Robin Candau

> @NoahC500 use the special start for thunderbird in Wayland: https://github.com/Ximi1970/systray-x#using-the-addon-with-wayland It seems like it doesn't work with thunderbird 128+ anymore. Using `GDK_BACKEND=x11` prevents systray-x from starting. Not using `GDK_BACKEND=x11`...

@Ximi1970 Have you tried on Arch with Thunderbird 128? What you are describing works with Thunderbird 115 but not with Thunderbird 128 (which was released [2 days ago in Arch](https://gitlab.archlinux.org/archlinux/packaging/packages/thunderbird/-/commit/88afb16037bb5a3f81b86616b7c673159b858e8c)).

Well, doesn't work on my side (on Sway). Here's the output: ``` $ env GDK_BACKEND=x11 /usr/bin/thunderbird Error: Failed to open Wayland display, fallback to X11. WAYLAND_DISPLAY='wayland-1' DISPLAY=':0' [ImapModuleLoader] Using nsImapService.cpp...

Hummm, so it seems like `env GDK_BACKEND=x11 thunderbird` doesn't work anymore for me since Thunderbird 128 but `env MOZ_ENABLE_WAYLAND=0 thunderbird` does work! :thinking: So I just changed the Exec line...

From the [official Thunderbird 128 release notes](https://www.mozilla.org/en-US/firefox/128.0esr/releasenotes/) (under the "Linux" section): > Firefox now defaults to the Wayland compositor when available instead of XWayland. [...] This basically means `MOZ_ENABLE_WAYLAND=1` is...

Woops, I posted the release notes from Firefox instead of Thunderbird in my previous comment... :sweat_smile: But the point still stands though, Thunderbird 128 is effectively using Wayland by default:...

I [opened a merge request](https://github.com/Ximi1970/systray-x/pull/200) to document `env MOZ_ENABLE_WAYLAND=0 thunderbird` for Thunderbird 128+. I hope that helps :)

> > Hummm, so it seems like `env GDK_BACKEND=x11 thunderbird` doesn't work anymore for me since Thunderbird 128 but `env MOZ_ENABLE_WAYLAND=0 thunderbird` does work! 🤔 > > So I just...

@nicolamori Well, this is weird. I just installed Arch with KDE Plasma in a VM and both `env GDK_BACKEND=x11 thunderbird` and `env MOZ_ENABLE_WAYLAND=0 thunderbird` work on my side (while only...

I'll put my MR as a draft for now since it seems there are different behaviors depending on people and DE/Compositor.