sortie fictive

Please follow https://help.ubuntu.com/community/SoundTroubleshootingProcedure especially step 1 and first half of step 3

--2020-12-11 13:10:19-- http://www.alsa-project.org/alsa-info.sh
Resolving www.alsa-project.org (www.alsa-project.org)... 207.180.221.201
Connecting to www.alsa-project.org (www.alsa-project.org)|207.180.221.201|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://www.alsa-project.org/alsa-info.sh [following]
--2020-12-11 13:10:19-- https://www.alsa-project.org/alsa-info.sh
Connecting to www.alsa-project.org (www.alsa-project.org)|207.180.221.201|:443... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://git.alsa-project.org/?p=alsa-utils.git;a=blob_plain;f=alsa-info/alsa-info.sh [following]
--2020-12-11 13:10:19-- https://git.alsa-project.org/?p=alsa-utils.git;a=blob_plain;f=alsa-info/alsa-info.sh
Resolving git.alsa-project.org (git.alsa-project.org)... 207.180.221.201
Connecting to git.alsa-project.org (git.alsa-project.org)|207.180.221.201|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/x-sh]
Saving to: ‘alsa-info.sh’

alsa-info.sh [ <=> ] 27.20K --.-KB/s in 0s

2020-12-11 13:10:19 (137 MB/s) - ‘alsa-info.sh’ saved [27857]

ALSA Information Script v 0.4.65
--------------------------------

This script visits the following commands/files to collect diagnostic
information about your ALSA installation and sound related hardware.

  dmesg
  lspci
  aplay
  amixer
  alsactl
  rpm, dpkg
  /proc/asound/
  /sys/class/sound/
  ~/.asoundrc (etc.)

See './alsa-info.sh --help' for command line options.

alsactl: save_state:1595: No soundcards found...
cat: /tmp/alsa-info.NGTgXPEEQv/alsactl.tmp: No such file or directory

When I'm running the step 3 part 1, I have this, i think ALSA didn't recognize my soundcards

We need to see the real output of the alsa-info script

alsactl: save_state:1595: No soundcards found...
cat: /tmp/alsa-info.sUIfVoBpkk/alsactl.tmp: No such file or directory
upload=true&script=true&cardinfo=
!!################################
!!ALSA Information Script v 0.4.65
!!################################

!!Script ran on: Fri Dec 11 16:41:35 UTC 2020

!!Linux Distribution
!!------------------

Ubuntu 18.04.5 LTS \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 18.04.5 LTS" NAME="Ubuntu" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 18.04.5 LTS" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" UBUNTU_CODENAME=bionic

!!DMI Information
!!---------------

Manufacturer: LENOVO
Product Name: 82A1
Product Version: Yoga Slim 7 14IIL05
Firmware Version: DHCN27WW
System SKU: LENOVO_MT_82A1_BU_idea_FM_Yoga Slim 7 14IIL05
Board Vendor: LENOVO
Board Name: LNVNB161216

!!ACPI Device Status Information
!!---------------

/sys/bus/acpi/devices/ACPI000C:00/status 15
/sys/bus/acpi/devices/ACPI000E:00/status 15
/sys/bus/acpi/devices/ELAN901C:00/status 15
/sys/bus/acpi/devices/IDEA2002:00/status 15
/sys/bus/acpi/devices/IDEA2004:00/status 15
/sys/bus/acpi/devices/INT0E0C:00/status 15
/sys/bus/acpi/devices/INT33A1:00/status 15
/sys/bus/acpi/devices/INT33D5:00/status 15
/sys/bus/acpi/devices/INT3400:00/status 15
/sys/bus/acpi/devices/INT3403:00/status 15
/sys/bus/acpi/devices/INT3403:01/status 15
/sys/bus/acpi/devices/INT340E:00/status 15
/sys/bus/acpi/devices/INT3455:00/status 15
/sys/bus/acpi/devices/INT3F0D:00/status 15
/sys/bus/acpi/devices/INTC5000:00/status 15
/sys/bus/acpi/devices/LNXPOWER:00/status 1
/sys/bus/acpi/devices/LNXPOWER:01/status 1
/sys/bus/acpi/devices/LNXPOWER:02/status 1
/sys/bus/acpi/devices/LNXPOWER:03/status 1
/sys/bus/acpi/devices/LNXPOWER:04/status 1
/sys/bus/acpi/devices/LNXPOWER:06/status 1
/sys/bus/acpi/devices/MSFT0001:00/status 15
/sys/bus/acpi/devices/PNP0103:00/status 15
/sys/bus/acpi/devices/PNP0C02:02/status 3
/sys/bus/acpi/devices/PNP0C02:04/status 3
/sys/bus/acpi/devices/PNP0C09:00/status 15
/sys/bus/acpi/devices/PNP0C0A:00/status 31
/sys/bus/acpi/devices/PRP00001:00/status 11
/sys/bus/acpi/devices/SYNA2B5A:00/status 15
/sys/bus/acpi/devices/USBC000:00/status 15
/sys/bus/acpi/devices/VPC2004:00/status 15
/sys/bus/acpi/devices/device:19/status 15
/sys/bus/acpi/devices/device:26/status 15
/sys/bus/acpi/devices/device:27/status 15
/sys/bus/acpi/devices/device:28/status 15
/sys/bus/acpi/devices/device:92/status 15
/sys/bus/acpi/devices/device:99/status 15
/sys/bus/acpi/devices/device:9b/status 15

!!Kernel Information
!!------------------

Kernel release: 5.4.0-56-generic
Operating System: GNU/Linux
Architecture: x86_64
Processor: x86_64
SMP Enabled: Yes

!!ALSA Version
!!------------

Driver version: k5.4.0-56-generic
Library version: 1.1.3
Utilities version: 1.1.3

