snd_hda_intel audio driver is not loading
I recently installed
debian9 stretch on my
acer 14 CB3-431 chromebook.
Here is the link of this iso I used: firmware-9.4.0-amd64-netinst.iso
I did fresh install of stretch to sid in order to install:
firmware-linux-nonfree and avoid driver problems I had in previous installations.
However, sound and microphone are not working on my machine. I checked what audio chip my chromebook used:
luka@chromebook:~$ sudo dmesg | grep audio [ 5.162184] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
I looked up on intel website the driver but didn't find it. I also used
alsamixer and checked that all channels of my audio card were not muted and configured with sufficient volume to produce sound. Sound still doesn't work.
This shows that my audio chip is enabled:
luka@chromebook:~$ amixer Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 0 - 65536 Mono: Front Left: Playback 65536 [100%] [on] Front Right: Playback 65536 [100%] [on] Simple mixer control 'Capture',0 Capabilities: cvolume cswitch cswitch-joined Capture channels: Front Left - Front Right Limits: Capture 0 - 65536 Front Left: Capture 65536 [100%] [on] Front Right: Capture 65536 [100%] [on]
I searched for the driver on my machine:
luka@chromebook:~$ locate i915 /lib/firmware/i915 /lib/firmware/i915/bxt_dmc_ver1.bin /lib/firmware/i915/bxt_dmc_ver1_07.bin /lib/firmware/i915/bxt_guc_ver8_7.bin /lib/firmware/i915/bxt_huc_ver01_07_1398.bin /lib/firmware/i915/kbl_dmc_ver1.bin /lib/firmware/i915/kbl_dmc_ver1_01.bin /lib/firmware/i915/kbl_guc_ver9_14.bin /lib/firmware/i915/kbl_huc_ver02_00_1810.bin /lib/firmware/i915/skl_dmc_ver1.bin /lib/firmware/i915/skl_dmc_ver1_23.bin /lib/firmware/i915/skl_dmc_ver1_26.bin /lib/firmware/i915/skl_guc_ver1.bin /lib/firmware/i915/skl_guc_ver4.bin /lib/firmware/i915/skl_guc_ver6.bin /lib/firmware/i915/skl_guc_ver6_1.bin /lib/firmware/i915/skl_huc_ver01_07_1398.bin /lib/modules/4.15.0-3-amd64/kernel/drivers/gpu/drm/i915 /lib/modules/4.15.0-3-amd64/kernel/drivers/gpu/drm/i915/i915.ko /lib/modules/4.9.0-6-amd64/kernel/drivers/gpu/drm/i915 /lib/modules/4.9.0-6-amd64/kernel/drivers/gpu/drm/i915/i915.ko /usr/lib/x86_64-linux-gnu/dri/i915_dri.so
It seems the driver is installed but not loading or working. How can I fix my sound and microphone problem?