[mythtv-users] How To Prevent Disabling of USB Devices When Idle
Jay Foster
jayf0ster at roadrunner.com
Sat Sep 30 22:59:18 UTC 2017
On 09/30/2017 03:51 PM, Jay Foster wrote:
> 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).
>
>
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I might have replied too soon. With some further investigation, I found
some settings under the Power tab in the BIOS. I have enabled the "USB
S4/S5 Power" setting and the "Wake on USB from S5" setting. I see if
this helps.
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