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: 24+ 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 19:10 ` Mark Lord
2006-08-11 19:18 ` Andrew Morton
-- 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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=44DCCB96.5080801@rtr.ca \
--to=lkml@rtr.ca \
--cc=akpm@osdl.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox