LMDE 5 No Sound Dummy Output

[eagle89]

I am trying to get LMDE 5 working on an Acer Chromebook 14. This Chromebook has a finicky sound configuration but I have successfully gotten it to play audio from multiple distros previously including Linux Mint 20.3, Pop_OS!, Elementary OS, Ubuntu, and Debian 11. I most recently installed Debian 11 with cinnamon desktop and the sound worked straight out so I thought I'd give LMDE a try because I prefer the Linux Mint Cinnamon 20.3 desktop look/feel over Debian 11 with cinnamon. Oddly, when I install LMDE 5 I only see the Dummy Output in sound settings, have NO sound and NONE of the tricks that worked with the myriad of ubuntu-based distros work on LMDE (I believe b/c it is debian, not ubuntu). Since the sound works on Debian 11 Cinnamon with NO modifications, I'm pretty sure there is something unique with LMDE 5 install/configuration that is preventing the sound from working. Just did a fresh install this morning and haven't tried anything yet, hoping the community can help me troubleshoot the root cause and get the sound working on this machine with LMDE 5. PLEASE HELP!!!!

Here is the output of a cat /proc/asound/cards command:

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 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0x91314000 irq 315
 1 [chtrt5650      ]: chtrt5650 - chtrt5650
                      chtrt5650

and here is the output of an aplay -l command:

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**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: chtrt5650 [chtrt5650], device 0: Audio (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: chtrt5650 [chtrt5650], device 1: Deep-Buffer Audio (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Below I've copied my system configuration from LMDE system information and will provide any output/information requested by all of you:

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System:    Kernel: 5.10.0-19-amd64 x86_64 bits: 64 compiler: gcc v: 10.2.1 
           Desktop: Cinnamon 5.4.12 tk: GTK 3.24.24 wm: Mutter dm: LightDM Distro: LMDE 5 Elsie 
           base: Debian 11.2 bullseye 
Machine:   Type: Laptop System: GOOGLE product: Edgar v: 1.0 serial: <filter> Chassis: type: 9 
           serial: <filter> 
           Mobo: GOOGLE model: Edgar v: 1.0 serial: <filter> UEFI: coreboot v: MrChromebox-4.18.1 
           date: 10/27/2022 
Battery:   ID-1: BAT0 charge: 12.6 Wh condition: 29.7/44.7 Wh (67%) volts: 11.3/11.4 
           model: SONYCor AP13J4K serial: <filter> status: Discharging 
CPU:       Info: Quad Core model: Intel Celeron N3160 bits: 64 type: MCP arch: Airmont rev: 4 
           L2 cache: 1024 KiB 
           flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 12800 
           Speed: 881 MHz min/max: 480/2240 MHz Core speeds (MHz): 1: 548 2: 617 3: 640 4: 640 
Graphics:  Device-1: Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics 
           driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:22b1 
           Device-2: Chicony HD WebCam type: USB driver: uvcvideo bus ID: 1-4:2 chip ID: 04f2:b567 
           Display: x11 server: X.Org 1.20.11 driver: loaded: modesetting unloaded: fbdev,vesa 
           resolution: 1920x1080~60Hz s-dpi: 96 
           OpenGL: renderer: Mesa DRI Intel HD Graphics 400 (BSW) v: 4.6 Mesa 20.3.5 compat-v: 3.0 
           direct render: Yes 
Audio:     Device-1: Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series High 
           Definition Audio 
           driver: snd_hda_intel v: kernel bus ID: 00:1b.0 chip ID: 8086:2284 
           Sound Server: ALSA v: k5.10.0-19-amd64 
Network:   Device-1: Intel Wireless 7265 driver: iwlwifi v: kernel port: 1000 bus ID: 02:00.0 
           chip ID: 8086:095a 
           IF: wlp2s0 state: up mac: <filter> 
Bluetooth: Device-1: Intel Bluetooth wireless interface type: USB driver: btusb v: 0.8 
           bus ID: 1-5:3 chip ID: 8087:0a2a 
           Report: ID: hci0 state: up running bt-v: 2.1 lmp-v: 4.2 sub-v: 1100 address: <filter> 
Drives:    Local Storage: total: 29.12 GiB used: 7.18 GiB (24.6%) 
           ID-1: /dev/mmcblk0 vendor: SK Hynix model: HBG4a2 size: 29.12 GiB serial: <filter> 
Partition: ID-1: / size: 24.27 GiB used: 7.17 GiB (29.6%) fs: ext4 dev: /dev/mmcblk0p3 
           ID-2: /boot/efi size: 285.4 MiB used: 3.4 MiB (1.2%) fs: vfat dev: /dev/mmcblk0p1 
Swap:      ID-1: swap-1 type: partition size: 4 GiB used: 0 KiB (0.0%) priority: -2 
           dev: /dev/mmcblk0p2 
Sensors:   System Temperatures: cpu: 34.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Repos:     Packages: apt: 2027 
           No active apt repos in: /etc/apt/sources.list 
           Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
           1: deb https: //plug-mirror.rcac.purdue.edu/mint elsie main upstream import backport
           2: deb http: //plug-mirror.rcac.purdue.edu/debian/ bullseye main contrib non-free
           3: deb http: //plug-mirror.rcac.purdue.edu/debian/ bullseye-updates main contrib non-free
           4: deb http: //security.debian.org/ bullseye-security main contrib non-free
           5: deb http: //plug-mirror.rcac.purdue.edu/debian/ bullseye-backports main contrib non-free
Info:      Processes: 208 Uptime: 55m Memory: 3.79 GiB used: 2.29 GiB (60.6%) Init: systemd v: 247 
           runlevel: 5 Compilers: gcc: 10.2.1 alt: 10 Client: Cinnamon v: 5.4.12 inxi: 3.3.01

