Comments on: Ubuntu 9.10 Karmic Koala: Temperature above threshold, cpu clock throttled

By: Ubuntu 9.10 Installation Notes

Ubuntu 9.10 Installation Notes — Thu, 29 Dec 2011 13:54:05 +0000

[...] If you see ‘CPU0: Temperature above threshold, cpu clock throttled' repeated many many times on the screen, assume the CPU isn’t actually going into meltdown and install the ‘rcconfig’ tool and use it to turn off On Demand cpu throttling. This post links to more useful information. [...]

By: kk

kk — Sun, 18 Apr 2010 17:08:31 +0000

KINDLY NOTE THERE ARE NOT ONE BUT THREE FILES AFFECTED BY THIS BUG

Which are found in /var/log

1 . kern.log (already mentioned at top )(on my system it was 346.6 MB )

2. sys.log( its contents are exact replica of kern.log also 346.6 MB)

3 . messages( it is not a .log file but yet reported as 145.6 MB )

And remember all these are after only 12 hrs of uptime ,and i am on a old intel 845gl P4 760 MB Ram setup, the cpu was always 100% ,and in a few previous days life was hell, system would hang up anytime , and i was clueless despite numerous tries . I was sure it was not a fan issue as i have cleaned the cpu fan recently

By: coolfan

coolfan — Fri, 02 Apr 2010 23:02:47 +0000

Just an FYI for others who might get such errors:
Note that one logical possibility is that the CPU is actually getting heated up beyond what it should – it could be malfunction in the CPU fan, heatsink, CPU sensors, or of course some problem with numeric settings of temperature/throttling.
So once in a while it is good to look inside the box to see if there is any lose parts, broken parts, problem with the CPU fan, too much dust, CPU cooling paste ha dried up or some such issue.

By: Nick

Nick — Thu, 26 Nov 2009 08:39:50 +0000

@leo Thanks for that - it's a much cleaner solution!

By: leo

leo — Thu, 26 Nov 2009 07:29:22 +0000

hi,i get a new solution from https://bugs.launchpad.net/ubuntu/karmic/+source/rsyslog/+bug/453444, you can try it:

I wrote a file /etc/rsyslog.d/10-temperature.conf with the following content:

:msg,contains,”Temperature/speed normal” ~
:msg,contains,”Temperature above threshold” ~

All messages containing “Temperature/speed normal” and “Temperature above threshold” are discarded.
I restarted rsyslog and it looks like the problem is solved.

I hope this will help until the problem will be fixed in the kernel.

By: Nick

Nick — Mon, 16 Nov 2009 08:57:21 +0000

@perspectoff You're quite right, sorry, I forgot to mention that. You should be able to tell if it worked because once you restart the daemon you should see in the kern.log file this: kernel: Kernel logging (proc) stopped. I'll give turning off frequency scaling a try - thanks for that!

By: perspectoff

perspectoff — Sun, 15 Nov 2009 04:12:17 +0000

You have to comment out the lines for syslog, too. The rsyslog daemon logs to both…

You ought to turn off ONDEMAND CPU frequency scaling (throttling) with rcconf, too.