I have this problem or bug or feature, whatever it is, on my e420-- described in this thread T410 unstable screen brightness - Lenovo Community. Has there been a fix found for this? All my drivers are current.
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Did you already try this in the Intel GMA control panel? Re: T410 unstable screen brightness - Page 2 - Lenovo Community
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Yeah I missed it, under the battery tab it says display power saving technology, which seems to turn it off.
Auto dimming on battery power
Discussion in 'Lenovo' started by capt jerk sparrow, Apr 16, 2012.