[pulseaudio-discuss] [ALC668]: Asus N751JK - surround 21 and surround40 pulseaudio bug
Raymond Yau
superquad.vortex2 at gmail.com
Sat Jul 25 19:17:50 PDT 2015
>
> Alsa-info patched kernel:
http://www.alsa-project.org/db/?f=cd23a3f0bb72e38d73224620e3e8ab57a73aa441
>
> Chmap results:
>
> Type = FIXED, Channels = 2
> FL FR
> Type = FIXED, Channels = 4
> FL FR NA LFE
>
> When unplugging the subwoofer, then chmap gives this and stays like this.
>
> Cannot open PCM stream hw:1 for PLAYBACK
>
> [Pavucontrol] -> [Configuration] -> [Built-in Audio] gives
>
> Analog Stereo Duplex
> Analog Stereo Output
> Analog Surround 2.1 Output + Analog Stereo Input
> Analog Surround 2.1 Output
> Analog Surround 4.0 Output + Analog Stereo Input
> Analog Surround 4.0 Output
> Analog Stereo Input
> Off
Seem pulseaudio bug since your laptop does not have surround40 chmap
It is not clear how pulseaudio's 21 channel-map match with alsa's 2.1 chmap
http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/profile-sets/default.conf
[Mapping analog-surround-21]
device-strings = surround21:%f
channel-map = front-left,front-right,lfe
paths-output = analog-output analog-output-lineout analog-output-speaker
priority = 8
direction = output
[Mapping analog-surround-40]
device-strings = surround40:%f
channel-map = front-left,front-right,rear-left,rear-right
paths-output = analog-output analog-output-lineout analog-output-speaker
priority = 7
direction = output
>
> Pulseaudio verbose log while plugging in the subwoofer:
http://pastebin.com/Ya5u1qz6
https://bugs.freedesktop.org/enter_bug.cgi?product=PulseAudio
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20150726/1372f2b8/attachment.html>
More information about the pulseaudio-discuss
mailing list