SPI on = Black Screen

[munsterrr]

Probably something silly I’m missing but I don’t mind looking the part.

Both the older dragon os and the current rex(stock) Trixie with just aiov2_ctl (with recent update) if I go into raspi-config (sudo) and turn on SPI in interfaces, the screen goes black and I cannot get it back. Plug it into monitor and I can only get monitor out. Tried Wayland and tried the “screen blanking” with no luck.

What I was trying to do is setup pyMC_Repeater and skipped the first SPI steps the first time but service failed to start. Tried including the SPI steps and I’m here now. It’s actually why I tried both images because dragon gets wonky with how where things are installed.

[trinity]

@trinity

# On the CM5, using SPI causes the backlight to be disabled (TODO: why?),
# requiring the operating system to re-enable it. This is necessary if using
# other things on the SPI bus, such as the HackerGadgets SDR board. Comment
# this line out to re-enable it.
dtparam=spi=off

I haven’t gotten around to fixing this on my own uConsole, but I might start here:

@Sumpfkrieger

For that it was also important to enable only dtoverlay=spi1-1cs and NOT dtparam=spi=on, because otherwise the display won’t work.

[Rex]

I have a package called clockworkpi-backlight in my repo that will solve the problem with spi fully enabled.