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

[Yuval Adam]

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
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>         unencrypted
> 
> 
> 
> 
> 
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