu edition
      2016-Now (Daily use) : BQ Aquaris M10 FHD Betatester
      2020-Now : PinePhone Braveheart & CE UBports

      K 1 Reply Last reply Reply Quote 0
      • K
        kristatos @Bolly last edited by kristatos

        @bolly Is it really solved or do you think it is solved? Have you already switched to rc to get rid of this issue?

        edit. I think you mean this bug-report, right?

        Bolly 1 Reply Last reply Reply Quote 0
        • Bolly
          Bolly @kristatos last edited by

          @kristatos said in High CPU usage by kworker:

          @bolly Is it really solved or do you think it is solved? Have you already switched to rc to get rid of this issue?

          It's already fixed, and I switched to RC as I said in the previous message (maybe I didn't express myself well). See the new screenshot, but the one from the other day was fine too. Compare it with the first one I posted. 😁

          screenshot20210816_212018028.png

          edit. I think you mean this bug-report, right?

          I haven't looked, first time I've seen it. @kugiigi told me and I just believed it. 😹

          https://forums.ubports.com/topic/6525/high-cpu-usage-by-kworker/5

          2015-Now (Daily use) : BQ Aquaris E4.5 Ubuntu edition
          2016-Now (Daily use) : BQ Aquaris M10 FHD Betatester
          2020-Now : PinePhone Braveheart & CE UBports

          F 1 Reply Last reply Reply Quote 0
          • F
            flaun*in @Bolly last edited by

            @bolly MX4 - high power usage.jpg

            I'm still facing this problem. Very high CPU usage while flight mode.
            It's an Meizu MX4 on Release Channel (Version 113).
            I already changed my battery! The phone is almost not usable as a daily driver with this bug!
            Is there anything else I could do? How can I check if I got the fix?
            Any help, pleas?

            Bolly 1 Reply Last reply Reply Quote 0
            • Bolly
              Bolly @flaun*in last edited by

              @flaun-in said in High CPU usage by kworker:

              I'm still facing this problem. Very high CPU usage while flight mode.
              It's an Meizu MX4 on Release Channel (Version 113).
              I already changed my battery! The phone is almost not usable as a daily driver with this bug!
              Is there anything else I could do? How can I check if I got the fix?
              Any help, pleas?

              Does it give the same percentage of charge when the phone is switched off and you put it on charge?

              2015-Now (Daily use) : BQ Aquaris E4.5 Ubuntu edition
              2016-Now (Daily use) : BQ Aquaris M10 FHD Betatester
              2020-Now : PinePhone Braveheart & CE UBports

              F 1 Reply Last reply Reply Quote 0
              • F
                flaun*in @Bolly last edited by

                @bolly
                No, it's totally curious. Sometimes its more, sometimes its less!

                Shutting down the phone helps sometimes. Then there's no battery drain while being in flight mode anymore.

                Bolly 1 Reply Last reply Reply Quote 0
                • Bolly
                  Bolly @flaun*in last edited by

                  @flaun-in said in High CPU usage by kworker:

                  No, it's totally curious. Sometimes its more, sometimes its less!

                  Then your battery is out of calibration.
                  To fix it you have to discharge the whole battery and with the phone switched off charge it to 100%. (Repeat the operation until it shows the same off as on).

                  2015-Now (Daily use) : BQ Aquaris E4.5 Ubuntu edition
                  2016-Now (Daily use) : BQ Aquaris M10 FHD Betatester
                  2020-Now : PinePhone Braveheart & CE UBports

                  F 1 Reply Last reply Reply Quote 0
                  • K
                    kristatos last edited by

                    I'm on RC since monday and until now everything works like it should, no battery drain anymore. I hope it's fixed.

                    1 Reply Last reply Reply Quote 0
                    • F
                      flaun*in @Bolly last edited by

                      @bolly
                      I replaced my battery with a new one and I didn't realise this problem any more so far!

                      1 Reply Last reply Reply Quote 0
                      • F
                        flaun*in last edited by

                        photo_2021-09-01_21-34-04.jpg
                        This happens right know most of the time when I charge my phone during the night (switched off) and then turn it into flight mode while I'm working. Enormous battery drain within a few hours in flight mode!
                        So I basically always have to turn it out during a longer period I don't need it instead of using the flight mode. Very annoying!

                        Am I the only person facing this problem?
                        Any ideas? Any help welcome:)
                        Have a nice evening

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                        • K
                          kristatos last edited by

                          I'm on RC (starting with 113, now 115) with my E4.5 for over 10 days now and I haven't been affected by this bug anymore.

                          1 Reply Last reply Reply Quote 0
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