reiyu Posted November 21, 2012 Share Posted November 21, 2012 I'm basically at the same boat as this guy: Brightness function problem (y580) - Lenovo CommunityReplaced a screen, and I'm only getting 2 levels of brightness.Hopefully someone could help me out with this. Quote Link to comment Share on other sites More sharing options...
svl7 Posted November 21, 2012 Share Posted November 21, 2012 Probably an issue with the acpi, or your new screen really only supports two brightness levels... that's also possible. If you get the exactly the same screen model as previously you won't have issues. No idea what could be done about this. Quote Link to comment Share on other sites More sharing options...
reiyu Posted November 21, 2012 Author Share Posted November 21, 2012 could the cable also be an issue? i read this: Y580 40 pin LVDS dual channel LCD Cable - Lenovo Communityso say for example, i have a dual channel monitor and cable, then switched to a lower end one with single channel. would that have caused this?long story for what happened: sent my laptop back to lenovo for RMA, they replaced the screen (which they shouldn't have) from 1920x1080 to 1366x768. after it got back to me, it was already only producing 2 brightness levels. i opened the baby up (auto void warranty, since i don't want to send it back to those idiots), and checked that the cable is in tact properly. how do i know if the cable is dual channel or not? if so, how can i tell if the monitor is also dual channel? Quote Link to comment Share on other sites More sharing options...
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