psygnosis

Yes I have the heat sink and a thermal pad: Time CPU load %cpu %sys %usr %nice %io %irq Tcpu C.St. 19:42:28 816 MHz 0.00 0% 0% 0% 0% 0% 0% 51,6 °C 0/4 19:42:33 816 MHz 0.00 0% 0% 0% 0% 0% 0% 50,5 °C 0/4 19:42:38 816 MHz 0.00 0% 0% 0% 0% 0% 0% 52,8 °C 0/4 Armbian 23.02.2 Bullseye with Linux 5.15.93-sunxi Ambient temp is quite hot these days it's like maybe 32°C maybe more

Sorry for the late reply. I had some spare time and I've installed bookworm 25.5.1 Time CPU load %cpu %sys %usr %nice %io %irq Tcpu C.St. 20:38:51 1296 MHz 0.41 7% 0% 2% 0% 3% 0% 58.1 °C 0/7 20:38:56 480 MHz 0.38 0% 0% 0% 0% 0% 0% 54.4 °C 0/7 20:39:01 480 MHz 0.35 1% 0% 0% 0% 0% 0% 59.8 °C 0/7 20:39:06 480 MHz 0.32 0% 0% 0% 0% 0% 0% 54.8 °C 0/7 20:39:11 480 MHz 0.29 0% 0% 0% 0% 0% 0% 56.4 °C 0/7 20:39:16 480 MHz 0.27 0% 0% 0% 0% 0% 0% 55.5 °C 0/7 20:39:21 480 MHz 0.25 0% 0% 0% 0% 0% 0% 57.6 °C 0/7 20:39:27 480 MHz 0.23 0% 0% 0% 0% 0% 0% 56.2 °C 0/7 20:39:32 480 MHz 0.21 0% 0% 0% 0% 0% 0% 54.2 °C 0/7 20:39:37 480 MHz 0.19 0% 0% 0% 0% 0% 0% 56.1 °C 0/7 20:39:42 480 MHz 0.18 0% 0% 0% 0% 0% 0% 54.1 °C 0/7 20:39:47 480 MHz 0.16 0% 0% 0% 0% 0% 0% 58.0 °C 0/7 20:39:52 480 MHz 0.15 0% 0% 0% 0% 0% 0% 57.0 °C 0/7^C Actually you had some difference in temp between bookworm and bullseye

Hi, I have 2 OPi1 that I want to use for some test projects. One project consist just on PiHole, the other one on Tailscale. Since with newer kernel I have high temperature on idle (like 70°C) can you advice me an old version that maybe has a "better" thermal management? Thank you so much, if I'm saying something stupid please tell me, maybe I just need to tune something like disable hdmi, gpu etc...