That doesn't make sense. The AGP aperture size has NOTHING TO DO with the amount of video RAM!
People think that the AGP aperture is a "window" by which the video RAM is mmap()'ed into the address space of the CPU. What the AGP aperture actually is, is a bank-switched area which is used to transfer textures to and from the AGP device, if the AGP device runs out of texture memory. So the AGP aperture ONLY gets exercised if your textures overflow the video RAM. But running 2D applications... you wouldn't get to do that. This is why AGP 2X 4X or 8X is really irrelevant; the high speed is only obtained when you need more texture RAM than your video card has physical RAM. how often does that happen... I'm more inclined to believe it's the eye candy in FC6; Compiz is very much like the Vista Aero interface in that it's quite GPU intensive; but while Aero requires a DX9 GPU, Compiz might probably silently use MesaGL software OpenGL in the absence of hardware OpenGL, with tremendously poor performance. On 1/29/07, Michael Tinsay <[EMAIL PROTECTED]> wrote:
Doc, I had a similar problem last year, but with Ubuntu rather than FC. Booting took more than 10 mins. Launching a program takes at least a minute, but is fast when already running. I traced the problem to an apparent conflict between the Kernel and the BIOS setting for the AGP Aperture. The problem was that when the AGP Aperture is set to be higher than the allocate Video RAM for the builtin video chip (e.g. VRAM = 8KB and Aperture = 32MB), things start up slow. When the aperture is of the same value of the video ram, or lower, things are fast. I reported this to the Ubuntu bug tracker. No response yet.
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