https://bugs.freedesktop.org/show_bug.cgi?id=91534
--- Comment #1 from Emil Velikov emil.l.velikov@gmail.com --- Hi Aaron,
We do have some fixes in mesa 10.6.x that never made it into 10.5 series. I would give mesa 10.6.x a spin first.
I'm not a r300 dev myself so I cannot comment on the driver, although it doesn't show any signs of issues. Here are some bits you might find interesting:
- Seemingly the driver already exposes NPOT + OpenGL 2.1 (albeit some hardware limitations, which should be handled by the driver).
- GLX does not always mean you'll get OpenGL, similar to EGL and OpenGLES. One can mix and match depending on various factors.
In your case EGL + OpenGL is attempted but I'm not sure how to force gles. Older versions had kwin_gles, which seems to be gone with the 5 series. Might want to look into a way of forcing gles, and getting more verbose output on kwin side.