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mzhykov97
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Posts: 4
Registered: ‎03-19-2014
Location: Ukraine
Views: 385
Message 1 of 4

Why not adjustable screen brightness?

I had lenovo n580a recently with Windows 8 with 64bit preloaded.I got bored with Windows 8 hence downgraded to Windows 7 Home Premium 64bit.

 

Windows 7 worked very fine after installing the device drivers except for the LCD brightness that doesn't respond to any fine adjustments.

 

In the main page of Windows Power Managemet  as well as the keyboard hotkeys, the slider either goes to the maximum or minimum brightness (no stages in between though in Windows 8 there were more than 6 stages)

 

In the advanced settings screen, as far as I adjust brightness (for example to 50% on battery, 70% plugged in) this doesn't lead to any change in the brightness practically.

 

How to solve this?

Retired Support Specialist
Posts: 2,826
Registered: ‎08-01-2013
Location: Bangalore
Views: 298
Message 2 of 4

Re: Why not adjustable screen brightness?

Hi Mzhykov97,

 

Welcome to Lenovo Community!

 

I’m sorry to hear that the Brightness feature is not working as expected in your N580 Laptop. Hence, I would suggest you to re-install the LEM (Lenovo Energy Management) and the display drivers from the below link:

 

Do post us back if the issue persists.

 

Best Regards

Shiva Kumar



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mzhykov97
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Posts: 4
Registered: ‎03-19-2014
Location: Ukraine
Views: 285
Message 3 of 4

Re: Why not adjustable screen brightness?

did everything you said, but my problem remains(
mzhykov97
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Posts: 4
Registered: ‎03-19-2014
Location: Ukraine
Views: 275
Message 4 of 4

Re: Why not adjustable screen brightness?

Ноутбук lenovo n580. На windows 8.1 яркость экрана регулируется нормально. А на windows 7 яркость регулируется только в 2-х режимах максимум и минимум. Как это исправить??

 

Moderator Note; translate.google.com translation of above

 

Laptop lenovo n580. On windows 8.1 screen brightness is adjusted properly. A windows 7 brightness is adjusted only in 2 modes maximum and minimum. How to fix it ??

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