I had the same issue on Kubuntu 18.04 and uninstalling libglvnd0 fixed it for me.
Note: this is a clean install from yesterday and I don't have a NVidia card in my laptop, so its all Intel.
I had the same issue on Kubuntu 18.04 and uninstalling libglvnd0 fixed it for me.
Note: this is a clean install from yesterday and I don't have a NVidia card in my laptop, so its all Intel.