On Wed, May 31, 2017 at 2:21 PM, Takashi Iwai tiwai@suse.de wrote:
On Wed, 31 May 2017 20:56:53 +0200, Felipe Contreras wrote:
On Wed, May 31, 2017 at 1:19 PM, Takashi Iwai tiwai@suse.de wrote:
Is there "Loopback Mixer" switch? If yes and it's on, try to turn it off. The analog loopback is often the source of the unknown noise.
Yes, "Loopback Mixing". it was off.
Other than that, try to apply the existing quirks. Some of them are applicable via model option of snd-hda-intel module.
Which quirks should I try?
Check your codec chip, and then see which model option is available.
It's a Realtek ALC3271. I don't see any model options available for this, but I checked the code and it has the same codec vendor ID as ALC269 so I tried all the model fixups I saw in alc269_fixup_models with no luck.
However, I noticed something interesting; when I enabled the "dell-headset-dock" fixup, the noises got louder, and I noticed a pattern. It seems everything else I do in the laptop results in a noise; moving the mouse, pressing a key on the keyboard, even a cursor blinking on the screen results in a distinguishable noise. After a while the noises lower in volume, as before, but the patter is still there, is just that I hadn't noticed.
Any ideas?