This has been quite specific scenario but since I haven't found anywhere a single clue how to solve this I thought it's probably not a bad idea to document how I solved it.
Background
- OS: Ubuntu 18.04, deployed with Kiwi builder (rather minimalist build as the goal was to have possibly lightweight system)
- Display Manager: lightdm
- Windows Manager: Openbox
Symptom
Attempt to launch lxrandr from Openbox apps menu gives no effect. Attempt to launch lxrandr from terminal window prints:
Segmentation fault
Nothing else - no core dump, no other errors, nothing in dmesg or any system logs. xrandr itself works just fine, other visual frontends for XRandR (eg. arandr) worked fine as well. Reinstalling lxrandr did not fix the issue - even though there clearly was something missing, so one would expect that missing bit to be installed as a dependency.