Re: USB device detection problem

[Nick Hudson <skrll%netbsd.org@localhost>]

On 06/25/17 11:06, Mike Pumford wrote:
> Just trying to fire up NetBSD 8-BETA on my builder machine but I've 
> run into a bit of a showstopper (for me) bug in the new kernel.
>
> On NetBSD 7-STABLE (Apr 14th) my KVM is detected as:
> uhub6 at uhub1 port 6:  , class 9/0, rev 1.10/1.00, addr 1
> uhub6: 4 ports with 4 removable, self powered
>
> And then the kernel carries on an finds the keyboard and mouse 
> downstream of that device.
>
> In NetBSD 8 I get:
> uhub6 at uhub1 port 6: vendor 0557 (0x557) product 8021 (0x8021), 
> class 9/0, rev 1.10/1.00, addr 1
> uhub6: 4 ports with 4 removable, self powered
>
> <ATA and other uhub detection removed>
> uhub6: device problem, disabling port 1
>
> This means I have no console keyboard. Anything I can do to help track 
> this down?
>
> I've also attached full dmesg from Both 8-BETA and 7.1-STABLE.

So, to be clear these builds are from recent netbsd-8 and netbsd-7 trees 
and therefore both have approximately the same sys/dev/usb code?

If so, I wonder if using msi interrupts is part of the problem?


-xhci0 at pci0 dev 20 function 0: vendor 0x8086 product 0x8cb1 (rev. 0x00)
-xhci0: interrupting at ioapic0 pin 21
+xhci0 at pci0 dev 20 function 0: vendor 8086 product 8cb1 (rev. 0x00)
+xhci0: interrupting at msi2 vec 0

Can you check interrupt counters (vmstat -i) ?

> Mike

Nick