Red Hat Bugzilla – Bug 428530
macbook overheats when cpu is under heavy use
Last modified: 2009-01-09 00:46:36 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:126.96.36.199) Gecko/20071213 Fedora/188.8.131.52-3.fc8 Firefox/184.108.40.206
Description of problem:
The default maximum fan speed is set to 6200, which is not high enough to prevent the macbook from overheating when under heavy use. Loading the applesmc module and increasing the fan speed manually prevents this from happening.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Start using one or two processors at 60%+ capacity
2. Wait about 5-10 minutes
3. Notice that your macbook gets hot and reboots
Fan speed increase.
I can confirm that on a macbook 3,1 ("santa rosa", not macbook pro) running f8
x86_64 the applesmc module is not loaded by default and that the default maximum
fan speed is 6200. I will run some tests to see of I can replicate the system
(In reply to comment #0)
> From Bugzilla Helper:
> User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:220.127.116.11)
Gecko/20071213 Fedora/18.104.22.168-3.fc8 Firefox/22.214.171.124
> Description of problem:
> The default maximum fan speed is set to 6200, which is not high enough to
prevent the macbook from overheating when under heavy use. Loading the applesmc
module and increasing the fan speed manually prevents this from happening.
What kind of macbook exactly?
Pleae post the output of the 'dmidecode' command from this machine.
I think this was fixed, I don't see this on my MacBook model 4,1.
Created attachment 305034 [details]
output of dmidecode
Hello, sorry for the lack of timely response. Here is the requested
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