Hello,
I have 3 Compute Module 5 and a Raspberry Pi PoE+ HAT. Weirdly, the fan spins only with 1 of the boards. I have tried several things already, e.g., from here: viewtopic.php?t=240729. But nothing works. The only consistent thing is that I get this:on the CM5 Module that works (Lite version) and this:on the other 2 modules (they both have eMMC and I boot from the eMMC).
When I try to load the rpi-poe-plus overlay I get this:I don't mind if the fan runs at 100% all the time, but I just need it to work; otherwise, the module overheats quickly.
Any advice is welcome.
Regards,
David
I have 3 Compute Module 5 and a Raspberry Pi PoE+ HAT. Weirdly, the fan spins only with 1 of the boards. I have tried several things already, e.g., from here: viewtopic.php?t=240729. But nothing works. The only consistent thing is that I get this:
Code:
ls /sys/class/thermal/cooling_device0 thermal_zone0Code:
ls /sys/class/thermal/thermal_zone0When I try to load the rpi-poe-plus overlay I get this:
Code:
sudo dtoverlay -v rpi-poe-plusDTOVERLAY[debug]: using platform 'bcm2712'DTOVERLAY[debug]: overlay map loadedrun_cmd: which dtoverlay-pre >/dev/null 2>&1 && dtoverlay-preDTOVERLAY[debug]: loading file '/boot/firmware/overlays/rpi-poe-plus.dtbo'DTOVERLAY[debug]: fragment 7 disabledDTOVERLAY[debug]: fragment 8 disabledDTOVERLAY[debug]: merge_fragment(/fragment@6/__overlay__/poe@51,/fragment@11/__overlay__)DTOVERLAY[debug]: merge_fragment(/fragment@6/__overlay__/poe@51/rpi-poe-power-supply@f2,/fragment@11/__overlay__/rpi-poe-power-supply@f2)DTOVERLAY[debug]: +prop(compatible)DTOVERLAY[debug]: +prop(reg)DTOVERLAY[debug]: +prop(status)DTOVERLAY[debug]: merge_fragment() endDTOVERLAY[debug]: merge_fragment() endDTOVERLAY[debug]: wrote 4518 bytes to '/tmp/.dtoverlays/1_rpi-poe-plus.dtbo'DTOVERLAY[debug]: wrote 4518 bytes to '/sys/kernel/config/device-tree/overlays/1_rpi-poe-plus/dtbo'* Failed to apply overlay '1_rpi-poe-plus' (kernel)run_cmd: which dtoverlay-post >/dev/null 2>&1 && dtoverlay-postAny advice is welcome.
Regards,
David
Statistics: Posted by davm00 — Tue Oct 07, 2025 9:16 pm