[mythtv-users] Apple Bluetooth keyboard keeps going to sleep

[Greg Oliver]

On Tue, Jun 29, 2021 at 5:52 PM David Newman <dnewman at networktest.com>
wrote:

> On 6/28/21 7:02 PM, James Linder wrote:
>
> >
> >
> >> On 29 Jun 2021, at 7:08 am, David Newman <dnewman at networktest.com>
> wrote:
> >>
> >> Ever since upgrading from Ubuntu 16 LTS (and then 18 and now 20), I've
> >> been having an issue with an older Apple bluetooth keyboard where the
> >> keyboard becomes nonresponsive after somewhere between 2 and 10 minutes.
> >>
> >> I can get it working again but only if I power-cycle the keyboard or
> >> remove/reinsert the dongle, or both. I've also tried fresh akaline AA
> >> batteries in the keyboard multiple times, and replacing the dongle, but
> >> the problem follows the keyboard.
> >>
> >> The 'hcitool con' command shows the keyboard is still connected when
> >> this happens, usually in "state 1". However, the keyboard's caps lock
> >> key won't illuminate after it goes to sleep.
> >>
> >> Is there some command on the Ubuntu side that would keep the keyboard
> >> awake? It's a pain to use as is.
> >>
> >> Thanks!
> >>
> >> dn
> >>
> >>
> >> Ubuntu 20.04.2 LTS (GNU/Linux 5.4.0-77-generic x86_64)
> >>
> >> Apple magic keyboard (aluminum, early 2010s)
> >>
> >> TrendNet TBW-106UB USB 2.0 dongle)
> >
> > Using mine on a NUC (builtin bluetooth) I have no issues (On ubuntu
> 20.04 and SuSE Leap 15.2)
> > James
> >
> > PS
> > My kbd is 2010ish
>
> Thanks. On further investigation, I think this could be due to some
> issue with the Myth box, either hardware or software, and not the Apple
> keyboard.
>
> 1. A different Bluetooth keyboard, a brand-new Logitech K380, had the
> same issue of losing link soon after pairing with the Myth box.
>
> 2. The Apple keyboard paired and maintained link with an iPad Pro, even
> after being idle for more than one hour.
>
> Both tests point back to some possible issue with the Myth box.
>
> Thanks in advance for any troubleshooting clues on keeping the Bluetooth
> link alive.
>
>
You might try adding:

usbcore.autosuspend=-1

to your kernel config.



> dn
>
>
>
>
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