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Later Nvidia drivers hogging the PCI bus?
"Tech Support" wrote in message ... I ran PCIlist and it made mention of the fact my video card may be hogging the PCI bus. I was runnign the beta 44.65 drivers and noticed in XP that on boot up the start sound would slightly stutter. I have an Audigy2. Did a bit of digging around on Google and found others with the same issue, including people using 44.03 drivers and up. Seems the fix is to isntall 43.45 and down drivers. I did this and sure enough it fixed the stuttering sound on XP boot up. This does imply to me that the more recent Nvidia drivers may well be hogging the bus and causing a problem for my Audigy2 as they are both bus mastering cards. Anybody else seen similar issues? Yes, there are potential issues with the Audigy 2 XP drivers and the Detonators you mention. You are lucky that you found a version that works well for you. I'm not sure if you're looking for an explanation as to what causing the stutters, or why, but I can share with you and any other reader what I have found, and potential workarounds. I can report this, there are some beta Audigy 2 drivers that have attempted to address this issue, among others, and I can report that I have seen some improvement by just swithcing to the beta drivers. However, better results came from BIOS optimizations and careful review of all device drivers for their timeliness. You can find them he http://www.tomshardware.fr/download.php More technically, the AGP requires a period of 255 clock cycles (clks) set in the BIOS. I can not think of a technical reason why you would set it to less. Also check that the Audigy 2 has at least a 32clk window to hold the bus. Since the Audigy 2 is a bus-mastered card, there is no conflict, in theory, between the "hoggy" AGP and it's more meager requirements. Keyword: theory. My suspicion, yet to be proven, is that the real problem lies in the DMA portion of the Audigy 2's bus-mastering. Ultimately solved only by new drivers. I suspect this only because everything else I've tried, every possible combination of components and settings, driver revisions and other people's efforts have yieled such inconsistent results. It's a sometimes on, sometimes off problem, and it seems like it's something that's specific to the affected machine, which DMA access can be, machine specific. Did I say Keyword: theory? Ensure your chipset drivers are up to date, and your BIOS is configured as above, make sure you have an advanced APIC running, make sure your DirectX is functioning perfectly, and lastly, but potentially vexing, make sure your 'audio hardware acceleration' slider is set one tick less than max. That's a whole issue in and of itself. |
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