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Colleen Josephson wrote: |
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> I have a ASUS M4A89TB MB which is AMD's 890FX/SB850 chipset I believe, |
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> a quad-core AMD Phenom II, and an ATI FirePro V3700. |
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Ok. You could maybe try to experiment with the graphics drivers as |
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well. |
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> Related to the power supply as in this is a hardware issue? |
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Basically yes, because the hardware should never behave like it does. |
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But it can certainly be software induced, so that a changed setting |
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can make the problem go away - although probably at the cost of |
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sacrificing something else, e.g. maybe getting higher power |
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consumption. |
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> Because the hum doesn't start until almost the end of the boot |
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> process on the liveCD, and if it were the power supply's fault, |
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> wouldn't it start as soon as I booted up the system? |
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When drivers load in the system (I guess you have hardware drivers |
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built as modules, as opposed to built-in to the kernel?) they will |
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start exercising their respective hardware devices. Some device, CPU, |
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chipset, or another, is possibly switching constantly between power |
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states, which the power supply in the PC might not be able to handle |
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completely. |
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It could be something simpler as well, some signals that are simply |
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being coupled onto analog output. |
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To say any more you need to find which driver is causing this. Mike's |
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advice is the start; find out which drivers coldplugging loads, then |
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e.g. load one at a time manually. At some point you should get the |
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noise. Then dive deeper into that particular driver case. |
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//Peter |
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