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1 Posts

10-12-2020

Netherlands

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P1 Gen 3, minimal Fan Speed on AC power, Win 10

2020-10-12, 20:01 PM

Hey

 

I recently got a P1 Gen 3, so far the only annoyance I have is that on AC power the fan (seemingly left side only), keeps -slightly- spinning even with no load at all. Its not loud by any means, but I find it rather distracting when not doing any work on my laptop. Unplugging the device from AC power drops the fan speed to completely off.

 

However, while the fan is spinning on AC every metric and program seems to report the fan is at 0 RPM and I cant seem to get it to stop. On previous laptops I've seen BIOS settings such as ' Keep fan ON while using AC', but that also doesnt seem to be available (BIOS 1.06). 

 

On linux I am also able to fully turn off the fans on AC power using basic fan control, but this doesnt seem to be the case for Windows 10.

 

Anyone knows how to fix this? Or if it is unfixable and I will have to deal with it.

 

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9 Posts

10-09-2020

Switzerland

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Re:P1 Gen 3, minimal Fan Speed on AC power, Win 10

2020-10-13, 8:01 AM

Similar observation here. Although both fans are running constantly. Very annoying, especially the collection of dust.
I also noticed that even with all power management settings (in Windows and Bios) being equal for battery and plugged in,
the CPU frequency (not the usage) is always slightly lower when power by the battery only.
But limiting it to 50 % for plugged in does not change the fan activity.

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9 Posts

10-09-2020

Switzerland

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Re:P1 Gen 3, minimal Fan Speed on AC power, Win 10

2020-10-20, 19:57 PM

Could this be related to the NVIDIA card? I noticed that the performance of apps that use gpu computing is significantly reduced on battery compared to plugged in. (In both cases the Win10 energy and Lenovos "intelligent cooling" settings are the same, at least as far as the user can control them.)

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15 Posts

02-19-2015

Switzerland

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Re:P1 Gen 3, minimal Fan Speed on AC power, Win 10

2020-11-01, 21:21 PM
Salü, I also have a P1, Gen3, i9 have the some problems but feels even worse on my side. It's hot all the time even with almost no CPU or GPU use. If I have Chrome open and some tabs it just hot...ridiculous hot. Do you have similar issues are is yours kind of "cool"? Thanks for your reply. Cheers
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9 Posts

10-09-2020

Switzerland

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Re:P1 Gen 3, minimal Fan Speed on AC power, Win 10

2020-11-03, 21:32 PM

Mine is cool. Still, the constant fan on AC is annoying.
 

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2 Posts

01-01-2021

China

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Re:P1 Gen 3, minimal Fan Speed on AC power, Win 10

2021-01-02, 11:58 AM

Totally the same here, I just opened a pdf then the fan starts to work at maximum speed, and CPU usage is only 17%.

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1 Posts

01-06-2021

Italy

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Re:P1 Gen 3, minimal Fan Speed on AC power, Win 10

2021-01-06, 14:49 PM

Salve,

Anche io possiedo un P1 gen 3 e putroppo la ventola spesso entra in funzione anche solo con chrome aperto. Qualcuno ha qualche soluzione a tale problema?

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9 Posts

12-14-2020

United States of America

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Re:P1 Gen 3, minimal Fan Speed on AC power, Win 10

2021-01-07, 5:51 AM

There are three "power mode" settings. The "best battery life" setting minimizes the noise from the fan.

 

The P1 is very noisy on the "best performance" setting. 

 

Google Translate:

 

Sono disponibili tre impostazioni di "modalità di alimentazione". L'impostazione "migliore durata della batteria" riduce al minimo il rumore della ventola.

 

Il P1 è molto rumoroso nell'impostazione "prestazioni migliori".

 

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66 Posts

08-25-2017

Norway

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Re:P1 Gen 3, minimal Fan Speed on AC power, Win 10

2021-01-07, 20:10 PM

I have the same issue. On Linux there doesnt seem to be a way around it for now without third party utilities.

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9 Posts

12-14-2020

United States of America

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  • Message 10 of 12

Re:P1 Gen 3, minimal Fan Speed on AC power, Win 10

2021-01-08, 21:36 PM

I returned my P1 Gen 3 yesterday. I liked the Xeon processor, but the fan noise and heat were too much. They haven't figured out how to cool a 45 W processor in such a thin package.

 

Even if you don't about noise, the heat might still be an issue. In the tests I was doing, 90% CPU meant the processor was at 90 °C. (Room air was about 20 °C.) The NVIDIA graphics seemed to glitch out at least once, not sure it was the heat or some other issue.

 

Just as I was about to put the P1 back in its box, I noticed one final thing. There's a row of vents along the back edge, blowing hot air. The vents run all the way across, between the hinges. They're mostly blocked by the lid, so the hot air mostly goes up with the lid open, and mostly out the back with the lid closed. This does not seem like a very good strategy for keeping things cool.

 

See also this thread: ThinkPad P15 and P17 temperature

 

That thread shows the heat pipe design of the P15, which may be problematic. It also shows what the CPU cooler looks like for a P1, although that doesn't include where the hot air goes when everything is assembled.

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