http://bugzilla.kernel.org/show_bug.cgi?id=9485
------- Comment #27 from [EMAIL PROTECTED] 2008-10-03 05:46 -------
Hi, Nico
Thanks for caring this problem. This issue is related with broken BIOS that
the system can't work if acpi.power_nocheck is not added. In current kernel
when the device is turned on/off, the ACPI driver will try to check the state
again to confirm whether the device is turned on/off. If the ACPI object can't
return the correct device power state, it indicates that OS fails in device
power transistion. But on windows there is no such strick check so the box can
work well.
From the dmesg in comment #25 it seems that the ACPI object can't return
the correct device power state if acpi.power_nocheck is not added.
Thanks.
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