Edge Computing Division Users Forum

bash-4.2# modinfo ohci_hcd
filename: /lib/modules/3.10.5-smp/kernel/drivers/usb/host/ohci-hcd.ko
license: GPL
description: USB 1.1 'Open' Host Controller (OHCI) Driver
author: Roman Weissgaerber, David Brownell
alias: pci:v0000104Ad0000CC01sv*sd*bc*sc*i*
alias: pci:v*d*sv*sd*bc0Csc03i10*
alias: platform:ohci-platform
depends:
intree: Y
vermagic: 3.10.5-smp SMP mod_unload PENTIUMIII
parm: distrust_firmware:true to distrust firmware power/overcurrent setup (bool)
parm: no_handshake:true (not default) disables BIOS handshake (bool)

In other words, for reliable usb3 operation, do

modprobe ohci_hcd no_handshake:true

which will disconnect the usb3 port from unreliable BIOS temperature readings.

Or, maybe it's the

distrust_firmware:true

parameter that does the job. I get the two mixed up. Someone who really knows the machine ought to comment. Something definitely needs to make the usb3 work. And, who knows? Maybe that affects the HDMI sound output under Linux.