Can not get fan speed and errors about failed to evaluate OSDD method

[nov30th]

Hi,

I have a problem that installed the macos in Lenovo Yoga13, can not get the fan speed.

default 14:05:58.384979 +0800 kernel [\_SB_.PCI0.LPCB.H_EC.CFSP]
default 14:05:58.384982 +0800 kernel Namespace lookup failure, AE_NOT_FOUND
default 14:05:58.384994 +0800 kernel [\_SB_.PTID.OSDD] (Node ffffff8015b46550)
default 14:05:58.385010 +0800 kernel PTIDSensors: [Warning] failed to evaluate OSDD method

from dmesg:
ACPI Error: ACPI Error: [\134_SB_.PCI0.LPCB.H_EC.CFSP][\134_SB_.PCI0.LPCB.H_EC.CFSP] Namespace lookup failure, AE_NOT_FOUND Namespace lookup failure, AE_NOT_FOUND (20140828/psargs-1d1)
(20140828/psargs-1d1)
ACPI Error: ACPI Error: Method parse/execution failed Method parse/execution failed [\134_SB_.PTID.OSDD] (Node ffffff8015802310)[\134_SB_.PTID.OSDD] (Node ffffff8015802310), AE_NOT_FOUND, AE_NOT_FOUND (20140828/psparse-270)
(20140828/psparse-270)
PTIDSensors: [Warning] failed to evaluate OSDD method

How could I do to solve this problem?

 

[RehabMan]

Hi,

I have a problem that installed the macos in Lenovo Yoga13, can not get the fan speed.

default 14:05:58.384979 +0800 kernel [\_SB_.PCI0.LPCB.H_EC.CFSP]
default 14:05:58.384982 +0800 kernel Namespace lookup failure, AE_NOT_FOUND
default 14:05:58.384994 +0800 kernel [\_SB_.PTID.OSDD] (Node ffffff8015b46550)
default 14:05:58.385010 +0800 kernel PTIDSensors: [Warning] failed to evaluate OSDD method

from dmesg:
ACPI Error: ACPI Error: [\134_SB_.PCI0.LPCB.H_EC.CFSP][\134_SB_.PCI0.LPCB.H_EC.CFSP] Namespace lookup failure, AE_NOT_FOUND Namespace lookup failure, AE_NOT_FOUND (20140828/psargs-1d1)
(20140828/psargs-1d1)
ACPI Error: ACPI Error: Method parse/execution failed Method parse/execution failed [\134_SB_.PTID.OSDD] (Node ffffff8015802310)[\134_SB_.PTID.OSDD] (Node ffffff8015802310), AE_NOT_FOUND, AE_NOT_FOUND (20140828/psparse-270)
(20140828/psparse-270)
PTIDSensors: [Warning] failed to evaluate OSDD method

How could I do to solve this problem?

PTID SSDT (where OSDD is) almost never works.
Correctly implementing fan speed requires reverse engineering of the EC fields and custom code written for FakeSMC_ACPISensors.kext.
See ProBook examples for ideas.

 

[nov30th]

PTID SSDT (where OSDD is) almost never works.
Correctly implementing fan speed requires reverse engineering of the EC fields and custom code written for FakeSMC_ACPISensors.kext.
See ProBook examples for ideas.

Thanks RehabMan, I will just leave it there as I am not familiar with the ACPI and EC.