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
lee@spamtastic.demon.co.uk
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Jan 15 2000 - 21:00:14 EST