Fan will turn on when notebook reaches a temperature of 45 degrees celsius (according to thermal zone readout). From there, fan blows at full power (which is really noisy!) and will not stop unless machine is shut down. Odd: in /proc/acpi/thermal_zone/THRM/trip_points: critical (S5): 155 C passive: 100 C: tc1=2 tc2=5 tsp=0 devices=0xdff5b6e8 echoing other values into that file (x:x:x:x:x) does not cause errors but doesnt do anything. The directory /proc/acpi/fan is empty. dmesg shows multiple messages such as these: acpi_thermal-0417 [08] thermal_get_trip_point: Invalid active threshold [0] acpi_thermal-0417 [11] thermal_get_trip_point: Invalid active threshold [0] Will attach DSDT as provided by the vendor later. Thanks for thinking about this :-)
Created attachment 8237 [details] DSDT as provided by the vendor
Created attachment 8238 [details] dmesg, full version should have mentioned: this is an AMD64 system; chipset is nvidia nforce 410.
Does windows work, and NO Fan problem?
Ummm.... I never tested that. I will try to get a windows installed for testing, and report back. Didnt use that system for years.
Timo, No fan device defined in your DSDT, so no fan control is possible though ACPI fuctionality. The reason of 'Invalid active threshold [0]' messages is that '_AC0' (active trip point) object was defined without '_AL0' (device list for active cooling) in thermal zone 'THRM'. So, I'm rejecting this bug as it has nothing to do with ACPI.