At Fri, 21 Sep 2012 14:43:19 +0200, Julien Danjou wrote:
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.
Well, it means that the noise disappears when the speaker pin is disabled. It's logical.
But my question was: if you plug to an external mic jack and leave the headphone jack, the speaker noise is still there, right?
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.
Turning EAPD on/off on node 0x14 makes difference?
Takashi