I have the same crackling sound since I upgraded from Ubuntu Intrepid to Jaunty.
I have a Realtek ALC861 sound card which worked fine in Intrepid after some tweaking.
Now I can play sounds without problems but there is a periodic crackling noise (every 60 sec) that comes with a small cpu load (5%) caused by ath5k_pci....disabling the wireless from NetworkManager made the noise disappear.
I have the same crackling sound since I upgraded from Ubuntu Intrepid to Jaunty.
I have a Realtek ALC861 sound card which worked fine in Intrepid after some tweaking.
Now I can play sounds without problems but there is a periodic crackling noise (every 60 sec) that comes with a small cpu load (5%) caused by ath5k_pci. ...disabling the wireless from NetworkManager made the noise disappear.
Any fix?