[mythtv] Previously Recorded Screen on fixes/32 (Mythbuntu Theme)

[Roland Ernst]

On Thu, Apr 21, 2022 at 9:23 PM Klaas de Waal <klaas.de.waal at gmail.com>
wrote:

>
>
> On Thu, 21 Apr 2022 at 20:15, Stephen Worthington <
> stephen_agent at jsw.gen.nz> wrote:
>
>> On Thu, 21 Apr 2022 19:34:03 +0200, you wrote:
>>
>> >With MythTV fixes/32, the "Previously Recorded Screen" shows
>> >the `BusyPopup` (spinning clock with a 'loading' message)
>> >forever.
>> >This only happens with the Mythbuntu Theme (currently at 30.2).
>> >
>> >It happens on both display servers, Wayland (Ubuntu 21.10)
>> >and X11 (Ubuntu 22.04 dev.) and does not happen on my
>> >v31 test installation (Ubuntu 20.04).
>> >
>> >The only way I found to escape, is to kill the frontend.
>> >Out of curiosity, a mouse click on that screen works, and
>> >I can change the time period and view a detailed listing
>> >of the shows. But there is no way to leave this screen with
>> >the active BusyPopup.
>> >
>> >MythTV Version: v32.0+fixes.202204120034.bbd8355d8d
>> >
>> >I am curious if this behavior is reproducible on a MythTV
>> >system with lots of previously recorded items. My current
>> >test environment has only a few, which do not fill the page.
>> >Could you please check this?
>> >
>> >Roland
>>
>> I can not reproduce this on my Ubuntu 20.04 v32-fixes system.  I have
>> huge numbers of recordings.  I tried with a couple of news programmes
>> that are recorded daily, so they have a massive list of episodes, and
>> they displayed quite rapidly with the busy spinner disappearing
>> normally.
>>
>> MythTV Version : v32.0+fixes.202204120033.bbd8355d8d~ubuntu20.04.1
>> _______________________________________________
>>
>> I can reproduce the problem on my laptop with Fedora 35, Wayland and both
> with fixes/32 and master.
> This is with a limited number of recordings.
> With MythCenter-wide which I usually use it works OK.
>
> Klaas
>
>
Now, the question is, "is it related to recent QT versions"
or, "is it caused by the limited amount of recordings in the
'oldrecoreded' table".

AFAIK, the `LoadInBackground` implementation has a kind
of 'paging' algorithm implemented, which might be triggered
incorrectly in the second case.

If we can find a user that has many items in the
"Previously Recorded Screen" and uses a recent QT
version (>= 5.15.0), that report is of interest.

Roland
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