When I open sound settings, No profile options are listed for "Built-in audio" except for "Off".
Machine is a Acer Chromebook Spin 713 with MrChromeBox coreboot firmware and Ubuntu MATE 21.04 installed (however, issue also exists with Lubuntu 20.04.3). Laptop has built-in speakers and a 3.5mm audio jack, but does not recognize any playback audio devices except HDMI.
Sound Device: 00:1f.3 Multimedia audio controller: Intel Corporation Comet Lake PCH-LP cAVS DeviceName: Multimedia audio controller Subsystem: Intel Corporation Comet Lake PCH-LP cAVS Flags: bus master, fast devsel, latency 64, IRQ 148 Memory at 9fa14000 (64-bit, non-prefetchable) [size=16K] Memory at 9f900000 (64-bit, non-prefetchable) [size=1M] Capabilities: Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel, snd_sof_pci
alsa-info output: http://alsa-project.org/db/?f=7d8c2e0f06a902f817c71fdf4aae1f16e7b21227
Note: I have made one modification to /etc/modprobe.d/alsa-base.conf, adding the following line: "options snd-hda-intel dmic-detect=0" Before this, the laptop's sound card was not being recognized at all.
alsa-info output from before: http://alsa-project.org/db/?f=3c348ee95fa38bceb3f25e38e4de431766f808c8
sudo dmesg | grep audiocommand? – J.T. Dec 22 '21 at 01:55Audio only works over HDMI, not 3.5mm jack nor internal speakers (the device is listed as "Dummy Driver" in the sound settings).
– m-bitsnbites Apr 30 '22 at 06:20sudo dmesg | grep audiolists:[ 3.653584] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]), so the driver appears to be working fine.