Thinkpad X1 Carbon Gen 9 - wrong sensor

Shuzhengz / TPFanCtrl2

ThinkPad Fan Control 2 (Dual Fan) for Windows 10 and 11

The Unlicense

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Thinkpad X1 Carbon Gen 9 - wrong sensor #33

Closed knutov closed 2 years ago

knutov commented 2 years ago

It seems wrong sensor is used to mesure CPU temperature with X1 carbon gen 9:

So in "smart mode" with settings like

Level=44 0 
Level=45 1 
Level=46 2 
Level=48 5 
Level=50 7

it's always run at speed 7 while real cpu temperature is 42.

X1 carbon gen 9 with I7 - 20XW005TRT Latest BIOS - N32ET75W 1.51 Latest Windows 10 Pro Latest TPFanCtrl2

How to fix it?

Shuzhengz commented 2 years ago

Yeah I just got a new computer and the program stopped working. I think newer ThinkPads have different EC addresses or just a different way to control the fan with their new intelligent cooling that you can't turn off. I'll be working on a fix for this once I get a chance to. Thank you for reporting the issue!

knutov commented 2 years ago

fan control works fine, in manual mode I can set any speed (in fact with i7 I have to always use speed 7 to prevent it to be too hot to work with keyboard in "optimized" and "performance" mode)

Shuzhengz commented 2 years ago

yeah it seems like lenovo has moved the address for the temperature sensor in the EC

jtlarson commented 2 years ago

My workaround is to modify the ini file to ignore the pwr and pci sensors:

IgnoreSensors=no5,pci,pwr

knutov commented 2 years ago

IgnoreSensors=no5,pci,pwr

Thanks, it works!