Comment # 15 on bug 70706 from Stefan Brüns

openSUSE ships a xorg config file in the glamor package:
$> cat /etc/X11/xorg.conf.d/05-glamor.conf
Section "Module"
        Load  "dri2"
        Load  "glamoregl"
EndSection
---

I think this was a workaround to get correct GL symbol tables. As the GL loader
has changed with xserver 1.15 this is probably no longer needed.

Commenting out (#) the two Load commands fixed this for me.