Exactly the same bug here, but I also affected the bug in Windows 7(tested for many many times).
-- [gm45] Backlight sometimes stays off after resume on Lenovo X200 https://bugs.launchpad.net/bugs/580225 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
