Using Manjaro ARM LXQT Edition 18.12.1 on the Odroid C2 (on eMMC module).
First, thanks to member ‘eunkenk’ for bringing it to notion on the Hardkernel forum.
Second, whoa, that LXQT edition is a fantastic distro for the C2. Simply installable via dd-command, runs out-of-the-box, fast with latest software. Thank you, well done!
A few issues are still present: Foremost that an additional hardware plugged onto the C2, the Odroid HiFi Shield 2, is not detected as soundcard. Checked it with #asound -l, and also with PulseAudio.
On Debian as well as Ubuntu (image provided by Hardkernel), it gets detected.