[jm2]

Hi, I've been searching these forums for a while, now this is my first post.

Anyway, using advice on these and other forums, I've bought a Chaintech AV-710, Sennheiser HD-280s, and just a couple days ago I finished building my first DIY CMoy amp, which is working quite nicely.

I am by no means a major audiophile, but I can distinguish a better sound system from the rest usually. Using the Wolfson DAC on the AV-710 with the cmoy amp/headphone combo is incredible. It is the best sound I have heard to date through headphones.

My problem is that this is only the case in Windows XP. On my Ubuntu 7.04 install, I have used the custom asound.state file to get the wolfson working, and it does output sound, however there's a moderately loud background hiss regardless of whether audio is playing or not. It's not a problem with the amp, because it works perfectly on XP.

Does anyone know how to remove the background hiss on the wolfson dac on linux?

Thanks,
JM

 

[Redo]

I noticed the hiss as well, but with my Realtek onboard audio (couldn't get the X-Fi to work).

 

[geardoc]

Mine is quiet under linux.

 

[MCC]

Try double-clicking on your volume icon and ensure your mic is muted. If that wasn't the problem, open a terminal and type "alsamixer". Scroll through and play around a little bit, if you find a volume setting that works hit escape and type "sudo alsactl store" to keep your settings for next boot. If you mess anything up and haven't stored the settings yet, "sudo alsactl restore" will put them back.

Hope that helps, I haven't had that specific problem myself but the Wolfson dac under Linux is quite temperamental.

 

[jm2]

I looked at the settings and nothing seemed to fix it. Another thing I noticed through the Wolfson is that the stereo separation seems to be gone. At first I thought it was a problem with the amp, but I tested it on a different source and the amp is fine. Both channels are mixed together with the left channel being normal volume and the right channel being extremely quiet. Does anyone else have this issue? Is there another asound.state that I can try.