Hi Patrick,
Thanks.
I tried your very reasonable and nice advice.
kdenlive still froze after upgrading everything,
moving configuration files, and restarting.
Here's the big but.
BUT, I think you may have correctly guessed a
problem with 3d functions.
I tried running the 3d program named "glxgears".
It froze too!
Coincidentally, both kdenlive and glxgears
a.) sometimes work for a few seconds before
freezing, and
b.) depend on the package named
"libgl1-mesa-glx", which contains OpenGL
code.
What do you think?
Thanks,
Kingsley
--
Time is the fire in which we all burn.