Comment 89 for bug 1951491

I'm using VNC to access a desktop and experiencing just this issue. Using the "export DBUS_SESSION_BUS_ADDRESS" allows me to get a firefox window. I can't open file load/save dialogs from that session though, so can't import/export certificates & websites with file upload pages that use the standard file-picker dialog don't work.

To be fair though I'm fed up of being told that it's my configuration that must be wrong & I should be applying one of many random environment variable settings that I may find on the internet. If firefox works in, say, an xfce session by default & everything works, but it doesn't work in a similar session over VNC then something in the distro configuration is broken - simple as.

I've better things to do than try to apply workarounds to fix broken systems, so I'll use a distro that works. It seems that the team at Ubuntu is simply not ready to fully support the myriad ways of using desktop linux.