[mythtv] QT Slots Corruption Issue on Shield Tube

[David Engel]

On Wed, Mar 09, 2022 at 05:42:42PM -0500, Peter Bennett wrote:
> 
> On 3/9/22 15:32, Piotr Oniszczuk wrote:
> > > Does anybody have any ideas how to proceed? I cannot recreate it myself as I do not have a Shield Tube. Also I do not understand how QT internal address lists could get corrupted.
> > Peter,
> > 
> > I see 2 strategies:
> > 
> > 1. finding root cause then modify myth code to workaround issue(*)
> > 2. workarround root cause
> > 
> > So imho:
> > 1.
> > - rather difficult to find root cause (especially as issue it is in Qt code - not in Myth code. For me: waste of time)
> > - we will end with dedicated myth packages for Shield Tube
> > +no need to mangle with Shield Tube OS (Qt runtime)
> > 
> > 2.
> > +easy to find solution (**)
> > +Shield will use generic (non-speciffic) myth package
> > -need to install also Qt component on Shield Tube
> > 
> > (*) - i assume root cause is not myth code but rather in particular build of Qt
> > 
> > (**) - just build locally the same Qt ver and start to apply kde Qt patches (https://community.kde.org/Qt5PatchCollection).
> > It is highly probable Qt bug has fix there....
> > After that you can identify single Qt binary component needed to be replaced on target (Shield Tube).
> > I don't know is Android installer able to replace component in android system dir.
> > If not - then maybe playing with LD_PRELOAD will help?
> > 
> > If this will not help (KDE patches are not fixing issue) - you may try compile 5.15.3 as t has 200+ bug fixes over 5.15.2.
> > But this probably this will require full Qt binaries replacement on Shield....
> > 
> > br
> > 
> > _______________________________________________
> 
> Thanks for the suggestions. We build qt ourselves and add it to the package
> because android does not include qt packages. So adding patches is easy. One
> problem is I do not have the shield tube system and it only happens there,
> and only one user reported it. I can build patched versions and send it to
> them for testing, if it is indeed a qt bug. It could also be something in
> MythTV or other package overwriting the storage.

Isn't the shield tube 32-bits?  If so, can you try the 32-bit version
of mythfrontend on your regular Shield?

David
-- 
David Engel
david at istwok.net