On Fri, Sep 21 2012, Takashi Iwai wrote:
Hi,
I've an HDA based chipset in a new Sony Vaio Z (Ivy Bridge). As sound as the system starts and the sound module are loaded, there's a constant noise (shhhhhhht) in the speakers. The noise change a bit if I toggle the mute button, but it's still there.
This noise stops as sound as I plug something in the jack port.
Do you mean the headphone, or any jacks no matter input or output?
Anything, external speaker, headphones with or without mic. When I plug something, the noise from the speaker just stops.
I just discoveredtThere's an exception: if a jack is plugged, and if I set "Auto-Mute mode" to "disabled" in alsamixer the noise can be heared. If I set "Auto-Mute mode" back to "enabled", no more noise.
Also do you get the noise from the headphone output?
Never. It's really only the integrated speakers emitting something.
In anyway, please give alsa-info.sh output (run with --no-upload option). This will cover more wide range of information.
Attached.
Last but not least, try the latest kernel (3.6-rc6) if not tried yet :)
I think I forgot to say, I'm running Linux 3.5 indeed. I've tried 3.6-rc1 a couple of weeks ago, and it didn't help. But I'd try rc6 if it has changes that can be related. :)
Thanks for your help!