cronjob vcgencmd display_power

[megagprime]

this is on pi3 and i also tried modifying boot/config.txt file

Enable DRM VC4 V3D driver

dtoverlay=vc4-kms-v3d (changed to fkms)
max_framebuffers=2

[mumblebaj]

@megagprime This is how I run mine. I have 2 scripts and I call these scripts from the cron and not the actual vcgencmd

And in the scripts I run the following:

This works perfectly for me. Give it a go and let’s see if that works. I run an RPI 3B.

[megagprime]

@mumblebaj ya even this didnt work, maybe i need to change my boot/config file back to kms

[megagprime]

@megagprime anybody have any ideas why this doesnt work and should i change my boot file?

[Nneuland]

@megagprime
Did you ever figure this out? I’m having the same issue

[megagprime]

@Nneuland nope, still no dice. building a new mm now, will update

[sdetweil]

@megagprime @Nneuland depending on the board firmware, the vcgencmd may or may not work

this was reported and worked thru in the fall.
see https://forum.magicmirror.builders/topic/17185/pir-sensor-problem-after-restart-raspi/20?_=1672509926391

[megagprime]

@sdetweil hi there, i still dont see a fix or alternative workaround. The commands themselves work i just cant get it to work with cronjon :(

[sdetweil]

@megagprime what user is cron executing them as?

what user do you use when testing?

cron is root by default unless u add another parm for the username

[megagprime]

@sdetweil i use sudo for cron and root vcgencmd display_power for the command.

no idea if i am doing this right but like i said, i used to work lol

[megagprime]

@sdetweil i use sudo for cron and have tried root and just the vcgencmd, neither work

[sdetweil]

@megagprime I think vcgencmd needs a DISPLAY env variable

[megagprime]

@sdetweil yes i use vcgencmd DISPLAY_POWER 0 or 1, like i said those commands work just fine just not in cron

[sdetweil]

@megagprime https://forum.magicmirror.builders/topic/16865/mmm-remotecontrol-or-vcgencmd-issue/5?_=1673646835489 maybe