Came here as I was running into the exact same error after upgrading to v10 with a clean install (I should mention I'm running on a Raspi using HyperBian and reflashed my SD card with the new Image).
Device disabled, device 'ws281x' signals error: 'Failed to open. Error message: mmap() failed
diegoat, just wanted to say that Cslegers's post ended up working for me... however, he added a 'd', so it read 'hyperiond' instead of 'hyperion'. So the commands should look like this:
Code
sudo systemctl disable --now hyperion@pi
sudo systemctl enable --now hyperion@root
sudo reboot nowThis did require me to reconfigure everything as cslegers mentioned, but at least my LEDs are turning on now. So thanks Cslegers.