Hello,
I seem to have a similar problem as mentioned in this post. Sadly there is no solution given.
I use Ubuntu 22.04 LTS Mate and changed from the default firefox snap to the esr/stable channel. The Ubuntu installation is “fresh” (no upgrade from previous), but has a few other things installed.
With firefox esr I get the following error whenever I try to open a new window via the firefox icon or command line and a firefox window is already open:
Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile.
The open window reacts normally, no problems there. I can drag a tab out to create a new window just fine. This happens on different user-accounts (probably all).
With the default version (latest/stable) a second window would open (like expected) - so it may have to to with differences in the esr version.
Is there anything I need to change in order to fix the problem? I would prefer to continue to use the ESR version as I configure ff via the policies file for multiple users, including options that are only available on ESR.
Additional info:
Session-Type: X11
firefox-snap-version: 115.2.1esr-1 (3130)
Output of env | egrep -i "session|moz":
SESSION_MANAGER=local/:@/tmp/.ICE-unix/2374,unix/:/tmp/.ICE-unix/2374 XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
DESKTOP_SESSION=mate
MATE_DESKTOP_SESSION_ID=this-is-deprecated
XDG_SESSION_DESKTOP=mate
XDG_SESSION_TYPE=x11
XDG_SESSION_CLASS=user
XDG_SESSION_ID=c2
GDMSESSION=mate
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
Whenever I start firefox esr via commandline I get this info - then firefox starts normally (first window) or gives the mentioned error:
Gtk-Message: 13:24:06.805: Failed to load module “appmenu-gtk-module”
Gtk-Message: 13:24:06.805: Not loading module “atk-bridge”: The functionality is provided by GTK natively. Please try to not load it.
I have not tested if I get the same info on the regular firefox version.