kernel_task always using above 100% CPU!

[MattMcHackit83]

Problem appears to have become sporadic... sometimes it happens, sometimes it doesn't. Still presenting with the same repeated message in Console that only begins to appear once the kernel_task/CPU issue starts:

clamshellStateChanged | Clamshell state changed: closed=0, shouldSleepWhenClosed=2

 

[RehabMan]

Problem appears to have become sporadic... sometimes it happens, sometimes it doesn't. Still presenting with the same repeated message in Console that only begins to appear once the kernel_task/CPU issue starts:

clamshellStateChanged | Clamshell state changed: closed=0, shouldSleepWhenClosed=2

Look for and debug any Notify calls for _LID.

 

[MattMcHackit83]

Look for and debug any Notify calls for _LID.

Thanks. Can you please tell me where I should look for the notify calls? In the Console or one of the logs?

 

[RehabMan]

Thanks. Can you please tell me where I should look for the notify calls? In the Console or one of the logs?

Review DSDT.aml code.

 

[MattMcHackit83]

Review DSDT.aml code.

The only references to _LID are in the LID0 method in my DSDT:

        Device (LID0)
        {
            Name (_HID, EisaId ("PNP0C0D"))  // _HID: Hardware ID
            Name (LIDF, Zero)
            Name (WMIF, Zero)
            Method (_LID, 0, NotSerialized)  // _LID: Lid Status
            {
                If (WMIF)
                {
                    Store (Zero, WMIF)
                    Return (Zero)
                }
                ElseIf (^^PCI0.LPCB.EC.ECOK)
                {
                    Return (^^PCI0.LPCB.EC.LSTE)
                }
                Else
                {
                    Return (One)
                }
            }

            Method (_PRW, 0, NotSerialized)  // _PRW: Power Resources for Wake
            {
                Return (PKG2 (GGPE (0x02020013), 0x03))
            }

            Method (_PSW, 1, NotSerialized)  // _PSW: Power State Wake
            {
                If (^^PCI0.LPCB.EC.ECOK)
                {
                    Store (Arg0, ^^PCI0.LPCB.EC.LWKE)
                }
            }
        }

Does this look okay?

 

[RehabMan]

The only references to _LID are in the LID0 method in my DSDT:

        Device (LID0)
        {
            Name (_HID, EisaId ("PNP0C0D"))  // _HID: Hardware ID
            Name (LIDF, Zero)
            Name (WMIF, Zero)
            Method (_LID, 0, NotSerialized)  // _LID: Lid Status
            {
                If (WMIF)
                {
                    Store (Zero, WMIF)
                    Return (Zero)
                }
                ElseIf (^^PCI0.LPCB.EC.ECOK)
                {
                    Return (^^PCI0.LPCB.EC.LSTE)
                }
                Else
                {
                    Return (One)
                }
            }

            Method (_PRW, 0, NotSerialized)  // _PRW: Power Resources for Wake
            {
                Return (PKG2 (GGPE (0x02020013), 0x03))
            }

            Method (_PSW, 1, NotSerialized)  // _PSW: Power State Wake
            {
                If (^^PCI0.LPCB.EC.ECOK)
                {
                    Store (Arg0, ^^PCI0.LPCB.EC.LWKE)
                }
            }
        }

Does this look okay?

Must review all code looking at WMIF, LSTE, etc.

 

[vengeancevendor]

Something that fixed it for me... I know, the post is a year old, but maybe others are looking for a solution and here's what worked for me.
Disable / make sure it is disabled the integrated video. If you have a cpu with video, all the more the mobo has video ports, disable it case you have a discrete gpu.
Otherwise take out everything in the usb and reboot. see what happens.