[jwiz]

Pls. check (apt search) if 'firmware-sof-signed' is installed on your system?

The other option would be to create /etc/modprobe.d/alsa.conf (if not there already) and put in:
options snd-intel-dspcfg dsp_driver=1

[eagle89]

firmware-sof-signed was NOT installed so I installed it and rebooted. After reboot, still no sound and still Dummy Output is only sound card found. I created alsa.conf file in /etc/modprobe.d folder and added text as described, saved, rebooted. After reboot, still no sound and still Dummy Output is only sound card found. Thanks for the suggestion....keep them coming!

[jwiz]

If you have firmware-sof installed try 'snd-intel-dspcfg dsp_driver=3' instead.

[Joe2Shoe]

1. Download this repository to Downloads:
https://github.com/bliutwo/dummy-sound-fix-ubuntu
2. Right-click on the file and extract the file in Downloads.
3. Right-click inside the extracted folder and choose "Open in Terminal".
4. Run the following command in Terminal:
bash install.sh
5. Reboot.
6. After steps 2-4, you will be unable to update your system. The following command will re-allow you to update it:
sudo apt-get install -f
OR
bash fix.sh
7. Simply re-run steps 3-5 if you reboot your system and/or sound stops working.

[eagle89]

Thanks for all of the suggestions. None worked for but but I was successful in getting the sound to work in LMDE 5 and it was actually SUPER EASY. Not sure if this package should have been detected during installation or what but in all of my online research and comparing the LMDE install to a Debian Install, but all I had to do was install "firmware-intel-sound" from synaptic package manager, reboot, and sound works and sound card is recognized in pavucontrol and sound settings. Nothing else needed adjusting. SO, SO happy...love this distro! Thanks for the feedback helping me reach a solution.

[kb90210]

...but all I had to do was install "firmware-intel-sound" from synaptic package manager, reboot, and sound works and sound card is recognized in pavucontrol and sound settings. Nothing else needed adjusting.

Same issue, same solution that worked for me. Thanks eagle89!