After waking from suspend, USB devices are not recognized (Ubuntu 17.10)

[Michael Shiloh]

Not powertop, but yes tlp. Very interesting. I will uninstall and see if
that solves the problem.

Another observation I just made: If I suspend the laptop with USB devices
plugged in, they are still detected when I restart.

I guess I could work around by leaving some small USB device plugged in
(one of those wireless mouse things) but obviously that's a real hack.
Still, the observation may be a hint as to what's going on or what I might
look at next.

I will disable TLP and report back.

Michael

On Fri, Nov 24, 2017 at 2:38 AM, Efraim Flashner <efraim at flashner.co.il>
wrote:

> On Thu, Nov 23, 2017 at 06:15:03PM +0400, Michael Shiloh wrote:
> > Hi,
> >
> > I noticed that my old mouse didn't work all the time, and figured it was
> > time to replace the mouse. Then I had trouble programming some Arduinos,
> > and figured I had a bad Arduino. It wasn't until my system failed to see
> a
> > thumb drive that I finally realized the common element here: After waking
> > from suspend, no devices plugged in to the USB ports are recognized.
> >
>
> Do you run powertop or tlp on your laptop? Sometimes those can cause
> issues with the USB ports.
>
> --
> Efraim Flashner   <efraim at flashner.co.il>   אפרים פלשנר
> GPG key = A28B F40C 3E55 1372 662D  14F7 41AA E7DC CA3D 8351
> Confidentiality cannot be guaranteed on emails sent or received unencrypted
>
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