Bug 283186 Investigation Details
Enable USB Debug at Boot Time
Insert a -CURRENT USB-Stick Install Media (*-memstick.img or *-mini-memstick.img would do) into one of the problematic USB Ports
At the FreeBSD Boot Options Menu choose option 3. Escape to loader prompt
- At the boor loader prompt set these USB Debug Kernel Tunables
set hw.usb.dev.debug=1 set hw.usb.debug=1 set hw.usb.umass.debug=1
- Then continue the boot process
boot
- Try to capture the output via some photos or a video recording using your phone camera