I have plenty of USB devices, and I guess so do other people, so we need some logs here indeed. Can you please try to select the rescue mode in grub, boot with all devices attached, and see whether this causes any hangs as well? The "starting udev" message does not mean much, as most of the boot process is quiet by default. In rescue mode it's not.
If it's hanging with some more messages appearing, perhaps you can take a photo and attach it here? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1047688 Title: Boot fails on udev if USB devices are present To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/udev/+bug/1047688/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs