For our open source program we create self-contained .tar.gz archives for users 
to download. Currently we use Qt5.15.2 for those archives. After packaging I 
run a sanity check on my Ubuntu 20.04 fully patched system and the program will 
launch just fine. It is a GUI based program. Last week 2 users reported that 
when the launch the program on their Ubuntu 20.04 systems they get an error 
when one of our Plugins loads (we use Qt's plugin infrastructure to load) that 
basically says the plugin cannot load because Qt5OpenGL.so could not be loaded. 
That library is in the proper location (alongside all of the other libraries in 
the install). I'm not a linux guy and Googling didn't really turn anything up 
that was helpful. We dropped back to an older version of our program where I 
built against Qt5.9 and those binaries worked just fine. I'm looking for advice 
on what might be the issue? OpenGL drivers (The user's machine was using a Mesa 
install running on an Intel HDXXXX hardware). I think we actually build on 
Ubuntu 18.04 but we build against the Qt5.15 binaries from Qt.io instead of 
system installed Qt binaries. Maybe that is the issue? Advice is appreciated.

If you want to give the binaries a go they are at: 
http://dream3d.bluequartz.net/binaries/cmu_2022

Thank You.
--
Mike Jackson 


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