Flat Tyre With Flatpak

Are you getting "ldconfig failed, exit status 256" when trying to run an app installed with Flatpak?

The solution is to create the file /etc/apparmor.d/bwrap with the following contents:

abi <abi/4.0>,
include <tunables/global>

profile bwrap /usr/bin/bwrap flags=(unconfined) {
  userns,

  # Site-specific additions and overrides. See local/README for details.
  include if exists <local/bwrap>
}

Then reload the module:

sudo systemctl reload apparmor

You're welcome.