As you may have read in a previous post, I've had some trouble getting Xorg set up on the new mythbox. I first tried getting the radeon driver to work, but it was segfaulting on startup, so I switched to the closed ATI driver (fglrx). That one caused my screen to go blank and become totally unresponsive to keyboard or mouse. Nice. So, I went back to the open source radeon driver (and its radeonhd variant). I eventually got a functional KDE session working, but for some reason MythTV segfaulted whenever I tried to start it. I eventually discovered that MythTV would run, but only if the Xorg GLX module was not loaded (i.e., no hardware-accelerated graphics). I was hoping this wouldn't be a big problem, but the video playback in mythtv was horribly jerky due to many dropped frames.
So, I went back to fglrx, and eventually muscled my way toward a working X session. The only remaining issues are that (1) glxgears reports a higher FPS when GLX is not loaded than when it is (which is pretty bizarre), and (2) I still get the blank-screen catatonia if I stop the Xorg process. I can live with that; under normal circumstances, there's no reason to stop it.
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