[mythtv-users] How To Prevent Disabling of USB Devices When Idle

[Jay Foster]

On 09/30/2017 05:47 AM, Stephen Worthington wrote:
> On Fri, 29 Sep 2017 14:42:26 -0700, you wrote:
>
>> I have an Intel NUC 7I5BNH as a frontend.  I use an IO Gear wireless
>> keyboard/mouse with it.  The interface to the frontend is a USB dongle.
>> When the frontend is idle for enough time, the screen saver kicks in.
>> Usually, pressing a key or moving the mouse (trackball) will wake up the
>> frontend.  However, if more time passes by, the frontend kernel goes to
>> sleep too, and no amount of key pressing or mouse moving will wake it
>> up.  I suspect that the kernel is disabling the USB keyboard/mouse
>> wireless dongle.  Is there some way to prevent this?
>> Ubuntu 14.04.
>> Jay
> Have you checked your BIOS settings?  The wakeup sources are often
> configured there.
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Looking at the BIOS settings for the USB, nothing pops out at me.  There 
is an "USB Legacy" option (enabled) and a Portable Device Charging Mode 
option (Charging in S3/S4/S5).  Other choices are "Off" and "Charging 
Only".  Other than that, only an Enable/Disable for each USB port (all 
enabled).