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G4 PB fan runs continuously with extra monitor

Message #1 - Posted 2006/04/14 - Charles Adams

I have a 12" G4 Powerbook, which exhibits this problem (feature?): when attached via DVI cable to a Dell 20" LCD monitor, the PB fan runs continuously. It does this with the PB screen off, and when the lid is open or closed.

Just wondering if anyone else experiences this, or has information.

Thanks!

Message #2 - Posted 2006/04/15 - John Johnson

Previously, Charles Adams wrote:

I have a 12" G4 Powerbook, which exhibits this problem (feature?): when attached via DVI cable to a Dell 20" LCD monitor, the PB fan runs continuously. It does this with the PB screen off, and when the lid is open or closed.

Just wondering if anyone else experiences this, or has information.

Thanks!

Given that driving an external monitor makes the graphics card work harder (in combination with the internal monitor, at least), and therefore generates more heat, wouldn't you expect the fan to run? While my 15" AlBook doesn't turn on the fan (so far) when connected to an external LCD, it does get rather warmer than when only driving the internal screen. fwiw

Later,
John

johajohn@indianahoosiers.edu

'indiana' is a 'nolnn' and 'hoosier' is a 'solkk'. Indiana doesn't solkk.

Message #3 - Posted 2006/04/15 - Charles Adams

Previously, John Johnson wrote:

Previously, Charles Adams wrote:

I have a 12" G4 Powerbook, which exhibits this problem (feature?): when attached via DVI cable to a Dell 20" LCD monitor, the PB fan runs continuously. It does this with the PB screen off, and when the lid is open or closed.

Just wondering if anyone else experiences this, or has information.

Thanks!

Given that driving an external monitor makes the graphics card work harder (in combination with the internal monitor, at least), and therefore generates more heat, wouldn't you expect the fan to run? While my 15" AlBook doesn't turn on the fan (so far) when connected to an external LCD, it does get rather warmer than when only driving the internal screen. fwiw

Thanks, John. The continual sound of the fan temporarily interfered with my own logic board. As soon as I unplug the monitor, the fan stops, and the PB is cooler.

Thanks again.

C.A.

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