/proc/acpi/thermal_zone/THRM/temperature always reports 40C - is this a bug?
Hi,
Ethan, at http://bugs.gentoo.org/142635 reports that the thermal zone always reads 40C. Is this something that should be filed at the kernel bugzilla for further investigation, or can we simply blame a buggy/unfixable BIOS? I understand that i2c/hwmon is the more common way of measuring temperatures.
Thanks,
Daniel
Quoted 7 lines · Daniel Drake
Hi,
Ethan, at http://bugs.gentoo.org/142635 reports that the thermal zone always reads 40C. Is this something that should be filed at the kernel bugzilla for further investigation, or can we simply blame a buggy/unfixable BIOS? I understand that i2c/hwmon is the more common way of measuring temperatures.
Probably this isn't specific to a gentoo build and would happen just the same with a kernel.org build. So if it is a bug, it is probably an upstream bug.
However, unless it used to work, or something bad happens, this is sort of an academic failure. I suppose if you ran Windows on the box and it displayed a changing temperature via ACPI but Linux does not, then it would be more interesting.
It would be good to verify that ACPI events in general are working on the box -- eg. the power button etc -- as a failure there would also be more interesting than unchanging temperature.
-Len
Quoted 12 lines · Len Brown
Quoted 7 lines · Daniel Drake
Hi,
Ethan, at http://bugs.gentoo.org/142635 reports that the thermal zone always reads 40C. Is this something that should be filed at the kernel bugzilla for further investigation, or can we simply blame a buggy/unfixable BIOS? I understand that i2c/hwmon is the more common way of measuring temperatures.
Probably this isn't specific to a gentoo build and would happen just the same with a kernel.org build. So if it is a bug, it is probably an upstream bug.
Quoted 8 lines
However, unless it used to work, or something bad happens, this is sort of an academic failure. I suppose if you ran Windows on the box and it displayed a changing temperature via ACPI but Linux does not, then it would be more interesting.
It would be good to verify that ACPI events in general are working on the box -- eg. the power button etc -- as a failure there would also be more interesting than unchanging temperature.
I guess it may be related to http://bugzilla.kernel.org/show_bug.cgi?id=5534
Greetings,
Rafael
Signature · 2 lines
You never change things by fighting the existing reality. R. Buckminster Fuller
Quoted 7 lines · Len Brown
Quoted 3 lines · Daniel Drake
Hi,
Ethan, at http://bugs.gentoo.org/142635 reports that the thermal zone always reads 40C. Is this something that should be filed at the kernel bugzilla for further investigation, or can we simply blame a buggy/unfixable BIOS? I understand that i2c/hwmon is the more common way of measuring temperatures.
Probably this isn't specific to a gentoo build and would happen just the same with a kernel.org build. So if it is a bug, it is probably an upstream bug.
Agreed - I was asking whether you regard this as a real upstream bug, or a broken ACPI implementation not worth fixing.
Quoted 3 lines
It would be good to verify that ACPI events in general are working on the box -- eg. the power button etc -- as a failure there would also be more interesting than unchanging temperature.
The power button does generate events, so it's not completely broken.
I guess this can just be passed off as a small BIOS bug? If you'd like us to open a bug for it anyway, just say.
Thanks!
Daniel