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ThinkPad NotebooksThinkPad: T400 / T500 and newer T series Laptops
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6 Posts

05-05-2011

Japan

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  • Message 21 of 25

Re: T420s fan + hibernation bug

2011-05-18, 14:54 PM

It's almost correct, but fan speed does not decrease when laptop becomes cool, in idle mode.

My T420s is now under servicing in Lenovo factory, so sorry I can't check details again.

 

I found a similar topic on X series board.

X220 - fan constantly on / revving up and down

http://forums.lenovo.com/t5/X-Series-ThinkPad-Laptops/X220-fan-constantly-on-revving-up-and-down/td-p/425965

They need help also.

 

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3538 Posts

07-12-2010

Malaysia

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  • Message 22 of 25

Re: T420s fan + hibernation bug

2011-05-19, 3:49 AM
@k_crow,

The X220 fan issues are different symptom compared to the T420s one as the T420s one only happens after sleep / hibernate mode and the X220 one is revving up and down.

@Roy,

Appreciate if you could PM me the following.

MTM:
S/N:
BIOS:
OS Win 7 x64/x86 Home/Pro/Ulti:
Power Manager:
Power Management Driver:
Power Manager Profile:

After coming out of sleep/hibernate, the fan does not slow down when system is idle and fan does not speed up when the laptop is warm.

@Yangorang,

Since you are a T420s user, could you check this thread from Roy.

http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/Fn-Hotkey-display-T420s/m-p/436901#M43993

Let me know if you are having the same issue.

//JameZ
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207 Posts

08-28-2008

Israel

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  • Message 23 of 25

Re: T420s fan + hibernation bug

2011-05-19, 9:16 AM

MTM: 4170CTO (?)
S/N: XXXXXXXX
BIOS: 1.09
OS Win 7 x64/x86 Home/Pro/Ulti: Pro 64bit
Power Manager: 3.52
Power Management Driver: 1.62
Power Manager Profile: Energy Saver

 

Edit: installed BIOS 1.12 today.

Moderator Note: Serial number removed to prevent misuse.

___________________________________________________________
Lenovo Thinkpad T420s
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3538 Posts

07-12-2010

Malaysia

5065 Signins

104816 Page Views

  • Posts: 3538
  • Registered: ‎07-12-2010
  • Location: Malaysia
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  • Message 24 of 25

Re: T420s fan + hibernation bug

2011-05-23, 4:09 AM
@Roy,

Check inbox.

//JameZ
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47 Posts

04-05-2008

Germany

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  • Message 25 of 25

Re: T420s fan + hibernation bug

2011-07-28, 7:54 AM

Are those mentioned bugs fixed now? Currently evaluating what to buy...

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