$ snap info firefox > channels: > latest/stable: 92.0-3 2021-09-09 (595) 159MB - > latest/candidate: 92.0.1-1 2021-09-23 (625) 159MB - > latest/beta: 93.0b9-1 2021-09-24 (628) 155MB - > latest/edge: ↑ > esr/stable: 78.14.0esr-1 2021-09-07 (591) 148MB - > esr/candidate: 91.1.0esr-1 2021-09-10 (603) 158MB - > esr/beta: ↑ > esr/edge: ↑
$ sudo snap remove firefox --purge; sudo snap install firefox --channel=esr/stable; snap run firefox https://webglsamples.org/aquarium/aquarium.html > firefox (esr/stable) 78.14.0esr-1 from Mozilla✓ installed
works Edit: because it uses the official Mozilla config (GLX/Xwayland)
$ sudo snap remove firefox; sudo snap install firefox --channel=esr/candidate; snap run firefox https://webglsamples.org/aquarium/aquarium.html > firefox (esr/candidate) 91.1.0esr-1 from Mozilla✓ installed
broken
$ sudo snap remove firefox; sudo snap install firefox --channel=latest/candidate; snap run firefox https://webglsamples.org/aquarium/aquarium.html > firefox (candidate) 92.0.1-1 from Mozilla✓ installed
$ sudo snap remove firefox; sudo snap install firefox --channel=latest/beta; snap run firefox https://webglsamples.org/aquarium/aquarium.html > firefox (beta) 93.0b9-1 from Mozilla✓ installed
$ snap info firefox
> channels:
> latest/stable: 92.0-3 2021-09-09 (595) 159MB -
> latest/candidate: 92.0.1-1 2021-09-23 (625) 159MB -
> latest/beta: 93.0b9-1 2021-09-24 (628) 155MB -
> latest/edge: ↑
> esr/stable: 78.14.0esr-1 2021-09-07 (591) 148MB -
> esr/candidate: 91.1.0esr-1 2021-09-10 (603) 158MB -
> esr/beta: ↑
> esr/edge: ↑
$ sudo snap remove firefox --purge; sudo snap install firefox --channel= esr/stable; snap run firefox https:/ /webglsamples. org/aquarium/ aquarium. html
> firefox (esr/stable) 78.14.0esr-1 from Mozilla✓ installed
works
Edit: because it uses the official Mozilla config (GLX/Xwayland)
$ sudo snap remove firefox; sudo snap install firefox --channel= esr/candidate; snap run firefox https:/ /webglsamples. org/aquarium/ aquarium. html
> firefox (esr/candidate) 91.1.0esr-1 from Mozilla✓ installed
broken
$ sudo snap remove firefox; sudo snap install firefox --channel= latest/ candidate; snap run firefox https:/ /webglsamples. org/aquarium/ aquarium. html
> firefox (candidate) 92.0.1-1 from Mozilla✓ installed
broken
$ sudo snap remove firefox; sudo snap install firefox --channel= latest/ beta; snap run firefox https:/ /webglsamples. org/aquarium/ aquarium. html
> firefox (beta) 93.0b9-1 from Mozilla✓ installed
broken