@Alex,
So I've scanned a bunch of machines and some have P_LVL2_LAT and
P_LVL3_LAT defined as non supporting C2/C3 and the DSDT does not contain
a _CST. Some newer CPUs such a Sandybridge are configured like this
and the Intel idle driver figures out the number of C states from the
CPU id rather than trusting the firmware provided data (be it existent
or not).
So.. perhaps I could phrase the warning something like:
"FADT P_LVL2_LAT is 101, a value > 100 indicates that the C2 state is
not defined in the FADT. C states either defined in the _CST object or
determined by the kernel from the CPU id."
** Changed in: fwts (Ubuntu)
Status: In Progress => Incomplete
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https://bugs.launchpad.net/bugs/833644
Title:
C state capability support check fails
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