Am 22.01.2011 23:52, schrieb Christian Lamparter: > On Saturday 22 January 2011 21:38:47 Richard Schütz wrote: >> I noticed that from kernel 2.6.37 on (i've tested 2.6.38-rc2, too) ath9k >> prevents my CPU (Intel Atom N450) from entering the C4 power state. It >> only goes down to C2 (there's no C3) instead. In 2.6.36(.3) everything >> is still fine. The CPU will only go down to C4 with 2.6.37 when the >> wireless interface is brought down. > > "ath9k: Fix a DMA latency issue for Intel Pinetrail platforms." > http://www.spinics.net/lists/linux-wireless/msg58264.html I experience the same problem, and I do not have a Pinetrail. I run Intel Core i5-520M (Arrandale) with an AR9280 Rev 2.
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