From: Michael Karcher <Michael.Karcher@fu-berlin.de>
To: linux-pm@vger.kernel.org
Subject: power management regression in linux 3.10?
Date: Mon, 03 Jun 2013 19:56:15 +0200 [thread overview]
Message-ID: <1370282175.18020.4.camel@localhost> (raw)
Hello,
I am using an IBM ThinkPad T60 (i915, Core 2 Duo T7200) and recently
upgraded from a custom 3.7 kernel to a custom 3.10-rc4 kernel
(v3.10-rc4-1-gc026d8e).
After upgrading, I get around 17-20W power usage instead of 12-15W power
usage as I had with 3.7. powertop show that CPU0 is in state POLL all of
the idle time, while CPU1 correctly enters C3.
As this may be caused by my kernel configuration, I pastebinned
my .config to http://pastebin.ca/2388457. Note that I am using
CONFIG_NO_HZ_FULL, which might be nonstandard and actually not sensible
for a standard single-user laptop system with GUI.
Do you want me to try something to debug the problem?
Regards,
Michael Karcher
next reply other threads:[~2013-06-03 18:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-03 17:56 Michael Karcher [this message]
2013-06-03 19:34 ` power management regression in linux 3.10? Rafael J. Wysocki
2013-06-03 19:37 ` Dirk Brandewie
2013-06-03 20:04 ` Rafael J. Wysocki
2013-06-04 14:19 ` Frederic Weisbecker
2013-06-04 1:08 ` Michael Karcher
2013-06-04 11:30 ` power management regression in linux 3.10? (related to CONFIG_NO_HZ_FULL) Rafael J. Wysocki
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