I can confirm this bug on my system as well. Upgraded from 18.04LTS to 20.04LTS. I have the same lsb_release -d and apt-cache policy gvfs output as well.
I worked around this issue by creating a symlink in /usr/lib/x86_64 -linux-gnu from libusbmuxd.so.6.0.0 to libusbmuxd.so.4 I don't know if this breaks anything, but this does seem to alleviate the slow launch of certain Gnome apps that seem to rely on gvfs, along with my slow login time that I was experiencing. Nautilus, gedit, file dialogs, screenshot, etc., that took ~20-30 seconds to load now load instantly, and I do not get org.gtk.vfs.AfcVolumeMonitor timeout errors I was seeing either. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1877135 Title: Failed to start Virtual filesystem service - Apple File Conduit monitor [libusbmuxd.so.4 not found] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gvfs/+bug/1877135/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs