https://bugs.freedesktop.org/show_bug.cgi?id=100239
--- Comment #26 from Bruno Jacquet (Xaapyks) maxijac@free.fr --- (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.