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A New Chapter for MagicMirror: The Community Takes the Lead
Read the statement by Michael Teeuw here.

Electron CPU usage

Scheduled Pinned Locked Moved Troubleshooting
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  • M Offline
    MichMich Admin
    last edited by May 20, 2018, 11:41 AM

    I added some info about the Open GL driver to the Wiki:
    https://github.com/MichMich/MagicMirror/wiki/Configuring-the-Raspberry-Pi#enable-the-open-gl-driver-to-decrease-electrons-cpu-usage

    H 1 Reply Last reply May 23, 2018, 7:59 PM Reply Quote 3
    • H Offline
      Hein-Jan @MichMich
      last edited by May 23, 2018, 7:59 PM

      @michmich

      I seem to be running into some kind if trouble. My SD card failed, so I had to do a clean install. I decided to immediately go for the full KMS driver.
      “$ tail /boot/config.txt | grep dtoverlay” results in “dtoverlay=vc4-kms-v3d”.

      The CPU usage is alright, but “/home/pi/.pm2/logs/mm-error-o.log” states:

      libGL error: MESA-LOADER: failed to retrieve device information
      MESA-LOADER: failed to retrieve device information
      MESA-LOADER: failed to retrieve device information
      

      I am having trouble with the monitor. I am using MMM-Remote-Control.
      “MONITOROFF” results in “/home/pi/.pm2/logs/mm-error-o.log”:

      Powering off HDMI
      

      “MONITORON” results in “/home/pi/.pm2/logs/mm-error-o.log”:

      Powering on HDMI with preferred settings
      
      [E] Failed to power on HDMI with preferred settings
      
      { Error: Command failed: tvservice --preferred && sudo chvt 6 && sudo chvt 7
      [E] Failed to power on HDMI with preferred settings
      
          at ChildProcess.exithandler (child_process.js:217:12)
          at emitTwo (events.js:106:13)
          at ChildProcess.emit (events.js:194:7)
          at maybeClose (internal/child_process.js:899:16)
          at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
        killed: true,
        code: null,
        signal: 'SIGTERM',
        cmd: 'tvservice --preferred && sudo chvt 6 && sudo chvt 7' }
      Powering off HDMI
      

      I may be wrong but I feel this is related to the Full KMS driver.

      Can anyone confirm? Does anyone have a solution?
      I am way out of my depth here…

      C 1 Reply Last reply May 24, 2018, 1:53 PM Reply Quote 0
      • D Offline
        Dom1n1c
        last edited by May 24, 2018, 6:13 AM

        @Hein-Jan I got the same issue.
        A few minutes, the monitor could be controlled, but then “tvservice -p” fails to power on the monitor.

        1 Reply Last reply Reply Quote 0
        • C Offline
          cdelaorden @Hein-Jan
          last edited by cdelaorden May 24, 2018, 2:54 PM May 24, 2018, 1:53 PM

          @hein-jan @Dom1n1c

          Please use the fake kms driver instead “dtoverlay=vc4-fkms-v3d”

          it its known that the full kms driver isnt compatible with tvservice plus other restrictions

          EDIT:
          Also with the fake KMS you can rotate the display from /boot/config.txt so I suggest @michmich using it as the preferred method in the wiki

          1 Reply Last reply Reply Quote 2
          • S Offline
            schmo90
            last edited by May 24, 2018, 8:15 PM

            @cdelaorden said in Electron CPU usage:

            the full kms driver isnt compatib

            hy now i use the fake kms driver, everything is working fine and realy fast.
            but i have the problem that the mirror will go to a black screen after some hours.

            only a pm2 restart mm helps in this case -.-

            C 1 Reply Last reply May 24, 2018, 8:58 PM Reply Quote 0
            • C Offline
              cdelaorden @schmo90
              last edited by May 24, 2018, 8:58 PM

              @schmo90 mmm havent had that problem, everything its working fine

              Have you deactivated the screensaver as its shown in the wiki?

              Also, are you using a module like MMM-Remote-Control to turn off the screen?

              If you see a black screen and the mouse but nothing else you are probably missing “sudo chvt 6 && sudo chvt 7” in your statement after turning hdmi back on. You can test it in ssh after forcing the issue.

              Also if you are concatenating commands like Hein-Jan did with “tvservice --preferred && sudo chvt 6 && sudo chvt 7” have in mind that commands after && are only executed if no errors are found. So maybe “tvservice -p” its working correctly but its giving some feedback and things after && aren’t executed.

              You could force it by using ; as a separator instead of && so it doesn’t look for an answear

              1 Reply Last reply Reply Quote 0
              • S Offline
                schmo90
                last edited by May 25, 2018, 9:13 AM

                hy i didnot turn off the hdmi,

                i will turn off the lcd with the gpio’s

                screen is turning on normal but electron browser is showing a black screen (mous appears at moving)

                1 Reply Last reply Reply Quote 0
                • B Offline
                  binderth
                  last edited by May 29, 2018, 6:29 AM

                  adding another flavour:
                  As my Foscam FI9900P got an ONVIF-Update lately and is now capable of RTSP-streaming I installed MMM-RTSPStream.

                  • activated fake (or full) OpenGL Desktop driver:
                    omxplayer crashes
                  • activated non-GL desktop driver:
                    omxplayer runs

                  So, as I see it, the omxplayer problem doesn’t concern MagicMirror - is there another way to reduce Electron CPU usage - except using an Open-GL dekstop driver?

                  PS: activating fake KMS reduced CPU usage as recommended in this thread - but I’d like to have the video-stream of my cam on the MM (unfortunately it doesn’t provide MJPEG)

                  C 1 Reply Last reply May 29, 2018, 1:00 PM Reply Quote 0
                  • C Offline
                    cdelaorden @binderth
                    last edited by cdelaorden May 29, 2018, 1:12 PM May 29, 2018, 1:00 PM

                    hi @binderth
                    the fake-kms was created for keeping omxplayer compatibility but you need to add the “–no-osd” flag to the omxplayer command line

                    you might want to try it

                    dont bet on it, but changing line 101 of node_helper.js to

                    var args = ["--no-osd", "--live", "--video_queue", "4", "--fps", "30",
                    

                    might do the trick

                    1 Reply Last reply Reply Quote 0
                    • V Offline
                      vinp Module Developer
                      last edited by Jul 4, 2018, 8:26 PM

                      MM 2.4.1 - if anyone is trying to look for it while searching for forums. Apologies if it has already been stated

                      So i’ve done it both ways:
                      dtoverlay=vc4-kms-v3d
                      I noticed that my CPU temp is well into the 60-70 degree Celsius with CPU loads mostly in the 1.x, 2.x, and sometimes 3.x ranges

                      When i try the other way :
                      dtoverlay=vc4-fkms-v3d
                      CPU is much lower in temp under 50 degrees Celsius and CPU load rarely goes above 1.x
                      and i am able to use the tvservice -o and tvservice -p to schedule my monitor to go on and off at certain times

                      Hopefully this helps anyone searching for this issue on new installs like myself

                      1 Reply Last reply Reply Quote 4
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