https://bugs.freedesktop.org/show_bug.cgi?id=30313
--- Comment #27 from Tomasz Czapiewski xeros@irc.pl 2010-10-12 16:00:40 PDT --- (In reply to comment #26)
Thomasz,
your issue seems to be similar to bug 28800. I guess Nexuiz uses some auxiliary textures to compute lighting.
My problem has been fixed after I've upgraded from yesterday's (11 October 2010) xorg-edgers/radeon ppa packages for Ubuntu 10.10 Maverick.