I have the default radxa image rock-5b-plus_bookworm_kde_b2 image with the fan working :- https://github.com/radxa-build/rock-5b-plus/releases/download/rsdk-b2/rock-5b-plus_bookworm_kde_b2.output.img.xz I/We need to try and find how this was built and the Linux DTD file the `uname -a` kernel reports as "Linux rock-5b-plus 6.1.84-1-rk2410" kernel. rsetup :- https://docs.radxa.com/en/rock5/rock5b/getting-started/interface-usage/fan https://github.com/radxa-pkg/rsetup Build :- https://github.com/radxa-repo/rbuild Build cancled :- https://github.com/AaronNGray/rbuild Will follow this up and try locally so I have the files !

Right, that's the downside - anyone with a different eMMC chip will see a drop in performance. I've just given that overlay a try - thank you for suggesting it. I put it in to /boot/overlay-user, then edited /boot/armbianEnv.txt to include the line user_overlays=rk3588-nanopc-t6-emmc . Unfortunately, it then failed to boot. I had to put in an SD card, boot from that, mount the eMMC partition, and then remove the overload from armbianEnv.txt to get it to boot successfully from the eMMC again.

You will certainly gain many grateful users whose devices are not equipped with an affected eMMC, but who still have to suffer from the slowdown nonetheless. Does the attached overlay work for you?rk3588-nanopc-t6-emmc.dtbo

If I understood a bit better what the script is doing, i.e. this part: Then maybe I could help with updating it to work with the Radxa products.

Raised up a PR with a patch. 🤞