User-Agent:       Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML,
like Gecko) Chrome/53.0.2785.143 Safari/537.36
Build Identifier: 

When an additional USB device is plugged in during boot, the operating system
hangs indefinitely when loading the initial ramdisk. Note that the machine
itself boots and GRUB2 loads and is working properly. No matter which boot
option is chosen in GRUB2, OpenSUSE Leap 42.1 never completes the booting
process.

There are a number of USB devices plugged in while the machine can boot but if
ONE is added, it no longer boots. Oddly, the same device can be added later and
functions properly AFTER the booting process is completed.


Reproducible: Always

Steps to Reproduce:
1. Plug USB device such as a Lexar Micro SDXC USB 3.0 reader into an available
USB 3.0 port.
2. Turn on machine.
3. Select any option in GRUB2 and press enter or wait for the default to
trigger.
Actual Results:  
Machine hangs while loading initial ramdisk.

Expected Results:  
Boot process completes normally and all USB devices function properly.