On Fri, 3 Jul 2009 15:45:07 -0400 (EDT)
Alan Stern <stern@rowland.harvard.edu> wrote:

quoted text
> On Fri, 3 Jul 2009, Pierre Ossman wrote:
>=20
> > I'm still hoping for a workaround though. Is there any way I can force
> > the bus to power down and up again to simulate removal and reinsertion?
>=20
> Not on normal desktop and laptop PCs; the USB hardware doesn't provide
> power control.  However some hubs (not all!) do allow port power
> control.  See
>=20
> 	http://www.gniibe.org/ac-power-by-usb/ac-power-control.html
>=20

Nice. None of the built-in hubs supported this though, and this
particular "feature" got me extra disappointed:

    No overcurrent protection

And here I thought everything on a modern motherboard hade overcurrent
protection. :/

Luckily both two hubs I had lying around supported power switching
though (confirmed it using a optical mouse).

Now for the fun part. Once I put an extra hub between the host and the
IR device, it started working nicely on boot. So no power hack
needed. :)

Rgds
--=20
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  rdesktop, core developer          http://www.rdesktop.org
  TigerVNC, core developer          http://www.tigervnc.org

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