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Firefox (finally) enables Wayland by default on their builds
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this post was submitted on 13 Nov 2023
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And one of the first points is how Wayland crash will bring down all running applications - yep, just like on X11! But it's somehow Wayland's fault.
Besides the fact that on Wayland running apps can survive a compositor crash (I think new KDE will have that feature), which I doubt can be done on X11.
And I had exactly zero crashes of Wayland in my life, on any device.
An X session depends on the main user process. Unless a DE picks the compositor as the main process then no, a compositor crash won't affect the session. But they don't do that, for obvious reasons, since the compositor is just a feature among others. They typically have a special program that takes that role, for example
xfce4-session.They said that a Wayland window manager will bring down all apps, not a Wayland crash. Which, again, is not like it works on X, as I explained above. The window manager on X, like the compositor, is just another feature. If it crashes it just gets replaced and the session continues.
This is not what they are saying.
This does not happen on Xorg. If the WM crashes, it's possible to kill it and restart it without exiting running applications.
A WM crash does not bring down all the other applications... but an X11 server crash definitely does!
In wayland they are the same program (a.k.a. the compositor). User applications can be designed to survive a compositor crash, though many are not able yet