I've got an update if anyone is trying this.

So the WIFI stopped again for not so well known reasons. I'm guessing that it happened after a software/firmware update. I had to tweak it again. This time it's a bit hacky, but it works.

Login as root and add this to your crontab:

crontab -e

@reboot /usr/bin/tvservice -o
@reboot /usr/bin/vcgencmd display_power 0

@reboot sleep 5; /usr/bin/tvservice -o
@reboot sleep 5; /usr/bin/vcgencmd display_power 0

@reboot sleep 60; /usr/bin/tvservice -o
@reboot sleep 60; /usr/bin/vcgencmd display_power 0

Seems that I've got to do that several times after boot. I couldn't just put it in /etc/rc.local

Ugly, but it works!

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