On 2004-01-03, Ged Haywood <[EMAIL PROTECTED]> wrote:
> On Fri, 2 Jan 2004, John Goerzen wrote:
>
>> I just upgraded my IBM Thinkpad T40p from 2.4.23 to 2.6.1rc1.  All seems
>> well, except for USB, which is excruciatingly slow after the upgrade.
>> [snip]
>> hub 2-0:1.0: new USB device on port 2, assigned address 10
>> usb 2-2: control timeout on ep0in
>> usb 2-2: palm_os_4_probe - error -110 getting connection info
>
> Might it be an interrupt problem?

Let me just brainstorm out loud for a minute...

I had at first discarded that possibility, because on this machine,
things are all configured automatically.  However, on checking
/proc/interrupts, I do see this:

 11:      61549          XT-PIC  ehci_hcd, uhci_hcd, uhci_hcd, uhci_hcd,
 Intel 82801DB-ICH4, ath0

ath0 is my wireless Ethernet card that's built-in (mini-PCI, not
PCMCIA).  So it would appear that USB and wireless Ethernet are sharing
an interrupt.

So the question is: 1) can they do that?  I'm assuming that the answer
is no.  So what I really need to know is 2) how to fix it, and why was
2.4.x OK?

I have turned on CONFIG_PNPBIOS in 2.6.x; do you think that is a
problem?  Is there any other way to prevent this interrupt sharing?

Thanks,
John



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