modinfo ub
modinfo: could not find module ub
It's as slow as it is in my usb 1.1 laptop. However,
in WINXP, it's WAY faster.
--- Alan Stern <[EMAIL PROTECTED]> wrote:
> On Sun, 16 Jan 2005, Stephen J. Gowdy wrote:
>
> > On Sun, 16 Jan 2005, John H. wrote:
> >
> > > My usb 2.0 devices(SD card reader and usb thumb
> > > drive), while being listed w/usbview as 480mb/s,
> are
> > > going around 1.1 speed.
> > >
> > > ehci-hcd is loaded, what else could be the
> problem?
> >
> > They are just slow? What speed are you actually
> seeing.
>
> Stephen is right. You have to be careful when
> talking about things like
> this. If usbview lists a device as using 480 Mb/s
> then that's the speed
> it's using. Now maybe the _throughput_ is lower
> than you expect -- but
> that's a different matter. You can also see the
> speed in
> /proc/bus/usb/devices (or wherever you have the
> usbfs filesystem mounted).
>
> A decrease in speed could be caused by ub device
> driver. Are your devices
> bound to usb-storage or to ub? If they are using ub
> then you have to
> disable the ub driver in the kernel configuration.
>
> > > Also, I noticed on upgrade to fc3, /proc/bus/usb
> was
> > > no longer mounted, so I added it to fstab.
> > >
> > > Do I need to? Can I just have /sys/bus/usb,
> which is
> > > up by default?
> >
> > It isn't needed for normal operations I believe,
> but it is very useful to
> > find out what is going on. I've not actually
> looked in /sys/bus/usb,
> > perhaps it is very similar?
>
> It doesn't matter where the usbfs filesystem is
> mounted; it will still
> contain the same information. However there's
> probably a lot of programs
> that expect to find it under /proc/bus/usb, so it
> might be a good idea to
> keep it there. (Unless Fedora 3 deliberately has
> changed things so that
> the programs now expect to find it under
> /sys/bus/usb, but I don't think
> they have. The kernel's usbfs driver still creates
> the /proc/bus/usb
> directory.)
>
> Alan Stern
>
>
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