【求助】ZBook 15 G3的风扇满速转

felix1970

Zbook 15 G3, i7的六代处理器，开机进入WIN8.1 桌面后风扇就转起来了。自以为win8.1是很安静的系统了，没想到风扇能狂转半天，之前这个系统在这台机器上一直都好好的，但在想是不是装多了软件或少了驱动。但通过驱动软件检测是没问题的。



只好拆壳检查，看到风扇几乎都无灰。干脆直接换了块备用的2.5寸SSD系统盘，从0开始安装WIN10 LTSC 1909版，装完后风扇也还是转。


于是只开机，启动进入U盘的WinPE界面，居然风扇还在转。


因此就在想，是不是硅脂不够了，或者CPU温度高，所以风扇就被带起来了。


于是简单搜索了一下网络资源，装了个SpeedFan检测，Temp2和Temp5的温度分别达到了127°和85°. 但看不懂这俩是啥意思。请教达人。

lhh852465021

路过看看

Mashcar

Download HW Monitor and look temperature there. I have same problem in HP 8570W.
Your I2C ACPI sensor from motherboard don't communicate with GPU.
Diode sensors in CPU and GPU are ok. To repair simply change GPU MXM card or try to flash vbios.
GTX 980M in my notebook fan is working OK, i change to Quadro P5200, fan after 10-15s full speed nonstop. Change to AMD M4000, fan working OK.
Or download notebookfancontrol and set HP 8760W fan profile.

felix1970

QUOTE:

Mashcar 发表于 2022-12-17 15:05
Download HW Monitor and look temperature there. I have same problem in HP 8570W.
Your I2C ACPI sens ...

Thanks a lot for your kind sharing.

gong2512

是不是bios的风扇自动模式没开启

Mashcar12

QUOTE:

gong2512 发表于 2022-12-19 13:11
是不是bios的风扇自动模式没开启

In bios there is option "Fan always on when AC plugged in" but it only makes fan run always on silent first gear. There are 4-5 gear speeds for fan. When that option is turned off, then under 40 degrees fan is silent.
Problem is elsewhere. For now if use https://github.com/hirschmann/nbfc with correct profile (ex. I use HP 8760W) then fan works correctly - program uses temperatures directly from GPU diode/CPU diode.
Without this program, laptop PCH and KBC Controller have i2c conflict and temperature smbus controller show constant 85 degrees for GPU. I am trying to repair this problem, but now I wait for good chip programmer to change GPU VBIOS. VBios may have corrupted parts in chip.
For now that program is temporary solution that work very good. I will update when I work out problem.


My notebook thread is here: https://notebooktalk.net/topic/9 ... ware-modifications/
If someone wants help write to me, I will try to help.

felix1970

QUOTE:

gong2512 发表于 2022-12-19 13:11
是不是bios的风扇自动模式没开启

多谢回复。BIOS里有设置过了，不是这个问题。。BIOS已经被我折腾了个遍。

felix1970

QUOTE:

Mashcar12 发表于 2022-12-19 18:47
In bios there is option "Fan always on when AC plugged in" but it only makes fan run always on sil ...

Hey Bro, you vividly explains what "dogged effort" is.  I, as a matter of fact, have turned to my old DELL Precision M4800 already, which runs quiet enough with no fan noise. Quiet enough.

It's a hard choice to change from the ZBook to DELL, because I got a super bright 144hz BOE screen to the ZBook, making eyes quite comfortable even under the Sun outside.  However, guided by your valuable information I found a lot of relevant topics online, which impressed me that the issue could only be addressed by programming techniques, if not to change the motherboard/GPU. So I decided to throw the HP laptop aside and picked up the square DELL machine.  So many things cry out to be done and always urgently.

By the way, there's some key info led to my decision (Perhaps they are useful to you):
1) https://h30434.www3.hp.com/t5/No ... rature/td-p/2592307
2) https://h30434.www3.hp.com/t5/No ... roblem/td-p/8546774 (in this thread, please notice the reply from JayDee88, who shows value fix programming places).

Mashcar12

I did not managed to find out cause or repair it, but newer Quadro RTX 5000 works correctly with 8570w. Fan also works without any program, in BIOS etc. Cheers!