Hello,

I have another example that behaves somewhat different from GA-H61M-USB3-B3.
The MB is GA-73UM-S2H. The chipset is nVIDIA GeForce 7150/nForce 630i.
Kernel message are:

Plan 9
cpu0:  2667MHz GenuineIntel Core 2/Xeon (cpuid: AX 0x06FB DX 0xBFEBFBFF)
ELCR: 0C20
LAPIC: 0xfee00000 0xe0000000
mpinit: scanning acpi madt for extra cpus
cpu1:  2667MHz GenuineIntel Core 2/Xeon (cpuid: AX 0x06FB DX 0xBFEBFBFF)
mtrrfix1: i9: 0 404040404040404
mtrrfix1: i10: 0 404040404040404
pcirouting: ignoring south bridge PCI.0.0.0 10DE/07C0
#l0: igbepcie: 1Gbps port 0xE4080000 irq 10: 6805ca00fbd2
mpintrenable: out of choices eisa -1 isa 5 tbdf 0xc002000 irq 11
intrenable: couldn't enable irq 11, tbdf 0xC002000 for usbohci
mpintrenable: out of choices eisa -1 isa 5 tbdf 0xc002100 irq 5
intrenable: couldn't enable irq 5, tbdf 0xC002100 for usbehci
3198M memory: 149M kernel data, 3048M user, 3673M swap
usbinit...usbd...no usb disk...waiting for dhcp...

auth...can't open /dev/sdXX/nvram: '/env/nvroff' file does not exist

authid: ehci 0xe0003000: polling
usb/disk... bootes
authdom: aichi-u.ac.jp
auth password:
secstore password:
can't write key to nvram: '/env/nvroff' file does not exist
usbinit...partfs...version...time...
swap: /dev/swap
post...

init: starting /bin/rc
ar# ls /dev/sd*
/dev/sdU0.0/ctl
/dev/sdU0.0/data
/dev/sdU0.0/raw
/dev/sdctl
ar# usb/probe
ep1.0 roothub csp 0x000009 ports 10 ohci
ep2.0 roothub csp 0x000009 ports 10 ehci
ep3.0 storage csp 0x500608 vid 0x0411 did 0x0098 BUFFALO 'USB Flash Disk' ehci
ar#

Note that storage is detected, but "no usb disk" and then "can't open /dev/sdXX/nvram".
The message: "couldn't enable irq 5, tbdf 0xC002100 for usbehci" might be a problem.

Kenji Arisawa