I have the same problem after switching from Xubuntu 12.04 to 14.04 on a LENOVO ThinkCentre:
LENOVO 912075G/LENOVO, BIOS 2UKT55AUS 06/03/2008 AMD Athlon(tm) 64 X2 Dual Core Processor 5200+ The first message after 50 sec pause is always 'regulator-dummy: disabling' In my case the problem is gone when booting with the option 'nolapic' -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1308264 Title: Ubuntu 14.04 Beta 2 stuck at "Switched to clocksource tsc" when booting up, then resumes booting to the login screen, after 1 minute To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1308264/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
