From: Mark Lord <lkml@rtr.ca>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@osdl.org>
Subject: cpufreq stops working after a while
Date: Fri, 11 Aug 2006 14:25:26 -0400 [thread overview]
Message-ID: <44DCCB96.5080801@rtr.ca> (raw)
One of my notebooks (Dell Latitude X1) has a 1.1GHz Pentium-M ULV processor.
This chip can change CPU speeds from 600 -> 800 -> 1100 Mhz.
I use speedstep-centrino with it, and after boot all is usually okay.
But after a few hours of operation, it stops shifting to the highest frequency
even under continuous 100% load (or not). Eventually it gets stuck at 600Mhz
and stays there until I reboot.
Sometimes rebooting doesn't even restore it.
/sys/devices/system/cpu/cpu0/cpufreq is all very normal looking,
showing the available frequencies and other info. All of the attribs
there look fine, except for "scaling_max_freq", which is what seems
to gradually get set smaller. For instance, right now it is set to 800000,
and it won't let me change it (echo 11000000 > scaling_max_freq has no effect.
WHY? And how can I fix it?
next reply other threads:[~2006-08-11 18:25 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-11 18:25 Mark Lord [this message]
2006-08-11 18:39 ` cpufreq stops working after a while Dave Jones
2006-08-11 19:41 ` Mark Lord
2006-08-11 20:01 ` Mark Lord
2006-08-11 20:12 ` Dave Jones
2006-08-11 18:46 ` Andrew Morton
2006-08-11 19:01 ` Mark Lord
2006-08-11 19:01 ` Mark Lord
2006-08-11 19:10 ` Mark Lord
2006-08-11 19:18 ` Andrew Morton
2006-08-12 8:52 ` Erik Slagter
2006-08-15 7:49 ` Thomas Renninger
2006-08-15 11:07 ` Carlos Garcia Campos
-- strict thread matches above, loose matches on Subject: below --
2006-08-11 19:55 Pallipadi, Venkatesh
2006-08-11 20:29 ` Mark Lord
2006-08-11 20:39 ` Mark Lord
2006-08-11 21:01 ` Dave Jones
2006-08-11 21:09 ` Mark Lord
2006-08-11 21:15 ` Mark Lord
2006-08-11 21:17 ` Mark Lord
2006-08-11 21:25 ` Mark Lord
2006-08-18 15:11 ` Pavel Machek
2006-08-24 14:44 ` Mark Lord
2006-08-24 16:15 ` Matthew Garrett
2006-08-11 21:08 Pallipadi, Venkatesh
2006-08-11 21:38 Pallipadi, Venkatesh
2006-08-11 21:53 ` Mark Lord
2006-08-11 22:18 Pallipadi, Venkatesh
2006-08-15 13:27 Pallipadi, Venkatesh
2006-08-15 15:07 ` Carlos Garcia Campos
2006-08-16 19:28 ` Len Brown
2006-08-15 15:23 Pallipadi, Venkatesh
2006-08-15 17:46 ` Carlos Garcia Campos
2006-08-16 10:10 ` Carlos Garcia Campos
2006-08-16 13:27 Pallipadi, Venkatesh
2006-08-16 18:19 ` Carlos Garcia Campos
2006-08-17 10:46 ` Thomas Renninger
2006-08-17 10:58 ` Carlos Garcia Campos
2006-08-17 15:28 ` Thomas Renninger
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