Distribution: SUSE Problem Description: ACPI 2.0b spec specifies 0-9 active cooling devices, only 2 can be controlled via /proc/acpi/thermal_zone/*/trip_points Steps to reproduce: Imagine a machine with 4 active cooling devices: critical (S5): 102 C passive: 100 C: tc1=1 tc2=2 tsp=100 devices=0xdf6cd8c0 active[0]: 80 C: devices=0xdf754680 active[1]: 65 C: devices=0xdf7545e0 active[2]: 55 C: devices=0xdf754560 active[3]: 45 C: devices=0xdf7544e0 echo "100:90:80:70:60" >trip_points affect following(hot,90 is ignored): critical (S5): 100 C passive: 80 C: tc1=1 tc2=2 tsp=100 devices=0xdf6cd8c0 active[0]: 70 C: devices=0xdf754680 active[1]: 60 C: devices=0xdf7545e0 active[2]: 55 C: devices=0xdf754560 active[3]: 45 C: devices=0xdf7544e0
The described machine is not made up from me. There are machines using more than two active cooling devices. As I cannot influence the last two, fan will always be activated at 45 degree Celcius. Question: Will this be fixed? If yes, about when can I anticipate with it in a kernel release? Thanks. P.S.: increased severity, to attract some attention. At least it is does not fit to the specification and has to be fixed sooner or later. (As sooner as better :) ).
Bug 2588 provide two seperate patches for this issue, please check it. Len, please mark this one as a duplicated.
*** This bug has been marked as a duplicate of 2588 ***