I have the same problem on karmic with the radeon (opensource) driver and a Mobility Radeon X700 card.
Enabling KMS and subsequently dri2 solves the problem, i.e. the game area is visible again. However a similar message still comes up:
(gnometris:1852): ClutterGLX-CRITICAL **: Unable to make the stage window 0x3a0002d the current GLX drawable
I have the same problem on karmic with the radeon (opensource) driver and a Mobility Radeon X700 card.
Enabling KMS and subsequently dri2 solves the problem, i.e. the game area is visible again. However a similar message still comes up:
(gnometris:1852): ClutterGLX-CRITICAL **: Unable to make the stage window 0x3a0002d the current GLX drawable