Re: USB Lockups

From: Johannes Erdfelt (
Date: Mon Jan 07 2002 - 19:36:00 EST

On Mon, Jan 07, 2002, Michael Cohen <> wrote:
> More experience with USB lockups here.
> I have an Apollo Pro (694x) and an Apollo Super South (686b),
> and it's interesting how quickly this machine freezes under 2.4.18-pre1.
> All I have to do is send about 100KiB/second over my NIC and the USB
> (moving the mouse and tapping on the keys on my USB HID devices causes
> a hard lock with no messages of any kind. Can't even get a serial
> console.)
> Tried with UHCI and JE driver. JE doesn't recognize the USB controller
> half the time. It seems to me that this is similar to the problem
> with a saturated PCI bus that someone posted a latency fix for.
> I'd appreciate any input. A similar machine does this on windows as
> well, too. BIOS is as late as it gets.

Doesn't recognize the USB controller half the time? This is something I
would expect to either work all of the time, or none of the time.

Do you get any error messages?


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