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Erratic Fan Speeds with 1505/6400 and I8kfangui

post #1 of 7
10/8/06 at 3:30am
Thread Starter 
I have an Inspiron 1505/6400 notebook with both I8kfangui and Notebook Hardware Controller installed. As I live in a hot tropical climate, I set the fans to run at 'high' whenever the CPU temperature exceeds 52C. In general, this fan control works well but occassionally, the fan speed becomes erratic and starts to oscillate (i.e. it goes High for a few seconds, stops momentarily, and then goes back to High and repeats). I'm not too sure, but it seems that this happens after long periods of usage or when the CPU temperature goes above a certain value. The following are my auto control settings:

Turn on at 42, Turn off at 35, Slow
Turn on at 52, Turn off at 42, Fast
(all other temperatures: Fast)

Is this a bug in the program?

Also, does my notebook model have a second fan and is it possible to enable hardware sensore support and control the fan speeds in increments? Thanks.

Edit: By the way, I'm using I8kfangui v3.0 Beta 7. I also just noticed that switching to manual control and back to auto (when the temperature is below 52C) seems to temporarily solve the problem, until the temperature exceeds 52C again.
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post #2 of 7
10/8/06 at 5:15am
I get this problem on my 9400 too...so now I have it set to monitor temps only...not to control them...

I preferred i9kfangui when I had my 9300, but it doesnt support Core 2 Duo...
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post #3 of 7
10/9/06 at 10:23pm
mmmmmm erotic fan speeds
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post #4 of 7
10/9/06 at 10:28pm
Sometimes when I boot up..the fans stay off...even though auto temp control is enabled.
I have to "kickstart" the fans by forcing thme to max speed, then going back to auto...this seems to work...not very helpful though...
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post #5 of 7
10/9/06 at 11:39pm
since you live in a tropical climate is it bad to leave the fans on?
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post #6 of 7
10/10/06 at 11:07pm
In i8kfangui, go to options, click the display options tab, and finally set the fan setting enforcement to "10 msec." Problem solved.
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post #7 of 7
10/12/06 at 2:41am
Quote:
Originally Posted by pvcsnathan
In i8kfangui, go to options, click the display options tab, and finally set the fan setting enforcement to "10 msec." Problem solved.

As long as you don't mind the approximately 15% decrease in system performance.

This has been discussed before.
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