I'm going to revive this thread, for which I apologize. My TDM Linux installation looks exactly like those screenshots in the first post: I'm missing light cast by the torches and any movable / extinguishable light sources. My copy of Doom3 IS NOT the infamous BFG edition -- I bought it long before anyone thought of re-issuing such a classic. Furthermore, my copy of Linux Doom 3 runs all right: all of the lights and shadows are in the right places. I'm running Intel HD 4000. I've already redone the DDS textures into the TGA ones (nothing changed). I've applied the following tweaks:
seta image_usePrecompressedTextures "1"
seta image_useNormalCompression "2"
seta image_useAllFormats "1"
seta image_useCompression "0"
seta image_preload "0"
To make sure these commands take effect, I acutally have them in my start script and in the autocommands.cfg file. My Windows installation of TDM is running fine (although it uses my ATi Radeon card, not Intel's HD). Is there anything else I can do to make this experience worthwhile without rebooting to Windows? Thank you in advance.