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4 Posts

12-20-2010

Austria

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Lenovo U450p Fan control Can someone modify?

2010-12-20, 20:44 PM

Hello!

 

i found a thread where a guy modified the Idepad 350 Bios so that the fan noise is fixed. Can someone also do this for the 450? This would be great! Many thanks!

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13866 Posts

12-07-2009

Czech Republic

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Re: Lenovo U450p Fan control Can someone modify?

2010-12-20, 20:53 PM

ask middleton ( by pm )



Due to my absence, I may not reply your posts and/or personal messages

http://www.krasotaiskusstva.com
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4 Posts

12-20-2010

Austria

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Re: Lenovo U450p Fan control Can someone modify?

2010-12-22, 22:16 PM

hey guys, at the moment im in contact with alexey, and "beta" testing a fixed Bios version.

 

At the moment everthings seems to work fine and the Fan-Bug semms fixed.

 

I dont know if Alexey wants to make the Bios public, ill ask him later...

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171 Posts

10-30-2009

Russia

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Re: Lenovo U450p Fan control Can someone modify?

2010-12-23, 9:45 AM

I think it's time to make the patched BIOS public: Download.

 

Thanks to Jörg (Athlon1) for testing.

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43 Posts

05-02-2009

Germany

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Re: Lenovo U450p Fan control Can someone modify?

2010-12-23, 10:44 AM

that sounds great. so jörg, you have installed and tested this bios on a u450p ? and your model name is 3389 ?

then i will download and install this week, as a christmas present kind of.

 

what has been changed? just the temperature limits or more?

and i know this wuestion will not be answered: why did lenovo not fix this??

 

looking forward to testing and hopefully to a finally silent laptop

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43 Posts

05-02-2009

Germany

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Re: Lenovo U450p Fan control Can someone modify?

2010-12-23, 11:11 AM

ok, i didn't want to wait so i just installed it and: silence! finally.

 

before flashing i did a virus-scan, as i do with all files i download from the internet, seems to be clean. flashing works fine, no problems at all.

after flashing the bios was reset to defualt values, so i had to mute that stupid lenovo-jingle.

then after booting the cpu-load was quite high for a while with wmpnetw.exe (??) and the core temperature went up to 53°C but the fan kept silent! at 55°C the fan went on for a couple of seconds until it was somewhere below 50°C.

the average temperature with just win7 and firefox open is about 47°C, which is for sure some 5-6°C more than before flashing, but that is no problem for me and no problem for a modern cpu! and it is silent.

 

i just can't thank you enough, i really used my u450p as little as possible because the fan noise really annoyed me so much. but as i liked everything else about the u450p (like the casing, the keyboard etc) it is finally the laptop i thought of when i bought this one!

 

happy christmas everyone.

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171 Posts

10-30-2009

Russia

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Re: Lenovo U450p Fan control Can someone modify?

2010-12-23, 12:26 PM

to deshilachado

 

Glad to see that you're fully satisfied with your laptop now.

I didn't change temperature thresholds, only two fan speeds were modified (they are used when CPU temperature is below 55 Celsius). Now the fan rotates on almost inaudible speed while CPU temperature doesn't exceed 55 degrees.

 

Of course your laptop will be a little hotter in idle than before but it's inevitable payment for silence.

By the way, you can safely turn off the useless wmpnetwk.exe (see all details here).

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4 Posts

12-20-2010

Austria

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  • Message 8 of 12

Re: Lenovo U450p Fan control Can someone modify?

2010-12-23, 17:03 PM

Hello guys!

 

I tested the Bios and it really works well!

 

No more on/off fan noise ;)

 

Its a shame that Lenovo couldnt fix this problem and users had to do this...

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43 Posts

05-02-2009

Germany

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  • Message 9 of 12

Re: Lenovo U450p Fan control Can someone modify?

2010-12-25, 10:46 AM

now i have been using the laptop for 2 more days and still i am highly satisfied! very well done, middleton, thank you so much. 55°C indeed is no problem for a CPU and while surfing the internet and listening to music it hardly ever reaches temperatures above 50°C !

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17 Posts

08-01-2011

Germany

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  • Message 10 of 12

Re: Lenovo U450p Fan control Can someone modify?

2011-08-02, 19:06 PM

Hello everyone,

 

thank you for your modified bios rom! The flash did work, nothing destroyed, what I worried about, since I thought bios flashes are dangerous.

In Windows 7, my cpu temperature is often 49-57°C, in Ubuntu it is 64°C. I rarely felt this new quietness, when it was around 50°C in Windows, but never in ubuntu. I am now trying to undervolt the cpu in linux, because fan control does not seem to be  possible, neither with SpeedFan in Windows nor with lm-sensors in Linux.

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