And now, the sequel to the "Disappearing Now Line" thread as well as the one I posted some time ago about "audio crackling when moving mouse."
In the case of the Now line, as the OP and I had the same graphics card and I never experienced the same problem, I figured it probably wasn't the graphics card. CakeAlexS opined it was the driver. Robert Bone researched the card and found out a new driver was released last April, which I wasn't aware of until he mentioned it.
Tonight the audio crackling problem, which tended to be intermittent, was out of control and it was driving me nuts. Then I remembered about the new driver, but the AMD web site underplayed the update:
"AMD has received feedback that some users are unable to install the Catalyst 14.4 driver on some motherboards with AMD chipsets. We have investigated the issue and have determined that it was caused by the AHCI driver component that was included with the driver package.We have therefore removed the AHCI driver component from the driver package and will be providing it as a separate download. If you were affected by this issue, we recommend you download and install this updated version of the driver." Well I was able to install the 14.4 driver to my Intel motherboard, and I'm not using an AMD chipset, so OBVIOUSLY this wouldn't apply to me...right?
Of course it wouldn't! Why waste the time de-installing, downloading, and re-installing?
But then I kept thinking about some of the wisdom that was disseminated in the Now Line "bug" thread, and even though the OP didn't pursue it, I figured hey, there are smart people on this forum, I should listen...
So I installed the new driver that supposedly has no relevance to my Intel motherboard and non-AMD processors...
And the crackling is gone. Zip. Zero. Nada.
Lesson learned.