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

[Michael Shiloh]

Very interesting. Thanks Yuval.

On Fri, Nov 24, 2017 at 8:06 PM, Yuval Adam <_ at yuv.al> wrote:

> This might help:
>
> http://linrunner.de/en/tlp/docs/tlp-configuration.html#usb
>
> On 11/24/2017 05:51 PM, Michael Shiloh wrote:
> > Very interesting. After removing TLP the problem seems to have gone
> > away. I am now able to enjoy USB peripherals again. Thanks!
> >
> > I'd love to understand why, though.
> >
> > On Fri, Nov 24, 2017 at 11:45 AM, Michael Shiloh
> > <michaelshiloh1010 at gmail.com <mailto:michaelshiloh1010 at gmail.com>>
> wrote:
> >
> >     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 <mailto: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
> >         <mailto: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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