For starters I'd -
open home folder (view > show hidden files)
in .config delete both the smplayer and vlc folders
in .cache delete the vlc folder
in .local/share delete the vlc folder
For smplayer try one of the below, the first affects smplayer opened from applications menu and r. click, the 2nd all possible uses of smplayer
Code:
gksudo gedit /usr/share/applications/smplayer.desktop
Find the Exec=smplayer %U line, make it look like this
Code:
Exec=env XLIB_SKIP_ARGB_VISUALS=1 smplayer %U
Or - in terminal
Code:
sudo bash -c "cat > /usr/bin/smplayer.helper" <<EOF
export XLIB_SKIP_ARGB_VISUALS=1
exec smplayer.real "\$@"
EOF
then
Code:
sudo chmod 755 /usr/bin/smplayer.helper
Code:
sudo mv /usr/bin/smplayer{,.real} && \
sudo ln -sf smplayer.helper /usr/bin/smplayer
If doing the latter and it helps - if smplayer is ever updated then just run the last code box again
After deleting those folders start vlc from the terminal and see what it says
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