https://bugzilla.kernel.org/show_bug.cgi?id=16105





--- Comment #14 from Len Brown <l...@kernel.org>  2010-11-27 20:37:40 ---
As CONFIG_NO_HZ=n + CONFIG_INTEL_IDLE=y + nolapic_timer works,
and CONFIG_NO_HZ=y + CONFIG_INTEL_IDLE=y works,
it seems that the failure may be specific
to LAPIC timer one-shot mode.

> > ...  show the same output for acpi_idle.

> In this case I don't have a cpuidle folder inside cpuX but only the cpuidle
> folder reported above in #8

This means that you have no C-states when running in ACPI mode.
Please double check that they are not disabled in BIOS SETUP,
please double check what the default BIOS setting for this is.
If you can enable them, give that a go and see if we can get
the grep . /sys/devices/system/cpu/cpu0/cpuidle/*/*
for acpi_idle.

please attach the output from acpidump
---
please boot the failing config with
intel_idle.max_cstate=1
and then reboot, increasing the '1'
and report the lowest number where the failure comes back.

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