[Solved] Linux version won't install, steam play version won't run

[mediaklan]

Hi everyone ! I'm facing a strange issue trying to play Machinarium through steam linux in xubuntu bionic. In the Steam settings, if I disable the "steam play for all titles" option, I should be able to install the linux version (I think). Not working : "no OS support". Then if I enable the steam play option, the game install fine, but it's not running at all. It seems to try running for a few seconds, nothing happens and that's it.
Note that I owned this game from a humble bundle pack. So I can play with the standalone (but old) linux version, and I can play the windows version with wine just fine. But I was looking to "centralized" my games around steam... Any idea why the steam play version won't run at all ? Is there something I should try to - at least - debug ?

[mediaklan]

Unfortunately, I forgot all my games are installed on a NTFS partition, which seems related to my current issue (Machinarium isn't the only game with this problem). I will try running a game from an ext4 just to be sure, but I think that's it.