SamuraiJapon

laibsch, thanks for your answer. I tried several kernels from the 6.x.y series on Armbian, but the same error occurred in all of them. I think this error did not occur with the 4.14 series kernel downloaded from the board manufacturer's official website. However, when I built and started the 4.14.111+ kernel downloaded from the board manufacturer's github, the following error occurred. dmesg (Friendlycore linux kernel 4.14.111+) [ 2.243976] thermal thermal_zone0: failed to read out thermal zone (-16) It seems that there has been an error in the thermal driver (dts) of the allwinner H5 SoC for quite some time. I have already uninstalled Armbian and cannot take logs, so I would like to submit a bug report once I install Armbian again and can take logs.

I am getting a thermal zone failure message during boot, which has always happened with kernels after 6.6, at least as far as I know. Is this error actually harmful? HardWare:NanoPi NEO2 Armbian Version: Packages: Debian stable (bookworm) v25.2.3 for NanoPi Neo 2 running Armbian Linux 6.12.20-current-sunxi64 Support: DIY (community maintained) Kernel: Linux nanopineo2 6.12.20-current-sunxi64 #1 SMP Sat Mar 22 19:54:28 UTC 2025 aarch64 GNU/Linux dmesg output [ 7.018086] core: _opp_supported_by_regulators: OPP minuV: 1320000 maxuV: 1320000, not supported by regulator [ 7.018125] cpu cpu0: _opp_add: OPP not supported by regulators (1104000000) [ 7.018245] core: _opp_supported_by_regulators: OPP minuV: 1320000 maxuV: 1320000, not supported by regulator [ 7.018258] cpu cpu0: _opp_add: OPP not supported by regulators (1200000000) [ 7.018413] core: _opp_supported_by_regulators: OPP minuV: 1340000 maxuV: 1340000, not supported by regulator [ 7.018426] cpu cpu0: _opp_add: OPP not supported by regulators (1296000000) [ 7.018552] core: _opp_supported_by_regulators: OPP minuV: 1400000 maxuV: 1400000, not supported by regulator [ 7.018564] cpu cpu0: _opp_add: OPP not supported by regulators (1368000000) [ 7.019699] thermal thermal_zone0: binding cdev cpufreq-cpu0 to trip 3 failed: -22 [ 7.019785] thermal thermal_zone0: binding cdev cpufreq-cpu0 to trip 4 failed: -22 dmesg.txt