Hi guys,
I have run across this issue before in the past, but on battery power Lenovo does not enable the ability to run the screen at full brightness, period. Someone said that there is an option to enable the lcd on full brightness in the BIOS but I do not see this option. I do recall this option when I had a T43, but now when I unplug on an x200 tablet and t400s, I get a subtle, graded dimming of the LCD. Even though it's showing max brightness, it's not truly at max b/c as soon as I plug it in, the screen does a subtle, graded increase in its brightness. All told it's probably about a 1 notch difference and I am confident that I am not imagining this. I want the option to run my screen at full brightness when on battery, da**it!
Could anyone help me out or at least tell me that I'm not out of my mind?
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i will have a look at my T400s.
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Make sure you are @ 60hz and not 50hz.
I have seen this as well on our T400
Along with the 50hz screen flashing of the refresh rate -
It's one of the key reasons I bought a new personal T510, which does not do this at all, i.e. there is zero difference when running on battery or AC given similar Power Manager settings.
My guess is the fluorescent lighting ages; I'm hoping the LEDs on the T510 do not. -
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I know that Lenovo has the screen refresh go down to 50hz during a power saver mode & when coming out of a sleep, I also think this invokes a saver mode scaling the screen back light intensity that is several steps lower.
Speaking of Apple, it would be great to have my mid 09 mbp screen with in my T400
Can not get full brightness on battery power
Discussion in 'Lenovo' started by unagimiyagi, Apr 23, 2010.