Linux Mint 20 Ulyana No sound, Dummy Output

chanrakrobin · Post by **chanrakrobin** » Tue Jan 25, 2022 7:48 am

Hello all, this is my first post here, I'm very new to linux and I'll try my best.

I've been using Linux Mint for around a year and haven't encountered any sound issues before. But in the last few weeks my machine became very strange. The sound output just come and go, upon startup there's still the booting/welcome sound, but when I pressed volume up/ volume down button on my keyboard, there's no sound anymore. Also sometimes, the volume meter display just lags behind a lot, like it takes around 1 minute for my volume up button effect to display. When I run pavucontrol in terminal it usually says either 1) Dummy Output or 2) "Establishing connection to PulseAudio. Please wait..."

Oh yes, recently my firefox always crash spontaneously too. (Sorry if that's digressing, but sometimes I think whenever I try to browse a website that require sound output such as discord or youtube or zoom, the firefox browser suddenly crash)
Also when I tried to restart/shutdown my computer there's always this log:

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Some Programs are still running:
PulseAudio Sound System (Not responding)
Cinnamon Settings Daemon -media-keys (Not responding)
Cinnamon Settings Daemon -sound (Not responding)

I tried to follow the instructions by the trouble shooting guide on this forum and those written in Mr.Een's website and haven't found any success.

**EDIT** I tried to install debian 11 on my machine too. And I experienced the same problem

After the fresh installation, and loading up the GNOME desktop for debian, the sound works fine, (sorry I couldn't perfectly remember the details here, I think I pressed volume up/down on my keyboard for a bit), then suddenly after 5 minutes or so, I also encountered the dummy output issue again. Completely no sound.

Here are some of my system outputs. Thanks in advance

inxi -Fxz output:

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System:    Kernel: 5.4.0-96-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Cinnamon 
           Distro: Linux Mint 20 Ulyana base: Ubuntu 20.04 focal 
Machine:   Type: Desktop Mobo: Gigabyte model: B460M GAMING HD v: x.x serial: <filter> 
           UEFI: American Megatrends v: F4 date: 08/28/2020 
CPU:       Topology: 6-Core model: Intel Core i5-10400 bits: 64 type: MT MCP arch: N/A 
           L2 cache: 12.0 MiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 69597 
           Speed: 800 MHz min/max: 800/4300 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800 
           5: 800 6: 801 7: 801 8: 801 9: 800 10: 801 11: 800 12: 800 
Graphics:  Device-1: Intel vendor: Gigabyte driver: i915 v: kernel bus ID: 00:02.0 
           Display: x11 server: X.Org 1.20.13 driver: modesetting unloaded: fbdev,vesa 
           resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa Intel UHD Graphics 630 (CML GT2) v: 4.6 Mesa 21.0.3 
           direct render: Yes 
Audio:     Device-1: Intel vendor: Gigabyte driver: snd_hda_intel v: kernel bus ID: 00:1f.3 
           Sound Server: ALSA v: k5.4.0-96-generic 
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Gigabyte 
           driver: r8169 v: kernel port: 3000 bus ID: 02:00.0 
           IF: enp2s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Drives:    Local Storage: total: 465.76 GiB used: 220.81 GiB (47.4%) 
           ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 970 EVO Plus 500GB size: 465.76 GiB 
Partition: ID-1: / size: 408.41 GiB used: 220.81 GiB (54.1%) fs: ext4 dev: /dev/nvme0n1p2 
Sensors:   System Temperatures: cpu: 37.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Info:      Processes: 305 Uptime: 8m Memory: 15.50 GiB used: 1.34 GiB (8.7%) Init: systemd 
           runlevel: 5 Compilers: gcc: 9.3.0 Shell: bash v: 5.0.17 inxi: 3.0.38

aplay -l output:

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**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

pacmd list-sinks (while a song is on) output:

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1 sink(s) available.
  * index: 0
	name: <auto_null>
	driver: <module-null-sink.c>
	flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
	state: RUNNING
	suspend cause: (none)
	priority: 1000
	volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
	        balance 0.00
	base volume: 65536 / 100% / 0.00 dB
	volume steps: 65537
	muted: no
	current latency: 20.97 ms
	max request: 7 KiB
	max rewind: 7 KiB
	monitor source: 0
	sample spec: s16le 2ch 48000Hz
	channel map: front-left,front-right
	             Stereo
	used by: 1
	linked by: 3
	configured latency: 40.00 ms; range is 0.50 .. 2000.00 ms
	module: 11
	properties:
		device.description = "Dummy Output"
		device.class = "abstract"
		device.icon_name = "audio-card"