Read the statement by Michael Teeuw here.
MMM-Remote-control all working except for monitor on and off
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 @karsten13 said in MMM-Remote-control all working except for monitor on and off: docker logs mm this is the logs output of the error [05.07.2022 14:31.43.589] [LOG] Error: Command failed: vcgencmd display_power 0 
 vcgencmd: error while loading shared libraries: libvchiq_arm.so.0: cannot open shared object file: No such file or directoryat ChildProcess.exithandler (node:child_process:408:12) at ChildProcess.emit (node:events:526:28) at maybeClose (node:internal/child_process:1092:16) at Socket.<anonymous> (node:internal/child_process:451:11) at Socket.emit (node:events:526:28) at Pipe.<anonymous> (node:net:687:12) {killed: false, 
 code: 127,
 signal: null,
 cmd: ‘vcgencmd display_power 0’
 }
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 I can’t test this myself at the moment because I have no pi left for a fresh install. I had to reinstall my MM what does this mean exactly? Did you setup MM-OS from scratch? 
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 yes completely from scratch, i used the latest MM-OS version: 
 (2022-03-08_2022-01-28-magicmirroros-bullseye-armhf-lite-0.3.0)
 and reinstalled all the modules on a RP3b+
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 you are using a nightly build which is not an official release. I was not aware of a bullseye version and this setup was never tested with bullseye. So I recommend to use a buster version. 
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 @karsten13 
 ah thank you for your help
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 @diemen112 @karsten13 For bullseye I needed to change the display driver to the fake kms one ( dtoverlay=vc4-fkms-v3din/boot/config.txt) to have any effect of vcgencmd.
 Afterwards vcgencmd only worked from the host, but not from @karsten13’s docker container. There I ran into the same problem with my MMM-Gestures module:[09.10.2022 17:54.49.927] [LOG] Sun Oct 09 2022 17:54:49 GMT+0200 (Central European Summer Time): exec error: Error: Command failed: vcgencmd display_power 0 vcgencmd: error while loading shared libraries: libvchiq_arm.so.0: cannot open shared object file: No such file or directoryI fixed it by mounting two more files from the host, my volume mounts now are: volumes: - ../mounts/config:/opt/magic_mirror/config - ../mounts/modules:/opt/magic_mirror/modules - ../mounts/css:/opt/magic_mirror/css - /tmp/.X11-unix:/tmp/.X11-unix - /opt/vc:/opt/vc/:ro - /usr/bin/vcgencmd:/usr/bin/vcgencmd - /usr/lib/arm-linux-gnueabihf/libvchiq_arm.so.0:/usr/lib/arm-linux-gnueabihf/libvchiq_arm.so.0 - /usr/lib/arm-linux-gnueabihf/libvcos.so.0:/usr/lib/arm-linux-gnueabihf/libvcos.so.0 - /var/run/dbus/system_bus_socket:/var/run/dbus/system_bus_socket
 

