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

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