Had a look at kern.log after reading earlier post found:
Nov 22 22:20:01 sibs-laptop kernel: [ 2.176614] Marking TSC unstable due to
TSC halts in idle
Nov 22 22:20:01 sibs-laptop kernel: [ 2.176637] ACPI: CPU0 (power states:
C1[C1] C2[C2] C3[C3])
Nov 22 22:20:01 sibs-laptop kernel: [ 2.176673] processor LNXCPU:00:
registered as cooling_device0
Nov 22 22:20:01 sibs-laptop kernel: [ 2.176678] ACPI: Processor [CPU0]
(supports 8 throttling states)
Nov 22 22:20:01 sibs-laptop kernel: [ 2.177133] ACPI: SSDT 7f7b8300 000C8
(v01 PmRef Cpu1Ist 00003000 INTL 20051117)
Nov 22 22:20:01 sibs-laptop kernel: [ 2.177774] ACPI: SSDT 7f7b8620 00085
(v01 PmRef Cpu1Cst 00003000 INTL 20051117)
Nov 22 22:20:01 sibs-laptop kernel: [ 2.179187] ACPI: CPU1 (power states:
C1[C1] C2[C2] C3[C3])
Nov 22 22:20:01 sibs-laptop kernel: [ 2.179218] processor LNXCPU:01:
registered as cooling_device1
Nov 22 22:20:01 sibs-laptop kernel: [ 2.179223] ACPI: Processor [CPU1]
(supports 8 throttling states)
Nov 22 22:20:01 sibs-laptop kernel: [ 2.185768] ACPI Warning:
\_TZ_.THRM._PSL: Return Package type mismatch at index 0 - found Processor,
expected Reference 20090521 nspredef-946
Nov 22 22:20:01 sibs-laptop kernel: [ 2.185779] ACPI: Expecting a
[Reference] package element, found type C
Nov 22 22:20:01 sibs-laptop kernel: [ 2.185782] ACPI: Invalid passive
threshold
Nov 22 22:20:01 sibs-laptop kernel: [ 2.187887] thermal LNXTHERM:01:
registered as thermal_zone0
Nov 22 22:20:01 sibs-laptop kernel: [ 2.187899] ACPI: Thermal Zone [THRM]
(91 C)
Nov 22 22:20:01 sibs-laptop kernel: [ 2.187975] isapnp: Scanning for PnP
cards...
======================
Nov 22 22:25:12 sibs-laptop kernel: [ 329.573161] CPU1: Temperature above
threshold, cpu clock throttled (total events = 196)
Nov 22 22:25:12 sibs-laptop kernel: [ 329.574131] CPU1: Temperature/speed
normal
Nov 22 22:27:02 sibs-laptop kernel: [ 439.606851] Critical temperature reached
(127 C), shutting down.
Nov 22 22:27:02 sibs-laptop kernel: Kernel logging (proc) stopped.
--
regression in karmic thermal control
https://bugs.launchpad.net/bugs/432670
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