Wow! I have tried again and again the different ways. Sometimes it works, sometimes no...
Let's summarize:
1) Boot. Open Firefox by clicking on the icon: black screen (tried 10+ times)
2) Boot. Open Terminal. Type MOZ_ENABLE_WAYLAND=1 snap run firefox: no black screen (tried 5 times)
3) Boot. Open Terminal. Type MOZ_ENABLE_WAYLAND=0 snap run firefox: sometimes black screen, sometimes no, although I try to do exactly the same steps... (tried 10+ times)
4) Boot. Open Terminal. Type snap run firefox: sometimes black screen, sometimes no, although I try to do exactly the same steps... (tried 10+ times)
Wow! I have tried again and again the different ways. Sometimes it works, sometimes no...
Let's summarize: WAYLAND= 1 snap run firefox: no black screen (tried 5 times) WAYLAND= 0 snap run firefox: sometimes black screen, sometimes no, although I try to do exactly the same steps... (tried 10+ times)
1) Boot. Open Firefox by clicking on the icon: black screen (tried 10+ times)
2) Boot. Open Terminal. Type MOZ_ENABLE_
3) Boot. Open Terminal. Type MOZ_ENABLE_
4) Boot. Open Terminal. Type snap run firefox: sometimes black screen, sometimes no, although I try to do exactly the same steps... (tried 10+ times)
Amazing.
How can I help?