Hi! On my new system with Gigabyte G41M-ES2H mobo and Intel Core Quad Q8300 CPU, there are the following errors reported on boot: ACPI: SSDT 00000000cdcedb10 0022A (v01 PmRef Cpu0Ist 00003000 INTL 20040311) Marking TSC unstable due to TSC halts in idle Switching to clocksource hpet processor LNXCPU:00: registered as cooling_device0 ACPI: SSDT 00000000cdcedfd0 00152 (v01 PmRef Cpu1Ist 00003000 INTL 20040311) ACPI Error (psparse-0537): Method parse/execution failed [\_PR_.CPU1._PDC] (Node ffff88012f815a00), AE_ALREADY_EXISTS ACPI: Marking method _PDC as Serialized because of AE_ALREADY_EXISTS error processor LNXCPU:01: registered as cooling_device1 ACPI: SSDT 00000000cdcee130 00152 (v01 PmRef Cpu2Ist 00003000 INTL 20040311) ACPI Error (psparse-0537): Method parse/execution failed [\_PR_.CPU2._PDC] (Node ffff88012f815a80), AE_ALREADY_EXISTS ACPI: Marking method _PDC as Serialized because of AE_ALREADY_EXISTS error processor LNXCPU:02: registered as cooling_device2 ACPI: SSDT 00000000cdcee290 00152 (v01 PmRef Cpu3Ist 00003000 INTL 20040311) ACPI Error (psparse-0537): Method parse/execution failed [\_PR_.CPU3._PDC] (Node ffff88012f815b00), AE_ALREADY_EXISTS ACPI: Marking method _PDC as Serialized because of AE_ALREADY_EXISTS error processor LNXCPU:03: registered as cooling_device3 Is this error just cosmetic, or is it worth fixing ? There is no BIOS update for this motherboard yet. Are the SSDT tables replaceable the same way as DSDT is ? With regards, Pavel -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html