http://bugzilla.kernel.org/show_bug.cgi?id=11993





------- Comment #4 from [EMAIL PROTECTED]  2008-11-09 23:52 -------
Hi yakui zhao,

I tried the boot options:

a) idle=poll indeed lets the system boot in dual core mode. Nevertheless it
seems that significant parts of the ACPI power and thermal management do not
work correctly.

b) when I use processor.max_cstate=1 the system still hangs. Nevertheless it
hangs at a different stage with a different screen output. But again it is a
very early state. If you wish I can attach also a screen shot of this hanging
state.

A comment to option a) idle=poll: As I said the system boots when I use the
option. Nevertheless when I look into /proc/acpi/processor/P001/info I see
this:

[EMAIL PROTECTED]:/proc/acpi/processor/P001$ cat info 
processor id:            0
acpi id:                 1
bus mastering control:   yes
power management:        no
throttling control:      no
limit interface:         no

Furthermode in /proc/acpi/thermal_zone/THRM I see this:

[EMAIL PROTECTED]:/proc/acpi/thermal_zone/THRM$ cat cooling_mode 
<setting not supported>
[EMAIL PROTECTED]:/proc/acpi/thermal_zone/THRM$ cat trip_points 
critical (S5):           100 C

--> it seems to me that some essential information from the systems ACPI tables
(I guess from the SSDTs) is not processed successfully.


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