No sound with systemd and alsa

[d3x73r]

I am running a Gentoo box, and after and update the sound is muted. I have recently migrated to systemd but don't know if it is a systemd related issue.

Here is some outputs

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$ lsmod | grep 'snd'

snd_hda_codec_hdmi     25590  1 
snd_hda_codec_realtek    30851  1 
snd_hda_intel          24209  7 
snd_hda_codec         100852  3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
snd_hwdep               5213  1 snd_hda_codec
snd_pcm                60443  4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
snd_page_alloc          6218  2 snd_pcm,snd_hda_intel
snd_timer              15485  1 snd_pcm
snd                    48467  20 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_hda_codec,snd_hda_intel

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$ amixer

Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 65536
  Mono:
  Front Left: Playback 30129 [46%] [on]
  Front Right: Playback 30129 [46%] [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch cswitch-joined
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 65536
  Front Left: Capture 8251 [13%] [on]
  Front Right: Capture 8251 [13%] [on]

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aplay -v < /dev/urandom

Plays a clear static noised sound.

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$ lspci | grep 'Audio'

00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)

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$ alsactl init

Found hardware: "HDA-Intel" "Intel CougarPoint HDMI" "HDA:10ec0269,10280446,00100100 HDA:80862805,80860101,00100000" "0x1028" "0x0446"
Hardware is initialized using a generic method

As I can see, everything seems normal. However my system returns no sound. After alsactcl init command, the sound works. How to make this to start automatically?
KDE also says that my sound card is disabled and the drivers may be removed form config list.

[Kompi]

After alsactcl init command, the sound works. How to make this to start automatically?

Normally it is enough to call alsactl restore to restore the mixer settings. This one should be done by systemd automatically if alsa-utils is installed. (it shipped /usr/lib/systemd/system/alsa-[store|restore].service").

If you need to additionally call "alsactl init" at boot, just write a simple unit file. For example:

[Unit]
Description=Init Sound Card State

[Service]
Type=oneshot
ExecStart=/usr/sbin/alsactl init

[Install]
WantedBy=basic.target

And enable it at boot:

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systemctl enable alsa-init