Public bug reported:
I am running Linux Mint 22.2 with a Comet Lake PCH-LP cAVS chipset. My
analog audio ports are not detected; I only have a 'Dummy Output'. I
have tried installing firmware-sof-signed, using dmic_detect=0,
dsp_driver=1, and various model= options in alsa-base.conf. None have
worked. The analog codec (Realtek, likely ALC2xx) is simply not showing
up in aplay -l.
It seems the problem lies with the specific motherboard not exposing the
correct identification codes (Vendor/Subsystem ID) to the Linux kernel.
Here is the diagnostic data:
bahanet@tars:~$ inxi -Fxzd
System:
Kernel: 6.14.0-35-generic arch: x86_64 bits: 64 compiler: gcc v: 13.3.0
Desktop: Cinnamon v: 6.4.8 Distro: Linux Mint 22.2 Zara
base: Ubuntu 24.04 noble
Machine:
Type: Desktop Mobo: N/A model: N/A serial: <superuser required>
BIOS: American Megatrends v: 5.17 date: 07/13/2020
CPU:
Info: 6-core model: Intel Core i7-10710U bits: 64 type: MT MCP
arch: Comet Lake rev: 0 cache: L1: 384 KiB L2: 1.5 MiB L3: 12 MiB
Speed (MHz): avg: 607 high: 900 min/max: 400/4700 cores: 1: 900 2: 900
3: 900 4: 400 5: 900 6: 400 7: 400 8: 400 9: 400 10: 400 11: 887 12: 400
bogomips: 38399
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel Comet Lake UHD Graphics driver: i915 v: kernel arch: Gen-9.5
bus-ID: 00:02.0
Display: x11 server: X.Org v: 21.1.11 with: Xwayland v: 23.2.6 driver: X:
loaded: modesetting unloaded: fbdev,vesa dri: iris gpu: i915 resolution:
1: 2100x3360~60Hz 2: 3840x2400~60Hz 3: 3000x2000~60Hz
API: EGL v: 1.5 drivers: iris,swrast platforms:
active: gbm,x11,surfaceless,device inactive: wayland
API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa
v: 25.0.7-0ubuntu0.24.04.2 glx-v: 1.4 direct-render: yes renderer: Mesa
Intel UHD Graphics (CML GT2)
Audio:
Device-1: Intel Comet Lake PCH-LP cAVS driver: snd_hda_intel v: kernel
bus-ID: 00:1f.3
API: ALSA v: k6.14.0-35-generic status: kernel-api
Server-1: PipeWire v: 1.0.5 status: active
Server-2: PulseAudio v: 16.1 status: off (using pipewire-pulse)
Network:
Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
driver: r8169 v: kernel port: 3000 bus-ID: 01:00.0
IF: enp1s0 state: down mac: <filter>
Device-2: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel bus-ID: 03:00.0
IF: wlp3s0 state: up mac: <filter>
Device-3: ASIX AX88179 Gigabit Ethernet driver: ax88179_178a type: USB
bus-ID: 1-6.1:4
IF: enx0023561c4841 state: down mac: <filter>
Bluetooth:
Device-1: Intel AX200 Bluetooth driver: btusb v: 0.8 type: USB bus-ID: 1-8:3
Report: hciconfig ID: hci0 rfk-id: 0 state: down
bt-service: enabled,running rfk-block: hardware: no software: yes
address: <filter>
Drives:
Local Storage: total: 953.87 GiB used: 33.72 GiB (3.5%)
ID-1: /dev/nvme0n1 vendor: Samsung model: MZVLB1T0HBLR-000L2
size: 953.87 GiB temp: 49.9 C
Message: No optical or floppy data found.
Partition:
ID-1: / size: 937.33 GiB used: 33.71 GiB (3.6%) fs: ext4 dev: /dev/nvme0n1p3
ID-2: /boot/efi size: 512 MiB used: 6.1 MiB (1.2%) fs: vfat
dev: /dev/nvme0n1p2
Swap:
ID-1: swap-1 type: file size: 2 GiB used: 0 KiB (0.0%) file: /swapfile
Sensors:
System Temperatures: cpu: 53.0 C pch: 49.0 C mobo: N/A
Fan Speeds (rpm): N/A
Info:
Memory: total: 32 GiB available: 31.22 GiB used: 5.32 GiB (17.0%)
Processes: 317 Uptime: 17m Init: systemd target: graphical (5)
Packages: 2022 Compilers: gcc: 13.3.0 Shell: Bash v: 5.2.21 inxi: 3.3.34
**********************************************************************************
bahanet@tars:~$ aplay -l
**** 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
**********************************************************************************
bahanet@tars:~$ journalctl -k | grep -Ei
"ALSA|HDA|sof[-]|HDMI|snd[_-]|sound|hda.codec|hda.intel"
Nov 05 16:11:42 tars kernel: snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0
(ops i915_audio_component_bind_ops [i915])
Nov 05 16:11:42 tars kernel: snd_hda_intel 0000:00:1f.3: Applying patch
firmware 'hda-jack-retask.fw'
Nov 05 16:11:42 tars kernel: snd_hda_intel 0000:00:1f.3: loading
/lib/firmware/hda-jack-retask.fw failed with error -22
Nov 05 16:11:42 tars kernel: snd_hda_intel 0000:00:1f.3: Direct firmware load
for hda-jack-retask.fw failed with error -22
Nov 05 16:11:42 tars kernel: snd_hda_intel 0000:00:1f.3: Cannot load firmware,
continue without patching
Nov 05 16:11:42 tars kernel: input: HDA Intel PCH HDMI/DP,pcm=3 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input19
Nov 05 16:11:42 tars kernel: input: HDA Intel PCH HDMI/DP,pcm=7 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input20
Nov 05 16:11:42 tars kernel: input: HDA Intel PCH HDMI/DP,pcm=8 as
/devices/pci0000:00/0000:00:1f.3/sound/card0/input21
**********************************************************************************
The Full ALSA Info Script Output is attached.
Regard,
Said
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "Full ALSA Info Script Output"
https://bugs.launchpad.net/bugs/2130757/+attachment/5924465/+files/alsa-info.txt.CVU9y7g3uA
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https://bugs.launchpad.net/bugs/2130757
Title:
Comet Lake PCH-LP cAVS: Analog audio (Realtek ALCxxx) not detected,
only HDMI outputs present (Dummy Output issue).
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