Hi Andi,
As you suggested, removing ehci_hcd (using rmmod ehci_hcd) allows the USB
storage device to work. So, to answer your question, yes, the ohci_hcd
driver does work with 3GB's of RAM. Still, knoppix 3.9 IS able to work with
both ehci and 3GB's of RAM, so it still sounds like it's a software problem,
not an nvidia hardware issue.
Jon
From: Andi Kleen <[email protected]>
To: "Jon Schindler" <[email protected]>
CC: [email protected]
Subject: Re: USB storage does not work with 3GB of RAM, but does with 2G of
RAM
Date: 08 Jul 2005 21:29:37 +0200
"Jon Schindler" <[email protected]> writes:
>
> This mainly seems to be an issue with USB mass storage devices like
> USB memory sticks and USB hard drives (I've tried both, and neither is
> assigned a scsi device properly). I am still able to use my USB mouse
> when I have 3GB installed. I'm not sure if that makes it a USB 1.1
> issue or a USB storage issue, but hopefully someone will have some
> insight after looking at the logs. Thanks in advance for any help.
It sounds like the Nvidia EHCI controller has trouble DMAing to high
addresses. Would be a bad bug if true.
Does it work when you disable EHCI and only enable OHCI? (this will
limit you to USB 1.1)
-Andi
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