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
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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
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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"