usb power output issues

[Hans Petter Selasky]

On Wednesday 06 June 2012 18:05:56 Mark Felder wrote:
> On Wed, 06 Jun 2012 10:58:32 -0500, Hans Petter Selasky <hselasky at c2i.net>
> 
> wrote:
> > Hi,
> > 
> > Can you try pressing CTRL+ALT+F1, then CTRL+ALT+F9. Sometimes I see
> > something
> > similar, and switching back and forth between the console helps.
> 
> The keyboard goes *completely* dead, so even switching VTs like that isn't
> possible.
> 
> I worked around the issue by plugging in a powered USB hub. So currently
> if I plug in my keyboard directly, it won't work.
> 
> > You can try to get dmesg, and also run:
> > 
> > usbconfig dump_device_desc dump_curr_config_desc
> > 
> > If your device times out on the command above, something is wrong in
> > USB. Else
> > it is a problem in the interaction with X11.
> 
> It doesn't appear to time out when I collect that info, and it can't be an
> X11 issue because I can kill X11 completely and the problem persists.
> 
> > FYI: CAPS-LOCK-LED and NUM-LOCK-LED are software controlled by the USB
> > stack.
> 
> I suspected as much.
> 
> 
> See attached.

Attachments look OK.

Are any other USB devices being used at the time this failure happens?

--HPS