USB & Gigabyte GA-6BXD observation

[Lee Mitchell]

I have found that if the bios setting :-
"MPS Version Control for OS"
is set to 1.4, then the usb stuff appears to not receive any interrupts. If
set it to 1.1 then all is fine.
I assume that no interrupts is the problem, i get a load of timed out
messages and an error 110.

Is this a known thing ? I noticed that it also allocates interrupts
differently, ie my tv card gets assigned irq 9 when MPS is set to 1.1
as below, but when its set to 1.4 then it gets assigned to IRQ 18.

[lee@server lee]$ cat /proc/interrupts
           CPU0       CPU1
  0:      62928      61788    IO-APIC-edge  timer
  1:        129        144    IO-APIC-edge  keyboard
  2:          0          0          XT-PIC  cascade
  4:       2868       3365    IO-APIC-edge  serial
  5:     387385     382575    IO-APIC-edge  soundblaster
  9:        206        156   IO-APIC-level  acpi, bttv
 10:          6          3   IO-APIC-level  usb-uhci
 11:       9471       9356   IO-APIC-level  eth0
 12:         48         48   IO-APIC-level  aic7xxx
 13:          1          0          XT-PIC  fpu
 14:       4584       4405    IO-APIC-edge  ide0
 15:       1999       1982    IO-APIC-edge  ide1
NMI:     124660     124660
LOC:     124642     124632
ERR:          0

Lee Mitchell
www.spamtastic.demon.co.uk
[e-mail]