Workaround! For noobs like me, who just need to get the thing to work and don't want to root around obscure system settings, this did the trick: reverting to the Saucy Salamander kernel.
apt-get install linux-image-generic-lts-saucy ... assuming it's in the cache after an upgrade, should be simple. All the new features in 14.04 seem to work, just stops the eternal restart process. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1309578 Title: Ubuntu 14.04 suddenly reboots when booting from Live USB AMD A8 6600k To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309578/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs