On Tue, 2023-05-23 at 18:11 +0200, Frank wrote: > Good afternoon, > > since the upgrade to Gnome Shell 44.1 I have to start Firefox twice. > The first time I only get a black window but can close it from the > top > menue. After that it starts normal. When starting from a terminal I > get > the following message which appears at 2nd successfull attempt as > well: > ATTENTION: default value of option mesa_glthread overridden by > environment. > > Anyone else experiencingthis and an idea how to get an error message? > > Thanks Frank Hi, I had the same issue on my workstation but not on my laptop. This weekend I found a site recommending to add "MOZ_ENABLE_WAYLAND=1" into `/etc/environment` (no link, since I cannot find the page anymore). Since I did, I do no longer need to restart Firefox. Maybe you give it a try as well. ente