It was just a screen brightness issue after all, possibly a duplicate of similar issue like https://bugs.launchpad.net/ubuntu/+source/xserver- xorg-video-nouveau/+bug/713864
The 12.10 live CD and the fresh install both start also the X-windows, but the screen is just dimmed to black. FN+right arrow keys make it visible. ** Changed in: linux (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094279 Title: 12.10 LiveCD won't boot to X-windows with EFI in Acer Aspire V3-771g To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1094279/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs