In my case I think it's related to the graphic card an Nvidia Geforce GTS250. There are some problems with this card. First the Nomodeset option is needed to install Ubuntu both in Oneiric and Precise. Then I have to boot in recovery mode to be able to login and get the system working, else I get the corrupt login screen. When the proprietary Nvidia driver is installed the system behaves OK.
For the moment I am using an AMD Radeon 5450 with the Gallium driver and that works OK. On 02/17/2012 07:55 PM, Jiri Grönroos wrote: > Do you have any photos of the problem? What is your GPU and driver? > Please check bug 933322. > -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/897835 Title: Corrupt login screen Status in “lightdm” package in Ubuntu: New Bug description: Corrupt login screen during ISO-testing of Precise Alpha 1. The login screen har a lot of artifacts. ctrl+alt+f1, control+alt+del does not work. No input fields are working. However if I boot with recovery mode, selects the alternative to start as root, type exit and then selects normal boot the login screen is correct presented. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: lightdm 1.0.6-0ubuntu4 ProcVersionSignature: Ubuntu 3.2.0-2.5-generic 3.2.0-rc3 Uname: Linux 3.2.0-2-generic x86_64 ApportVersion: 1.90-0ubuntu1 Architecture: amd64 Date: Tue Nov 29 20:40:41 2011 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1) ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/897835/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
