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emobo
Blue Screen Again
Posts: 43
Registered: ‎07-03-2009
Location: Canada
Views: 698
Message 1 of 1

T400 WXGA+ TFT w/ LED BL flickers when brightness is at lowest level

Hi There, I got a new T400 and I noticed that when I'm running unplugged (power source optimized power config) and LCD brightness drops to the lowest level. I can see what appears to be the LCD backlight flickering (or the refresh rate has gone down). Increasing the brightness by 1 level causes this to go away. It's as if the lowest brightness setting is not providing enough power to the LCD and/or backlight.

 

I've got a WXGA+ TFT w/ LED BL with the intel built in graphics. All my drivers are up to date as of July 19th 2009. (I think there is one new bios update, but I just updated it less than 1 week ago...)

 

Wondering if anybody else here has similar experiences. I noticed in when I was working in a dim room, off the power supply.

 

Thanks!

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