[mythtv-users] Digital audio Capability grayed out

Sat Aug 13 13:09:13 UTC 2022

On Sat, 13 Aug 2022 at 13:55, James Abernathy <jfabernathy at gmail.com> wrote:

>
>
> On Sat, Aug 13, 2022 at 6:45 AM Klaas de Waal <klaas.de.waal at gmail.com>
> wrote:
>
>>
>>
>> On Sat, 13 Aug 2022 at 12:27, James Abernathy <jfabernathy at gmail.com>
>> wrote:
>>
>>> Found it. The problem started with
>>> commit: cd109ec6c08f578e1b0965e4726e6046d75af8e8 from Apr 9 22:57:38
>>>
>>> Here's the detailed lab report I did to document my testing. Things were
>>> getting blurred until I did this. The testing problem was that if you have
>>> a working 5.1 setup and change to a commit where it fails, you may not know
>>> it until you change your audio device.
>>> ------------------
>>> All this testing was on a Asrock NUC 1165G7 Core i7 1165G7. Connected to
>>> Denon AVR via HDMI and AVR connected to Samsung UHD 4K TV. The PC is
>>> running EndeavourOS which is really Archlinux but easier to install. So
>>> Mythtv combo FE/BE was built from source originally via AUR. However, when
>>> this testing started I followed the normal Build from source wiki page:
>>> https://www.mythtv.org/wiki/Build_from_Source.
>>>
>>> The NUC was not rebooted during this testing. So the backend should not
>>> have restarted. So in theory only the frontend should have changed. I
>>> checked the Status page each test and it did agree with the commit I was on.
>>> -----------------
>>>
>>> Went back to fixes/32 latest and built it for sanity and 5.1 fails and
>>> Digital Audio Capabilities is grayed out.
>>>
>>> Now going back to Jun 30 ced41a5f8f5a53c685755cde67fbe16206c9aa55
>>> 5.1 does not work, the same as the latest.
>>>
>>> Going back to 1eacadd5f413197746cb61ea036c522c65f95936
>>> again from Apr 9th. 22:49:25
>>> Dolby Digital 5.1 is working again.
>>>
>>> Now going to ced41a5f8f5a53c685755cde67fbe16206c9aa55
>>> from Jun 30
>>> At first it's working but if you change the audio device to something
>>> else like alsa and uncheck the Digital Audio Capabilities, they go gray and
>>> then when you change to the right HDMI, there are no Digital Capabilities.
>>> Definitely some memory kept somewhere.
>>>
>>> Going to try 1eacadd5f413197746cb61ea036c522c65f95936 again from April
>>> 9th  22:49:25
>>> As soon as you start mythfrontend, go to settings you see the right
>>> audio device and you can set Digital Audio Capabilities.  You can set 5.1
>>> and it works. You can also change to ALSA default that doesn't really work
>>> and the Capabilities are not grayed out.
>>>
>>> Next ec4558f3e1bbc021d771276a288039924f181a8b from Apr 20th
>>> at first it looks okay, but when you change to Alsa Default and uncheck
>>> the 4 Digital Audio Capabilities, change to stereo and save you can not got
>>> back to the correct HDMI device and all the Digital Audio Capabilities are
>>> grayed out.
>>>
>>> Changed to cd109ec6c08f578e1b0965e4726e6046d75af8e8 from Apr 9 22:57:38
>>> Does not work. Digital Audio Capabilities grayed out.
>>>
>>> Change back to 1eacadd5f413197746cb61ea036c522c65f95936 from Apr 9
>>> 22:49:25
>>> Everything working fine, related to Dolby Digital 5.1!
>>>
>>> Jim A.
>>>
>>> _______________________________________________
>>> mythtv-users mailing list
>>> mythtv-users at mythtv.org
>>> http://lists.mythtv.org/mailman/listinfo/mythtv-users
>>> http://wiki.mythtv.org/Mailing_List_etiquette
>>> MythTV Forums: https://forum.mythtv.org
>>
>>
>> Thanks for doing the bisecting and identifying the commit. I will have a
>> look at it. It could be that I ask you to test something once I have a
>> potential fix. It could also be that it is beyond my paygrade but then I
>> will make a  ticket.
>>
>> Klaas.
>>
>>
> I have a workaround for this at least for me.  Most of my viewing is via a
> FIreTV 4K Max with either Leanfront or Mythfrontend.
>
> My backend is on the latest fixes/32. So I built the mythfrontend android
> for arm v32.0-18-g1eacadd5f4 and set up my Audio settings for Dolby
> Digital 5.1 and created a Unique identifier for the frontend. Then I could
> install v32.0-59gcf553e438c on the FireTV Max and put in the Unique
> identifier as before and it brought back my settings. so now Dolby Digital
> 5.1 works on mythfrontend with the latest commit.
>
> That tells me the audio section will work on the latest if the settings
> are already there. So it's not so much an audio problem as a Setup -> Audio
> menu problem that is mistakenly identifying that the HDMI is not 5.1
>
> Jim A
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> mythtv-users at mythtv.org
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> http://wiki.mythtv.org/Mailing_List_etiquette
> MythTV Forums: https://forum.mythtv.org

I have done an analysis of the source code and added my findings as a
comment to commit cd109ec6c08f578e1b0965e4726e6046d75af8e8.
The bottom line is that I think the commit should be reverted.

Can you please try this by using the latest fixes/32 and reverting only
this commit like this:
git revert cd109ec6c08f578e1b0965e4726e6046d75af8e8
and build and try again.

Thanks,
Klaas.
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