You have been subscribed to a public bug: Booting without the nomodeset or i915.modeset=0 results in a complete system lockup during boot. This has increasingly been happening in the later versions of Lubuntu 14.10, but after upgrade to 15.04 has become permanent.
The only way to start is using the nomodeset or i915.modeset=0 settings, which reduces the resolution which can be used. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.1 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: LXDE Date: Sun Apr 26 19:17:48 2015 InstallationDate: Installed on 2015-03-18 (39 days ago) InstallationMedia: Lubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) SourcePackage: xserver-xorg-video-intel UpgradeStatus: Upgraded to vivid on 2015-04-26 (0 days ago) ** Affects: xorg (Ubuntu) Importance: Low Status: Incomplete ** Tags: amd64 apport-bug package-from-proposed vivid -- System lockup during boot if not i915.modeset=0 or nomodeset is used https://bugs.launchpad.net/bugs/1448720 You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp