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

rod40cool rodsingleton at iprimus.com.au
Sun May 4 02:57:52 UTC 2008

>Daniel Gimpelevich <daniel at gimpelevich.san-francisco.ca.us> writes:
>> On May 3, 2008, at 8:24 AM, Perry E. Metzger wrote:
>>> That's not a "solution". You're almost certainly just using the low
>>> speed ports instead of the high speed ports. It should not be the case
>>> that some people have difficulty using USB high speed.
>> That's what I originally suspected, but I verified that NOT to be the
>> case for him. Everything but the mouse was getting recognized as
>> high-speed devices, but the iPod was not communicating reliably when
>> plugged into the front. Thus, what he was experiencing was not even
>> this bug at all.
>Bizarre. So he just had broken hardware?

It's certainly a solution for me as I said to Daniel. I can't explain why but it's definitely connecting at High Speed now as mp3 transfer from Amarok is very fast now. The front USB ports connect via cables to the motherboard. My motherboard I don't mind sharing with you is http://www.gigabyte.com.tw/Products/Motherboard/Products_Overview.aspx?ClassValue=Motherboard&ProductID=2507&ProductName=GA-M61SME-S2
The specs seem to indicate that all the usb ports front and rear are 2.0/1.1 speed. The only things that I can think of is the cables supplied with the rather cheap case to connect the front usb ports to the mb are sub standard and this is causing the fussy ipod to not getting exactly the right voltage. :)

ehci_hcd module causes I/O errors in USB 2.0 devices
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