Fedora-IoT-36-20220405.0.aarch64.raw.xz Fedora-IoT-36-20220411.0.aarch64.raw.xz Fedora-IoT-36-20220413.0.aarch64.raw.xz Fedora-IoT-36-20220426.0.aarch64.raw.xz /boot/efi/config.txt: dtoverlay=gpio-fan,gpiopin=14,temp=80000 Raspberry Pi 4b case-fan/gpio-fan control with dtoverlay is working, fan is triggered on at temp>80°C, but HYSTERESIS 70<80°C not working: fan is flipping on/off around ~80°C, fan should NOT be triggered off before temp falls below 70°C! To compare, I booted Raspian OS: 2022-04-04-raspios-bullseye-arm64-lite.img.xz (Kernel 5.15.32-v8+ aarch64) /boot/config.txt: dtoverlay=gpio-fan,gpiopin=14,temp=80000 and here the hysteresis _is_ working as expected: temp>80°C => case-fan/gpio-fan is switched on temp<70°C => case-fan/gpio-fan is switched off If the temp is between 70 and 80°C, the fan is not triggered on/off! See also https://bugzilla.redhat.com/show_bug.cgi?id=2047329 which was originally reported for Fedora 35, where gpio-fan control did not work at all.
Having multiple bugs for the same problem is likely not overly useful. Duping to the other bug as there's more info there. *** This bug has been marked as a duplicate of bug 2047329 ***