https://bugzilla.kernel.org/show_bug.cgi?id=33742
Thomas Renninger <tr...@suse.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P1 |P5
Severity|normal |low
--- Comment #12 from Thomas Renninger <tr...@suse.de> 2011-04-28 08:57:58 ---
Argh, the _PPC function is in a dynamically loaded SSDT which the older
acpidump does not dump. Can you either compile and run the latest acpidump:
ftp://kernel.org/pub/linux/kernel/people/lenb/acpi/utils/pmtools/acpidump
or
copy away and attach the exported tables from here, please:
/sys/firmware/acpi/tables/dynamic/*
Do you use the original power adapter/battery?
There were several reports already where this happens when:
- some ThinkPads if running on AC with battery unplugged (confirmed by Lenovo
that this is intended).
- 60W instead of 90W AC adapter
and similar...
I'll leave for holidays for 3 weeks. You can workaround the issue with:
processor.ignore_ppc=1
boot parameter. If I have some time again, I can have another look why the BIOS
is requesting the limit, ping in 4 weeks or so if things get stuck.
I reduce prio of this. Such _PPC/frequency limit issues mostly boil down to be
a BIOS issue and the kernel typically behaves correctly.
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