Have the same problem. Got the "Starting version 219" error to "ACPI PCC probe failed" messages on every boot regardless of driver. My graphics card is an added on GT630. There is an ATI grphics processor on-board that I am not using. Could it be that the driver is loading before the ACPI PCC probe is complete? It really feels like a timing issue on startup. I did the upgrade and have done several clean installs with no change. The OS is only functional with the X.Org X server- Nouveau display driver, but I still get the errors on startup. Any attempt to use any NVIDIA driver results in a black screen.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1447978 Title: After update from 14.10 to 15.04 boot stops at black screen displaying "Starting version 219" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1447978/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
