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dashnu
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PostPosted: Thu Oct 27, 2005 5:41 pm    Post subject: My G4 seems to be overheating. Reply with quote

I have a powerbook G4 That just dies on me now and then. It is not a hardware problem because this does not happen in OSX.

As I sit here blowing on it trying to keep it cool enough to hopefully get a response from someone, I ask this question:

Why?

I have the fan module loaded ( therm_adt746x )

running gentoo-sources 2.6.13-r5

I never hear my fans go on.. and my laptop gets very hot.

I have cvs e17 for a desktop now could this be crashing my system?

I am running ~ppc this could have something to do with it also.

Any modules I may be missing? Any ideas for me to try?
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emes
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PostPosted: Thu Oct 27, 2005 6:01 pm    Post subject: Reply with quote

That should be working, check in dmesg for any errors. My powerbook actually runs cooler on linux than on OS X, as the fan is a lot more sensative. If you can't get it working, I would suggest enabling cpu frequency scaling and clock down the processor to reduce the risk of any damage.
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JoseJX
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PostPosted: Thu Oct 27, 2005 6:03 pm    Post subject: Reply with quote

What kind of Powerbook G4?
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dashnu
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PostPosted: Thu Oct 27, 2005 6:05 pm    Post subject: Reply with quote

This is the only thing related in my dmesg

Code:
adt746x: Setting speed to 0 for CPU BOTTOMSIDE fan.
adt746x: Setting speed to 0 for PWR SUPPLY BOTTOMSIDE fan.
adt746x: setting fans speed to 91 (limit exceeded by 2 on CPU BOTTOMSIDE)
adt746x: Setting speed to 91 for CPU BOTTOMSIDE fan.
adt746x: Setting speed to 91 for PWR SUPPLY BOTTOMSIDE fan.
adt746x: setting fans speed to 64 (limit exceeded by 0 on CPU BOTTOMSIDE)
adt746x: Setting speed to 64 for CPU BOTTOMSIDE fan.
adt746x: Setting speed to 64 for PWR SUPPLY BOTTOMSIDE fan.
adt746x: Stopping fans.
adt746x: Setting speed to 0 for CPU BOTTOMSIDE fan.
adt746x: Setting speed to 0 for PWR SUPPLY BOTTOMSIDE fan.
adt746x: setting fans speed to 91 (limit exceeded by 2 on CPU BOTTOMSIDE)
adt746x: Setting speed to 91 for CPU BOTTOMSIDE fan.
adt746x: Setting speed to 91 for PWR SUPPLY BOTTOMSIDE fan.


I assume this is normal output..
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dashnu
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PostPosted: Thu Oct 27, 2005 6:07 pm    Post subject: Reply with quote

PowerBook G4 15 inch 1.25 proc aluminum
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e-ipi
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PostPosted: Fri Oct 28, 2005 4:44 am    Post subject: Reply with quote

I have the same behaviour with my powerbook 12" 1.5GHz. The fans run often under Linux, unless I load the therm_adt746x module. The machine then gets alarmingly hot. It even seems to exceed the limits I see in /sys. The machine seems to do better without it, so I avoid therm_adt746x now.
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dashnu
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PostPosted: Fri Oct 28, 2005 2:28 pm    Post subject: Reply with quote

I will give that a try. Thanks. I hope this works pretty tough trying to get anything done clicking save every 5 seconds waiting for the worst.

However I remember having this problem before and that module seemed to fix it not sure what has changed. I am going to roll back to the original kernel I installed with and see if that helps also.
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dashnu
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PostPosted: Fri Oct 28, 2005 11:19 pm    Post subject: Reply with quote

after some poking around therm_adt746x is broke (broke as in my fans never turn on) in the following kernels for me..

linux-2.6.13-gentoo-r4 linux-2.6.14-gentoo
linux-2.6.13-gentoo-r3 linux-2.6.13-gentoo-r5

but it does work in 2.6.13-r2

these are gentoo-sources
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