On Monday 20 April 2015 07:58:15 Takashi Iwai wrote:
At Sun, 19 Apr 2015 19:26:58 +0200, Gabriele Mazzotta wrote:
Hi,
I've recently found that commit a551d91473 ("ALSA: hda - Use regmap for command verb caches, too") is somehow causing a pop noise on startup when headphones are plugged in, but I couldn't figure out the exact cause. Was this observed on other systems (mine is a Dell XPS13 9333, Realtek ALC3661)? Does anyone have any idea of what the cause might be?
Are you sure that the commit is the culprit? There are lots of other changes like the widget-based power saving.
Quite sure. I did a bisection to get it. 5e56bcea5017 ("ALSA: hda - Allow driver to add vendor-specific verbs for regmap") is OK. Also, if I revert a551d91473 in the current linux-next tree, the startup noise goes away.
In anyway, please give alsa-info.sh output.
http://www.alsa-project.org/db/?f=7d283ebf64ca750482ec5ed6174a1b860fa70631