I have a raspberry pi 4 with Hyperion image and I try to run the LEDs with my old sedu controller. I can configure it, as well as my USB-3 HDMI grabber. The grabbing sems to work, but there is no output on the LEDs. I also tried to run the LEDs using the Hyperion controller app without success.
Any idea wht could cause this? The only error I saw is "Lock/Unlock Handler - Session bus is not connected". How can I debug this in detail?