Not trying to be an expert here, but this might help others too so here I am. So I am having the same issues here as well trying to install Ubuntu 14.04 LTS on a Live USB. I am using an "Trinity" APU model here. I have used a kernel commandline "noacpi" in GRUB edit menu, just get these logs. Here's my hardware, just incase if it's needed:
AMD A6-5400k Trinity APU | AMD Radeon HD 7540D "AMD ARUBA" | MSI FM2-A55M-E33 Motherboard | Kingston DDR3 1333 RAM | Corsair VS450 PSU ** Attachment added: "lastlog" https://bugs.launchpad.net/ubuntu/+bug/1309578/+attachment/4089810/+files/lastlog -- 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 reboots while installing from USB To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1309578/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs