Condition: Radeon HD 5450 on Ubuntu with fglrx driver 13.4 (latest non-beta).
Result: Any object with a GLSL shader is not displaying, and the system and/or game may also freeze if the window loses focus.
The only related warning given is: “Invalid GL_SHADING_LANGUAGE_VERSION format.” I looked in the source where this warning is originating and it appears “GLP(GetString)(GL_SHADING_LANGUAGE_VERSION)” is not returning anything.
Using the open source radeon driver there is no such problem. Also no problem running on an NVIDIA card using open source or proprietary drivers. Any ideas how to proceed with fixing this? Any more info I can provide?