Luminati Posted November 25, 2012 Share Posted November 25, 2012 Hi, I'm an owner of Dell e6420. Followed guidlines and used DSDT from http://www.insanelym...age__hl__ e6420 . That article specifically says to disable Optimus and thats what I was doing for a long time, but... when I booted in this choppy mode -> sleep and brightness control started working! It might be just a hint to get sleep working in non-Optimus mode (NVS 4200M only), but still worth a try. *Interesting to note: the screenshot I made when running in this unusable mode was completely fine (no artifacts and full desktop), so I had to picture this with iPhone. Thats what I get - only half of screen is shown and with a lot of artifacts: Link to comment Share on other sites More sharing options...
tonysanz Posted August 6, 2013 Share Posted August 6, 2013 hello do you found a fix for this? Link to comment Share on other sites More sharing options...
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