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  1. Bug #177235
  2. Comment #22

Comment 22 for bug 177235

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Matthew Wilson (evandar) wrote : Re: [Bug 177235] Re: slow USB 2.0 drive: it's mounted as USB 1.0, not USB 2.0!

Thanks for the email Gaspard. I have tried to see the speed on the drive
tab but unfortunately no speed is displayed on my system. This could be
because the drive is listed as non-removable instead of removable. I have
no idea why. I have USB 1 and USB2 ports on this machine. The USB1 ports
give less than 1MB transfer speeds, the USB2 ports less than 10MB. I'll
find the correct existing bug-report. (I know I've seen ti somewhere).

Thanks again
Matt.

2009/2/20 Gaspard Leon <email address hidden>

> @Matthew:
>
> Speeds under 8MB/sec *are slow*, but this bug refers to USB 1.1 or 1.0
> which is VERY SLOW e.g. 1.5MB/sec
> http://en.wikipedia.org/wiki/Usb#USB_signaling
>
> what you're seeing might be another related or unrelated bug in some
> part of the data path between the OS and the drive.
>
> just a thought: check by right-click, properties in nautilus, go to
> drive tab, see speed "480 Mbps" or "12 Mbps"... the first is USB 2.0 and
> the second is 1.0/1.1
>
> --
> slow USB 2.0 drive: it's mounted as USB 1.0, not USB 2.0!
> https://bugs.launchpad.net/bugs/177235
> You received this bug notification because you are a direct subscriber
> of the bug.
>