From: "Richard Schütz" <r.schtz@t-online.de>
To: linux-wireless@vger.kernel.org
Subject: ath9k prevents CPU from entering C4 state (kernel 2.6.37 regression)
Date: Sat, 22 Jan 2011 21:38:47 +0100 [thread overview]
Message-ID: <4D3B4057.5000206@t-online.de> (raw)
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.
used wireless device:
05:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless
Network Adapter (PCI-Express) (rev 01)
--
Regards,
Richard Schütz
next reply other threads:[~2011-01-22 21:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-22 20:38 Richard Schütz [this message]
2011-01-22 22:52 ` ath9k prevents CPU from entering C4 state (kernel 2.6.37 regression) Christian Lamparter
2011-01-22 23:49 ` Thomas Bächler
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