USB locks up system -- WAS Re: shutdown or acpi problem

[Steve Kargl]

On Sun, Nov 16, 2014 at 06:55:53PM +0000, Mark R V Murray wrote:
> 
> > On 16 Nov 2014, at 18:51, Steve Kargl <sgk at troutmask.apl.washington.edu> wrote:
> > 
> > If you have not read the entire thread, once the laptop keyboard and
> > video output lock up, I can ssh into the laptop.  If I run usbconfig,
> > it hangs, ^T tells me it is stuck in SX Lock, and the /dev/da0* devices
> > have not been destroyed.
> 
> Weirder and weirder :-(.
> 
> Something with SX locks? Hmm. I do use those for attach and detach for
> RNG sources. Could it be that that stick of yours is somehow getting
> involved in the RNG source locks?
> 

It's not limited to a single usb device.  Plugging in/Unplugging
a logitech mouse dongle, the memstick, a Western Digital MY Passport
external usb hard drive, all lead to the locked keyboard and video.

I tried adding both RANDOM_DEBUG and USBDEBUG to the kernel, but the
mount of output is mind numbing.

-- 
Steve