Hi --
I have an HP z600 workstation that has the FAN running full when idle. In fact, after the boot, the fan never slows down or varies. I looked in dmesg, and noticed this:
[ 1.516778] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS
[ 1.516781] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS
[ 1.516786] ACPI: Marking method _OSC as Serialized because of AE_ALREADY_EXISTS error
[ 1.519868] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS
[ 1.519872] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS
[ 1.624638] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS
[ 1.624642] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS
[ 1.624726] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS
[ 1.624729] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS
[ 1.624802] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS
[ 1.624805] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS
[ 1.624895] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS
[ 1.624898] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS
[ 1.624977] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS
[ 1.624981] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS
[ 1.625070] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS
[ 1.625074] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS
[ 1.625153] ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS
[ 1.625157] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node ffff8801b8c4e3e0), AE_ALREADY_EXISTS
Anyone know what could be done to fix this?