Debian. Sound problems?

Question

Debian

Hello. Installed debian for the first time. I have 2 sound cards, I wanted to change the default one, I started clicking the settings ... the shaitan machine, all the sound was gone.
In general, I initially tried to configure through alsa, editing several files.
After the failure, I decided to try to roll back, found the necessary information (deleted files, performed "alsactl init"), but there is no sound.
I would already agree to return to the original position. That's just how?
What is strange at the moment - when I run "alsamixer" from the console, it initially shows me "PulseAudio", but I kind of can choose my cards.
Output from cat /proc/asound/cards:

0 [MID            ]: HDA-Intel - HDA Intel MID
                      HDA Intel MID at 0xfbcf8000 irq 42
 1 [HDMI           ]: HDA-Intel - HDA ATI HDMI
                      HDA ATI HDMI at 0xfbffc000 irq 43
 2 [Device         ]: USB-Audio - USB PnP Sound Device
                      C-Media Electronics Inc. USB PnP Sound Device at usb-0000:00:1d.0-1.2, full spe

aplay -l output:

**** List of PLAYBACK Hardware Devices ****
card 0: MID [HDA Intel MID], device 0: VT1818S Analog [VT1818S Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: MID [HDA Intel MID], device 3: VT1818S Digital [VT1818S Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

I really don’t want to reinstall the system because of this, I hope I can figure it out. Thanks in advance for your advice.

Answer 1

I have two sound cards on Debian: the built-in Realtek and an additional SoundBlaster. There were problems setting up alsa to use the SB card. Switched from alsa to pulseaudio by simply installing the pulseaudio package. Additionally, I installed pavucontrol so as not to bother with terminal settings. I did not configure the packages - I defined the sound input / output devices as Duplex via pavucontrol and it worked without any problems.
And if there are already packages, but you need to reset or roll back the settings, then you can try dpkg-reconfigurethe command, the parameter of which is to feed the package name for reconfiguration.