ALC256 Microphone not detected in Acer Swift 3 SF315-52-81HD

[decros]

Hi,
I have installed Linux Mint in this new laptop and for my surprise the Microphone is not even detected, Headphones and Internal Speakers works very well. I attached the results of running inxi -Fxz and aplay -l and also dmesg | grep snd in the terminal as sugested by MrEen.
Thank you for any help you can provide.

[decros]

moises@moises-Swift-SF315-52:~$ inxi -Fxz
System:
Host: moises-Swift-SF315-52 Kernel: 4.15.0-43-generic x86_64 bits: 64
compiler: gcc v: 7.3.0 Desktop: Cinnamon 4.0.8
Distro: Linux Mint 19.1 Tessa base: Ubuntu 18.04 bionic
Machine:
Type: Laptop System: Acer product: Swift SF315-52 v: V1.07
serial: <filter>
Mobo: KBL model: Erdinger_KL v: V1.07 serial: <filter>
UEFI: American Megatrends v: 1.07 date: 09/28/2018
Battery:
ID-1: BAT0 charge: 45.3 Wh condition: 45.6/48.9 Wh (93%) model: AC17B8K
status: Discharging
CPU:
Topology: Quad Core model: Intel Core i7-8550U bits: 64 type: MT MCP
arch: Kaby Lake rev: A L2 cache: 8192 KiB
flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 31872
Speed: 800 MHz min/max: 400/4000 MHz Core speeds (MHz): 1: 800 2: 800
3: 800 4: 800 5: 800 6: 800 7: 800 8: 800
Graphics:
Device-1: Intel UHD Graphics 620 vendor: Acer Incorporated ALI
driver: i915 v: kernel bus ID: 00:02.0
Display: x11 server: X.Org 1.19.6 driver: modesetting unloaded: fbdev,vesa
resolution: 1920x1080~60Hz
OpenGL: renderer: Mesa DRI Intel UHD Graphics 620 (Kabylake GT2)
v: 4.5 Mesa 18.0.5 direct render: Yes
Audio:
Device-1: Intel Sunrise Point-LP HD Audio vendor: Acer Incorporated ALI
driver: snd_hda_intel v: kernel bus ID: 00:1f.3
Sound Server: ALSA v: k4.15.0-43-generic
Network:
Device-1: Broadcom Limited BCM4352 802.11ac Wireless Network Adapter
vendor: Lenovo driver: wl v: kernel port: f040 bus ID: 01:00.0
IF: wlp1s0 state: up mac: <filter>
Drives:
Local Storage: total: 596.46 GiB used: 15.76 GiB (2.6%)
ID-1: /dev/sda model: SPCC Solid State Disk size: 238.47 GiB
ID-2: /dev/sdb vendor: SK Hynix model: HFS256G39TND-N210A size: 238.47 GiB
ID-3: /dev/sdc type: USB vendor: Samsung model: Type-C size: 119.51 GiB
Partition:
ID-1: / size: 117.13 GiB used: 15.72 GiB (13.4%) fs: ext4 dev: /dev/sdc1
Sensors:
System Temperatures: cpu: 42.0 C mobo: 27.8 C
Fan Speeds (RPM): N/A
Info:
Processes: 243 Uptime: 3m Memory: 7.67 GiB used: 958.6 MiB (12.2%)
Init: systemd runlevel: 5 Compilers: gcc: 7.3.0 Shell: bash v: 4.4.19
inxi: 3.0.27

[decros]

moises@moises-Swift-SF315-52:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC256 Analog [ALC256 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
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 0: PCH [HDA Intel PCH], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 10: HDMI 4 [HDMI 4]
Subdevices: 1/1
Subdevice #0: subdevice #0
moises@moises-Swift-SF315-52:~$

[decros]

moises@moises-Swift-SF315-52:~$ dmesg | grep snd
[ 6.371171] snd_hda_intel 0000:00:1f.3: enabling device (0000 -> 0002)
[ 6.371360] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 6.425425] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC256: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
[ 6.425429] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
[ 6.425431] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
[ 6.425432] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
[ 6.425433] snd_hda_codec_realtek hdaudioC0D0: inputs:

[MrEen]

Hi again decros.

The very first thing I think you should do is upgrade your kernel via the Update Manager to the 4.18 series. You system is quite new and could possibly benefit from this newer kernel.

After the kernel upgrade, reboot then run dmesg | grep snd again and see if anything has been added to inputs:

If everything is still the same, we'll try some alsa-base.conf edits to see if we can get it recognized.

Good luck.

[MrEen]

Sorry decros. I have found the reason for this and at present there is no solution. See my post here: viewtopic.php?f=49&t=279424&p=1576319#p1576319

My suggestion would be to get a USB microphone. There shouldn't be any problem with that.

[m1sun0]

Just confirmed sound card model supported by Linux Kernel, there are support for ALC256 driver derivative, except for Acer Swift. Since the driver itself is existing, technically Acer could just provide pinout mapping for the driver.

Alternatively we could attempt to change the driver to old alc255-acer. Even I'm not willing to do that, easier to buy new new mic.