Public bug reported: I am having this weird issue:
Recently I have installed ubuntu 11.10 and 12.04 using a live flash drive. Installation finished without any hiccup. But, when I reboot, it freezes before reaching the login screen. All I see is only a purple screen, not even mouse pointer. The login screen appears only when I disable KMS by appending "nomodeset". Disabling KMS lets me login and use ubuntu, but resolution is low(800x600 while my monitor supports 1366x768) and no 2d/3d acceleration. It looks ugly. Interestingly, resolution, 2d/3d accleration works flawlessly when I boot from a live flash drive. All the problems start after installation. System configuration: CPU - amd athlon2 x4 640 Chipset - 880GM Memory - 4G Graphics card - AMD HD6670( I am using VGA, as my monitor doesn't have hdmi/dvi) In short, the problem is: ubuntu works flawlessly from a live media but freezes before reaching login screen when installed and run from system hard disk. Only disabling KMS lets me login and continue, but with ugly graphics. I encountered the same problem when I tried Fedora-17 and submitted bug report to fedora's bug tracking system. Please see it here: https://bugzilla.redhat.com/show_bug.cgi?id=835861 ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1019948 Title: graphics freezes without "nomodeset" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1019948/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
