CD audio and DVD makes crackling noise...

[MustangSVT]

so loud that you cant listen to it. however other audio plays fine on the computer.
I have ECS K7s5a mobo, i have been using built in soundcard until recently. it was working fine, but i was not happy with its low output and the quality of output .

I upgraded to Phillips Seimic EDGE (705, the new version) and it worked fine.. until I tried to play an audio cd or play DVD on the computer.. then it would make loud crackling noise...

trying to resolve the issue.. I tried different slots and changed IRQ priority settings in bios (newest bios).. and it did go between irq 11 and irq 12 but im having same issues.. (also using latest soundcard driver).
I am using win XP.

from my experience.. before it was due to somekind of conflict between soundcard and the video card... before.. i had made my friend's computer and he wanted to use his old PCI video card.. we found out that it was having (same) cd audio & dvd crackling issues... after trying many different things.. we bought a new AGP video card and it worked fine...

now the problem is.. I already am using an AGP (Geforce3 Ti200) video card...

is there way to change the IRQ of the video card? any ideas on solving thsi problem? thanx.

 

[Peter]

Wrong tree. There is no such thing as an IRQ conflict between PCI and AGP cards. Read the Anandtech FAQ on the topic.

What you experience there is lack of bus bandwidth, possibly on the PCI bus. What happens is that other PCI clients hog the system bus (or the CPU) for too long so that realtime streams get thrown off timing - this is the crackling you hear.

First of all examine whether your IDE drives run in their best UDMA modes, and then have a close look at whether you have any other slow PCI cards (or non-slow PCI cards with poorly written drivers) in there.

regards, Peter

 

[MustangSVT]

thanx pete. DVD drives were set as PIO mode.. after i enabled DMA if available (no need to reboot since xp) it seems to work fine now..
thanx!