On my side I bought the very same laptop with Nvidia VM4200 card and everything works like a charm (resolution, external display, suspend to ram). I remastered the Intel based laptop (the one that flickers) with Win7 only and it works like a charm on Win7 (no flickering at all).
I do believe there is a very poor support from Intel on Sandy Bridge based graphic chipset. Thankfully, Nvidia did a better job (sadly not Free :'() -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/794474 Title: latitude e6420 screen flickering (sandy bridge intel video card) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/794474/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

