DietPi v8.9.2 specific raspberrypi-sys-mods breaks loading of some drivers

[f-laurens]

For some unknown reason, after updating from DietPi v8.8.1 to v8.9.2, some drivers do not load anymore on my Raspberry Pi
(no kernel error messages, the drivers just do not load).
I have kept same kernel version (5.15.32) so this is not a driver upgrade/rebuild issue.
My guess is that this might be related to the new DietPi specific version of raspberrypi-sys-mods...

What would be the way to reinstall the standard (20220915) version of raspberrypi-sys-mods, in order to validate this?

[MichaIng]

Which drivers do you mean in particular? We have a report that some LCD driver may not load correctly, leading to backlight sysfs entry (so backlight cannot be toggled).

Yes please test whether downgrading the package solves it again.

[f-laurens]

Which drivers do you mean in particular?

The driver that fails to load in my case is this specific NFC driver.

[f-laurens]

I downgraded package raspberrypi-sys-mods from version 2:20220915-dietpi1 to the original 20220915 version thru:

sudo apt-get remove raspberrypi-sys-mods
sudo apt-get autoremove
sudo apt-get install raspberrypi-sys-mods=20220915

and this indeed solves the problem for me: after rebooting, the NFC driver now loads correctly.

[Joulinar]

thanks for sharing. Confirmed this solution by another user on our forum.

https://dietpi.com/forum/t/boot-problem-since-last-dietpi-upgrade/14538

[MichaIng]

I think I found it, please test:

cd /tmp
curl -O https://dietpi.com/downloads/binaries/raspberrypi-sys-mods.deb
dpkg -i raspberrypi-sys-mods.deb
rm raspberrypi-sys-mods.deb

[f-laurens]

I think I found it, please test:

This new version 2:20220915-dietpi2 indeed fixes the problem.
Thank!

[MichaIng]

Many thanks for the feedback 👍.