UserAgent: Mozilla/5.0 (X11; CrOS x86_64 10635.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3416.0 Safari/537.36
Platform: 10635.0.0 (Official Build) dev-channel eve

Steps to reproduce the problem:
1. Use an Archlinux container
2. Configure the guest system just like in debian/stretch (use the same setup found in cros-container-guest-tools
3. All the other things work well (including Wayland)
4. sommelier, when runs with -X does not forward X properly for X11 apps

What is the expected behavior?
sommelier should also work in Archlinux because the X11 is the same version.

What went wrong?
Opening any X11 apps gives "No protocol specified...Could not connect to any X display" error. /etc/sommelierrc also gives similar errors because they invoke xdpyinfo, xrdb, etc.

However, the Wayland part does work well.

Did this work before? N/A 

Chrome version: 68.0.3416.0  Channel: n/a
OS Version: 10635.0.0
Flash Version: 29.0.0.171