Audio muted by default at system boot

[crpz41]

I already opened alsamixer, and I noticed the every time I turn the PC on, the audio is muted
and I have to open alsamixer, select the output device and press M, every time to have audio working.
I already tried to save alsamixer settings by:

sudo alsactl store

but once I reboot I have still no audio.
I already disabled via pulseaudio the only other output device, a NVIDIA HDMI audio.


IMPORTANT UPDATES and SOLUTION
- this problem appears when you install nvidia drivers 455 but already happened in history with older versions of both ubuntu and nvidia drivers
- every time I reload pulseaudio and amixer, after I unmuted the audio, audio turns back muted, this is the same that happens if you reboot the system.
- this folder seems to contain really interesting settings: /usr/share/pulseaudio/alsa-mixer/paths/
on this path there are many files, one of those is related to USB-Audio (my audio out),
in my case this file was called analog-output-speaker.conf
if I set everything to ON inside (by default everything was on OFF or mute), the problem is fixed

[1fallen]

Show us this please:

amixer | grep mixer

[crpz41]

Simple mixer control 'IEC958',0
Simple mixer control 'IEC958',1
Simple mixer control 'IEC958',2
Simple mixer control 'IEC958',3
Simple mixer control 'IEC958',4
Simple mixer control 'IEC958',5
Simple mixer control 'IEC958',6

[1fallen]

Something is very wrong with yours:
Mine shows:

Simple mixer control 'Master',0
Simple mixer control 'Headphone',0
Simple mixer control 'Speaker',0
Simple mixer control 'Bass Speaker',0
Simple mixer control 'Mic Boost',0
Simple mixer control 'Mic Mute-LED Mode',0
Simple mixer control 'IEC958',0
Simple mixer control 'IEC958',1
Simple mixer control 'IEC958',2
Simple mixer control 'Capture',0
Simple mixer control 'Auto-Mute Mode',0
Simple mixer control 'DAC1',0
Simple mixer control 'DAC2',0
Simple mixer control 'Dmic0',0
Simple mixer control 'Dmic1 2nd',0
Simple mixer control 'PGA1.0 1 Master',0
Simple mixer control 'PGA2.0 2 Master',0
Simple mixer control 'PGA3.0 3 Master',0
Simple mixer control 'PGA4.0 4 Master',0
Simple mixer control 'PGA7.0 7 Master',0
Simple mixer control 'PGA8.0 8 Master',0
Simple mixer control 'PGA9.0 9 Master',0

Also would you try this:

amixer -D pulse sset Master 80%

Report the results

[crpz41]

Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right - Rear Left
  Limits: Playback 0 - 65536
  Mono:
  Front Left: Playback 52429 [80%] [on]
  Front Right: Playback 52429 [80%] [on]
  Rear Left: Playback 52429 [80%] [on]

[1fallen]

Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right - Rear Left
  Limits: Playback 0 - 65536
  Mono:
  Front Left: Playback 52429 [80%] [on]
  Front Right: Playback 52429 [80%] [on]
  Rear Left: Playback 52429 [80%] [on]

Any Sound???
Also try a reboot now, if the sound works currently.

[crpz41]

now the audio works... because was already working...(I have to enable every time the system is rebooted)
but If I reboot the audio may disappear.
I'll update this post once I rebooted

EDIT:
after reboot no audio
this is the output of previous command

Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right - Rear Left
  Limits: Playback 0 - 65536
  Mono:
  Front Left: Playback 52429 [80%] [on]
  Front Right: Playback 52429 [80%] [on]
  Rear Left: Playback 52429 [80%] [on]

[1fallen]

now the audio works... because was already working...(I have to enable every time the system is rebooted)
but If I reboot the audio may disappear.
I'll update this post once I rebooted

EDIT:
after reboot no audio
this is the output of previous command

Simple mixer control 'Master',0
  Capabilities: pvolume pswitch pswitch-joined
  Playback channels: Front Left - Front Right - Rear Left
  Limits: Playback 0 - 65536
  Mono:
  Front Left: Playback 52429 [80%] [on]
  Front Right: Playback 52429 [80%] [on]
  Rear Left: Playback 52429 [80%] [on]

To make this permanent add this to "Startup Applications"

sleep 10 && amixer -c 0 set Speaker 80%

Now reboot again, is there now sound without you making changes???
EDIT: I added a delay, so your sound might not show instantly. Just a Heads Up

[crpz41]

it just says:
amixer: Unable to find simple control 'Speaker',0

no solution for now

[1fallen]

Sorry I just saw your reply, one more to try, >>>Change *only* <'Speaker' ,0> to <Master> in the Startup Applications.