From: David Woodfall <dave@dawoodfall.net>
To: linux-kernel@vger.kernel.org
Subject: Problem with cpufreq and i5 since post 3.9.0
Date: Fri, 27 Dec 2013 18:59:25 +0000 [thread overview]
Message-ID: <20131227185924.GH17115@Blackswan> (raw)
I recently upgraded from 3.9.0 to 3.10.17 and found that I don't have
the same cpufreq governors available. I also tested with 3.12.6 and
3.13.0_rc5 with the same results.
3.9.0 tells me:
cat /sys/devices/system/cpu/*/cpufreq/scaling_available_governors
conservative ondemand powersave userspace performance
conservative ondemand powersave userspace performance
conservative ondemand powersave userspace performance
conservative ondemand powersave userspace performance
But any of the newer kernel versions I've tested only give me
performance and powersave.
I have selected userspace as default governor and all other governors
as built-in on all versions.
I need to either be able to use performance or use userspace and set
for the max frequency. This is for an old application that tries to
detect cpu speed, but fails because it is from the days before
scaling.
Can anyone tell me what I need to do with these newer kernels?
Regards
-Dave
next reply other threads:[~2013-12-27 19:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-27 18:59 David Woodfall [this message]
2013-12-27 19:44 ` Problem with cpufreq and i5 since post 3.9.0 Heinz Diehl
2013-12-27 19:53 ` David Woodfall
2013-12-28 0:09 ` David Woodfall
2013-12-28 0:50 ` Rafael J. Wysocki
2013-12-28 1:23 ` David Woodfall
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