Screen flickers


when run mbp 4,1 om battery , after wake-up after has gone sleep, , start use safari or itunes screen flickers. when run on battery not when plugged in.

update 10.5.3 , 10.5.4 didn´t help. i'am confident software issue because when use cinema display problem still there.
 

wirelessly posted (iphone: mozilla/5.0 (iphone; u; cpu mac os x; en) applewebkit/420.1 (khtml, gecko) version/3.0 mobile/4a102 safari/419.3)

have checked energy saver settings? may want check those. try changing peformace settings processor while on battery see if helps. if doesn't work, may want call tech support or take apple store.
 


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