Package: xvfb Version: 2:21.1.10-1 Severity: critical Tags: ftbfs Control: affects -1 src: rhythmbox xvfb is failing to start in Debian Unstable. This is making many packages fail to build from source. See for instance https://buildd.debian.org/status/package.php?p=rhythmbox Build log excerpt: xvfb-run: error: Xvfb failed to start Thank you, Jeremy Bícha