I'd better confirm that, same as @spectral, this is a brightness bug. The brightness is at the very lowest level, so it appears as if the laptop screen is off.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1099204 Title: Laptop screen turned off with kernel 3.8.0 in raring Status in “linux” package in Ubuntu: Triaged Bug description: I have a Lenovo Y580 Ideapad. When booting with the 3.8.0 kernel, the screen turns off when the ubuntu logo and progress bar should display. Xorg starts, I can hear the startup sound, but the screen is turned off. Booting on the 3.5.0 kernel works fine. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1099204/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
