Comment # 4 on bug 92039 from mikolaj.chadzynski@mobica.com

I've tried mesa 10.4.4 with the same result (yes this is PPC). And I haven't
tried higher version since it needs Xserver update.
Anyway it displays visuals correctly for mesa 9.2.5.
So it's communication between radeonsi_dri.so and xserver which is broken (even
xdpyinfo shows only 3 X visuals).