Temperature in Notebook Compaq V2415LA
loic.corbasson at gmail.com
Mon Mar 20 13:47:43 UTC 2006
Am Montag 20 März 2006 06:56 schrieb Juan Pablo Herrera:
> Hi All!
> I installed a Ubuntu Breezy in a notebook Compaq V2415LA. Before
> making the first upgrade, everything worked OK.
> After with the 2.6.12-10 kernel version, my notebook is turned off
> after the some minutes.
> How can I solve it?
I had the same problem for a while, because of a too high temperature (95°C in
the logs!) in the CPU. My problem was not Ubuntu-related, I think there is a
cooling problem somewhere in my PC: using e.g. Windows or a DOS diskette
doesn't change anything.
The only solution I found was to turn CPUfreq on (the cpu frequency scaling
feature in the kernel) to limit the processing power of my laptop (1,33GHz in
place of 1,8GHz).
According to bids at MercadoLibre your laptop has an AMD Semprom 3000+, so the
following commands should work (open a terminal):
$ sudo modprobe powernow-k8 cpufreq_userspace freq_table
(...type your password)
You should see such an output:
affected_cpus scaling_available_frequencies scaling_governor
cpuinfo_cur_freq scaling_available_governors scaling_max_freq
cpuinfo_max_freq scaling_cur_freq scaling_min_freq
cpuinfo_min_freq scaling_driver scaling_setspeed
Now, change the frequency by using these commands:
$ sudo sh
# echo $(cat scaling_min_freq) > scaling_max_freq
Your processor should now run with the smallest speed available. See if your
computer still turns off, else you can gradually increase the frequency by
replacing $(cat scaling_min_freq) in the previous lines by the numbers output
by the following command:
$ cat scaling_available_frequencies
PS: Another solution (if you're not afraid of the noise!) is to use a vacuum
cleaner to enhance the cooling: put the hole near a big cooling hole of your
PC and enjoy :) (really useful when using an outdated OS like Windows XP, or
when installing Ubuntu via an unmodified CD, where afaik you don't have the
cpufreq features available).
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