Yesterday I was using my laptop just fine (Ubuntu 18.04 LTS) and put it to sleep. This morning there was no sound output from it. I tried the speakers and headphones but neither work.
I tried restarting and even formatting the laptop, but again, nothing worked.
On using sudo lspci I get:
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 1 (rev e4)
00:1c.2 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 3 (rev e4)
00:1c.3 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 4 (rev e4)
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
02:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller (rev 05)
On going to alsamixer I found some options were muted and unmuted those, but even then I can only listen a very faint sound in the distance. I have looked for other similar solutions but none seems to work or be applicable in this case. I've looked into pulseaudio and followed several other solutions I found, but they either don't work or aren't fully applicable here. I don't know what exactly is the issue here.
The twist here is that a bluetooth earphone does work, no problem at all.
Also, running pavucontrol the sound green-bar indicates that there is indeed sound being executed it just doesn't (neither on the speakers nor on the wired headphone)
Any help is greatly appreciated :)
PS: I apologize if there is confusion or if the post is not that clear. As I stated above, I'm not really sure what is going on.
Edit: Apparently there might be an issue with the internal microphone as well (or it is misconfigured in the alsamixer)
