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Old 12-27-2009, 02:18 AM
Paul Hartman
 
Default USB mass storage device slow in Gentoo, fast in Windows...?

On Sat, Dec 26, 2009 at 7:00 PM, Hung Dang <hungptit@gmail.com> wrote:
> On 12/26/09 15:54, Paul Hartman wrote:
>> Hi,
>>
>> I got a Nokia N900 linux internet tablet/phone a few days ago, and
>> when I connect it in USB Mass Storage mode to a Windows Vista computer
>> I can write at 17MB/sec, but when I connect it to my Gentoo box my
>> writes are really slow, between 500-900kb/sec depending on if I mount
>> in "sync" mode or not. As far as I know it should be just a totally
>> standard/generic mass storage device. (there were no drivers or
>> software install needed in windows, it just worked)
>>
>> Other USB devices plugged into the same port go full speed, and AFAIK
>> everything appears as if it should be high speed USB 2.0. Has anyone
>> seen something like this before? I'm not sure what the deal is. It
>> takes 20 minutes to copy 1 gigabyte from Linux and takes just under 1
>> minute to do the same in Windows.
>>
>> I'm not sure about debugging USB or what the options are. Everything
>> I've used previously has worked without any hassle.
> Have you received a lot of debugging messages at the output of dmesg
> when copying files?
>
> Hung

No errors, no strange messages at all, it seems normal (only slow). I
have other USB devices like SD card reader, external HDD, and they
perform at full speed when plugged into the same port, so it's weird
to me.

Thanks
Paul
 

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