Comment 1 for bug 1951033

Expanding on (5): we've had problems in the past with glibc and graphical snaps on core due to the way the host's userspace drivers are mapped into the snap environment, and so are loaded with the snap's glibc. We should check that <a graphical snap> runs successfully with the core20 built from focal-proposed, on mesa-supported hardware, an NVIDIA system, (and maybe an AMD system with the proprietary stack installed? I don't know how supported we claim that is). We *might* want to test running <a graphical snap> using the focal-proposed core20 on all supported drivers and all supported releases (so, 18.04, 20.04, 21.10).