Public bug reported:
Early starts of firefox on gnome on wayland on Ubuntu 20.04.4 are
unusable. Early meaning directly after session start from gdm.
If I put firefox.desktop into ~/.config/autostart/, firefox will start
as expected, successfully load my homepage (as evidenced in server
logs), but fail to display windows decoration or contents or react on
input. The space occupied by the window will be either black, matching
last shown pixels in the place (background, other windows) or alternate
between such with varying flicker frequency.
For avoidance of ambiguity, the mode affected by the bug is
windowProtocol=xwayland (as in about:support)
The bug can be worked around, either method is sufficient on its own:
a) forcing windowProtocol=wayland through environment MOZ_ENABLE_WAYLAND=1
b) starting firefox later, through a prepended sleep 10 call
Mostly for documenting the workarounds, I understand that this might not
be worth fixing as firefox snap approaches similar quality, see also
#1970884
** Affects: firefox (Ubuntu)
Importance: Undecided
Status: New
** Tags: wayland
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https://bugs.launchpad.net/bugs/1975545
Title:
firefox on xwayland unusable after gnome autostart
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