I have a Dell Inspiron N5110 that won't play sound. To be more specific, I can't hear any sound from the speakers when running Ubuntu 16.04. I also dual boot Windows 7 on the machine and sound works fine there.
Here is an exhaustive list of screenshots, command output, and troubleshooting information:
Hardware
$ lspci
...
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
...
pavucontrol
alsamixer
pactl info
Server String: /run/user/1000/pulse/native
Library Protocol Version: 30
Server Protocol Version: 30
Is Local: yes
Client Index: 7
Tile Size: 65472
User Name: nathan
Host Name: nathan-laptop
Server Name: pulseaudio
Server Version: 8.0
Default Sample Specification: s16le 2ch 44100Hz
Default Channel Map: front-left,front-right
Default Sink: alsa_output.pci-0000_00_1b.0.analog-stereo
Default Source: alsa_input.pci-0000_00_1b.0.analog-stereo
Cookie: 1da0:01c2
ps aux | grep pulse
nathan 5952 1.5 0.1 416424 10576 ? S<l 16:01 0:00 /usr/bin/pulseaudio --start --log-target=syslog
dmesg | grep snd
[ 8.215325] snd_hda_codec_idt hdaudioC0D0: autoconfig for 92HD87B1/3: line_outs=1 (0xd/0x0/0x0/0x0/0x0) type:speaker
[ 8.215330] snd_hda_codec_idt hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 8.215333] snd_hda_codec_idt hdaudioC0D0: hp_outs=1 (0xb/0x0/0x0/0x0/0x0)
[ 8.215335] snd_hda_codec_idt hdaudioC0D0: mono: mono_out=0x0
[ 8.215337] snd_hda_codec_idt hdaudioC0D0: inputs:
[ 8.215340] snd_hda_codec_idt hdaudioC0D0: Internal Mic=0x11
[ 8.215342] snd_hda_codec_idt hdaudioC0D0: Mic=0xa
Let me know if more information is needed and I can easily add it to the question.
Further Updates
- ALSA doesn't seem to be working at all —
aplay /usr/share/sounds/alsa/Front_Right.wav
was completely silent
cat /proc/asound/card0/codec* | grep Codec
on my system it yields: Codec: IDT 92HD91BXX Codec: Intel PantherPoint HDMIaplay /usr/share/sounds/alsa/Front_Right.wav
.