Hello, First of all, thank you very much for your support and your work on the system. I can imagine how much work goes into this project. As feedback, I would like to share my findings. As I said, I have little knowledge of Linux. But maybe they will help others. The downgrade to kernel 5.4 was unsuccessful under "jammy". It just didn't work. I loaded “bookworm” and it worked there without any problems. Of course I'm not an expert, but I followed the same steps. Anyway, just for information. You were right, under kernel 5.4 the "rc.local" is evaluated with the hdparm command and works. I continued testing. On kernel 6.1 I uninstalled "hdparm" and installed "hd-idle". Under Kernel 6.1 "hd-idle" works without problems. I'm excited. So from my point of view the following conclusion: Kernel 5.4 "hdparm" does not work under Kernel 6.1. I continue to use Kernel 6.1 and send my hard drives to sleep with "hd-idle". You can certainly assess or classify my findings better. In any case, my problem is solved with your support. Thank you for that!!! I found out that “plex” can be installed under armbian-config. My system runs very smoothly with Armbian + Plex on my XU-4. Thank you!!!!
pinie_pinie got a reaction from Igor in Odroid XU-4 NAS Hard drives automatically in standby