resetting USB after suspend

[Hans Petter Selasky]

On Friday 26 March 2010 19:34:42 Nicholas 0 wrote:
> Dear list.
> 
> I'm not sure if this belongs here or on the ACPI list. Please forgive.
> 
> Sometimes when I resume my ThinkPad X200 (Core 2 Duo, 8.0-RELEASE,
> amd64), my USB ports don't come back online - that is, no power to
> things that I plug in and nothing shows up in dmesg. Reboot fixes it.
> It doesn't seem entirely consistent, sometimes USB is fine after
> suspend, sometimes it isn't.
> 
> I'm trying to see if I can find some rhyme or reason as to when this
> occcurs so I can file a bug report and work with someone to get this
> fixed, but in the mean time is there any way to reset the USB
> subsystem/reload the drivers that I can try as a work around? It's
> annoying having to reboot to charge my phone.
> 
> Nicholas
> 

Hi,

This use-case has not been tested that much. USB can probably do more to 
recover the state after PC resume.

--HPS