(In reply to Michel Dänzer from comment #25)
> (In reply to Bruno Jacquet (Xaapyks) from comment #23)
> > So I'd say the issue is still there.
> 
> Maybe you have a ~/.drirc or other drirc file which gets picked up and
> disables radeonsi_zerovram? (E.g. due to ever starting the old "driconf"
> application with a driver which supported the option)

~/.drirc and /etc/drirc do not exist on my fs.
/usr/share/drirc.d only contains 00-mesa-defaults.conf which is not modified
from what the mesa build provides and is packaged in Arch.

strace seems to confirm it is not loading any other "drirc" file any and I
don't have any "*MESA*" or "*GL*" env var.