[LAU] [FIXED] Re: RFV: LV2 Gtk2 UIs crashing Qt5 QTractor and MusE at same place

[Tim E. Real]

Thanks for the replies.

Today updates came down the line for 16.04
 and it works now.

openSUSE already had the fixes and it worked fine there,
 so now I was just waiting for this. 

On with the show...
T.


On Monday, May 2, 2016 12:28:28 AM EDT Tim E. Real wrote:
> Hi list. Requesting verification of a bug:
> 
> After upgrading from *buntu 14.04 LTS to 16.x, the LV2 Gtk2 UIs
>  such as Calf and others crash upon opening them in both
>  Qt5 QTractor and Qt5 MusE-3, at these similar calls:
> 
> QTractor: In qtractorLv2Plugin.cpp
> QWidget *pQtContainer = QWidget::createWindowContainer(pQtWindow,
> pQtWidget);
> 
> MusE: In lv2host.cpp:
> ewWin = QWidget::createWindowContainer(x11QtWindow);
> 
> The crash ultimately happens deep inside the Qt5 libraries at the
>  same place in both apps :
> 
> 	QXcbWindow::setParent()
> 
> I tried building Calf from source release, and tried different
>  video cards. NG.
> 
> But... If I bypass createWindowContainer() in MusE the UIs open and work
> fine! (Just that now of course they are outside of the container window.)
> 
> It's Qt 5.5.1
> I read about a bug fix and revert where they assumed always a valid screen
>  but then had to revert, but that's supposed to be fixed now.
> I'm confused.
> 
> Is it just me getting these crashes?
> 
> Thanks.
> Tim.