After upgrading from Ubuntu 24.04 to 24.10 (which also seems to have updated the Nvidia drivers from 550 to 560), the Firefox snap seems to be falling back to software rendering. Non-snap Firefox doesn’t seem to be impacted, so I suspect that this is snap related somehow.
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In case this is relevant, my Nvidia GPU means that the Ubuntu upgrade also included switching from X11 to Wayland
On closer examination, I see
libEGL warning: egl: failed to create dri2 screen
In the logs, which seems probably related.