When connecting to lxplus via:
If the ROOT installation on the lxplus node is used, when trying to open a window with ROOT graphics from Python:
no graphics are shown. The graphics do show if the ROOT installation on CVMFS (LCG 98) is used instead. When checking their versions with root --version, both the ROOT installation on the lxplus node and the one in LCG 98 report to be 6.22.00.
Mentioning Mattias Ellert as the ROOT package manager for EPEL.