I attempted to boot with all USB devices plugged in, and received the errors you see in the screenshot.
You'll see a lot about USB devices. See also the errors on /dev/sda (internal SSD) on 3 and 4. I have also been unable to boot because /dev/sda was a problem, as a standalone issue, but for whatever reason I had stopped experiencing that issue. After the boot you see in the screenshots, I attempted to boot into recovery mode with no devices present. The system repeatedly hang on starting udev with no error messages. I then reconnected a keyboard and mouse, and the system actually booted up mostly fine. I was just unable to use the laptop's native keyboard and trackpad, even if the USB devices were removed. Strange issue. -- 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
