[Bug 88746] Re: ehci_hcd module causes I/O errors in USB 2.0 devices

[John P. Richardson]

More petrol for the fire...

Test Device: Smartparts PXE7 7" LCD digital picture frame
Test System 1: MSI Wind netbook running Xubuntu 8.10 kernel 2.6.27-9-generic
Test System 2: Homebrew kit running Ubuntu 8.10 kernel 2.6.27-11-generic on MSI MS-7253 mainboard.

When I plug the picture frame into the MSI Wind, it works brilliantly.

When I plug the picture frame into the Homebrew system, I get the same
problems as everyone else.  See the attached excerpt from dmesg.

Reducing the max sectors to 128 or 64  has no effect.  Only solution is
to sudo modprobe -r ehci_hcd each time I want to access the device.



** Attachment added: "Excerpt of dmesg output for USB I/O issue"
   http://launchpadlibrarian.net/20872999/dmesg-output.txt

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ehci_hcd module causes I/O errors in USB 2.0 devices
https://bugs.launchpad.net/bugs/88746
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