Re: USB storage does not work with 3GB of RAM, but does with 2G of RAM

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



I just thought that I would add, USB works fine if I boot with knoppix 3.9, or with Windows XP, even with 3GB's of RAM installed. It's only if I try to use USB mass storage devices, Fedora Core 4 64 bit, and 3GB's of RAM at the same time that I get this issue with USB. If I change the OS to XP, but keep the RAM at 3GB, it works fine. If I remove some RAM and only run 2GB's of RAM, then FC4 with the 2.6.12.1 64 bit kernel works fine.
So, to sum things up:
RAM amount OS 64or32bit USB storage works? 3GB FC4 2.6.12.1 64 no 2GB FC4 2.6.12.1 64 yes 3GB XP SP2 32 yes 2GB XP SP2 32 yes 3GB Knoppix 3.9 32 yes 2GB Knoppix 3.9 32 yes

Thanks again,

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


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux