Dummy output and no sound on Ubuntu 20.04 LTS

I've ben using a fresh Linux install for a few days and everything was okay. Today, I've left the system open for a few hours and when I came back I realized that there is no sound. I've googled the problem and applied some of the steps that people posted there but still I have no sound. When I plug in earphones I hear audio in them though.

To start, I have run
Code:sudo lspci -vv | grep -i audioand the output is
Code:00:1f.3 Audio device: Intel Corporation 200 Series PCH HD Audio
Subsystem: ASRock Incorporation 200 Series PCH HD Audioand I've also run
Code:sudo dmesg | grep -i audioand the output is
Code:[ 0.123770] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[ 37.153878] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 37.180661] snd_hda_codec_generic hdaudioC0D0: autoconfig for Generic: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:line
[ 37.180663] snd_hda_codec_generic hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 37.180663] snd_hda_codec_generic hdaudioC0D0: hp_outs=1 (0x1b/0x0/0x0/0x0/0x0)
[ 37.180664] snd_hda_codec_generic hdaudioC0D0: mono: mono_out=0x0
[ 37.180664] snd_hda_codec_generic hdaudioC0D0: inputs:
[ 37.180665] snd_hda_codec_generic hdaudioC0D0: Front Mic=0x19
[ 37.180666] snd_hda_codec_generic hdaudioC0D0: Rear Mic=0x18
[ 37.180667] snd_hda_codec_generic hdaudioC0D0: Line=0x1a
[ 37.191554] snd_hda_codec_generic hdaudioC0D2: autoconfig for Generic: line_outs=0 (0x0/0x0/0x0/0x0/0x0) type:line
[ 37.191556] snd_hda_codec_generic hdaudioC0D2: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 37.191556] snd_hda_codec_generic hdaudioC0D2: hp_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 37.191557] snd_hda_codec_generic hdaudioC0D2: mono: mono_out=0x0
[ 37.191558] snd_hda_codec_generic hdaudioC0D2: dig-out=0x3/0x0
[ 37.191558] snd_hda_codec_generic hdaudioC0D2: inputs:The audio output that I have is in the display and it have worked fine before.