!!Loaded ALSA modules
!!-------------------

!!Sound Servers on this system
!!----------------------------

Pulseaudio:
      Installed - Yes (/usr/bin/pulseaudio)
      Running - Yes

!!Soundcards recognised by ALSA
!!-----------------------------

--- no soundcards ---

!!PCI Soundcards installed in the system
!!--------------------------------------

00:1f.3 Multimedia audio controller [0401]: Intel Corporation Device [8086:34c8] (rev 30)
 Subsystem: Lenovo Device [17aa:3a34]

!!Modprobe options (Sound related)
!!--------------------------------

snd_pcsp: index=-2
snd_usb_audio: index=-2
snd_atiixp_modem: index=-2
snd_intel8x0m: index=-2
snd_via82xx_modem: index=-2
snd_atiixp_modem: index=-2
snd_intel8x0m: index=-2
snd_via82xx_modem: index=-2
snd_usb_audio: index=-2
snd_usb_caiaq: index=-2
snd_usb_ua101: index=-2
snd_usb_us122l: index=-2
snd_usb_usx2y: index=-2
snd_cmipci: mpu_port=0x330 fm_port=0x388
snd_pcsp: index=-2
snd_usb_audio: index=-2

!!Loaded sound module options
!!---------------------------

!!ALSA Device nodes
!!-----------------

crw-rw----+ 1 root audio 116, 1 Dec 11 2020 /dev/snd/seq
crw-rw----+ 1 root audio 116, 33 Dec 11 2020 /dev/snd/timer

!!Aplay/Arecord output
!!--------------------

APLAY

aplay: device_list:270: no soundcards found...

ARECORD

arecord: device_list:270: no soundcards found...

!!Amixer output
!!-------------

!!Alsactl output
!!--------------

--startcollapse--
--endcollapse--

!!All Loaded Modules
!!------------------

ac97_bus
acpi_pad
acpi_tad
acpi_thermal_rel
aesni_intel
aufs
autofs4
binfmt_misc
bluetooth
bnep
bpfilter
br_netfilter
bridge
btbcm
btintel
btrtl
btusb
ccm
cfg80211
cmac
coretemp
crc32_pclmul
crct10dif_pclmul
cros_ec
cros_ec_ishtp
cryptd
crypto_simd
drm
drm_kms_helper
ecc
ecdh_generic
fb_sys_fops
ghash_clmulni_intel
glue_helper
hid
hid_generic
hid_logitech_dj
hid_logitech_hidpp
hid_multitouch
hid_sensor_als
hid_sensor_custom
hid_sensor_hub
hid_sensor_iio_common
hid_sensor_trigger
i2c_algo_bit
i2c_hid
i915
ideapad_laptop
idma64
industrialio
industrialio_triggered_buffer
input_leds
int3400_thermal
int3403_thermal
int340x_thermal_zone
intel_cstate
intel_hid
intel_ish_ipc
intel_ishtp
intel_ishtp_hid
intel_ishtp_loader
intel_lpss
intel_lpss_pci
intel_powerclamp
intel_rapl_common
intel_rapl_msr
intel_soc_dts_iosf
intel_wmi_thunderbolt
ip_tables
iptable_filter
iptable_nat
iwlmvm
iwlwifi
joydev
kfifo_buf
kvm
kvm_intel
ledtrig_audio
libarc4
libcrc32c
llc
lp
mac80211
mac_hid
mc
mei
mei_hdcp
mei_me
nf_conntrack
nf_conntrack_netlink
nf_defrag_ipv4
nf_defrag_ipv6
nf_nat
nfnetlink
nls_iso8859_1
nvme
nvme_core
overlay
parport
parport_pc
pinctrl_icelake
pinctrl_intel
ppdev
processor_thermal_device
rapl
rfcomm
sch_fq_codel
serio_raw
snd
snd_compress
snd_hda_codec
snd_hda_codec_generic
snd_hda_codec_hdmi
snd_hda_codec_realtek
snd_hda_core
snd_hda_ext_core
snd_hda_intel
snd_hwdep
snd_intel_dspcfg
snd_pcm
snd_pcm_dmaengine
snd_rawmidi
snd_seq
snd_seq_device
snd_seq_midi
snd_seq_midi_event
snd_soc_acpi
snd_soc_acpi_intel_match
snd_soc_core
snd_soc_dmic
snd_soc_hdac_hda
snd_soc_hdac_hdmi
snd_sof
snd_sof_intel_byt
snd_sof_intel_hda
snd_sof_intel_hda_common
snd_sof_intel_ipc
snd_sof_pci
snd_sof_xtensa_dsp
snd_timer
soundcore
sparse_keymap
stp
syscopyarea
sysfillrect
sysimgblt
thunderbolt
typec
typec_ucsi
ucsi_acpi
usbhid
uvcvideo
video
videobuf2_common
videobuf2_memops
videobuf2_v4l2
videobuf2_vmalloc
videodev
virt_dma
wmi
wmi_bmof
x86_pkg_temp_thermal
x_tables
xfrm_algo
xfrm_user
xt_MASQUERADE
xt_addrtype
xt_conntrack

!!ALSA/HDA dmesg
!!--------------

[ 0.195255] ACPI: Added _OSI(Linux-Dell-Video)
[ 0.195255] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[ 0.195255] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
--
[ 4.030856] AES CTR mode by8 optimization enabled
[ 4.108668] snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
[ 4.108840] snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
[ 4.125745] input: ELAN901C:00 04F3:2A8A Touchscreen as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-0/i2c-ELAN901C:00/0018:04F3:2A8A.0005/input/input19
--
[ 4.211484] sof-audio-pci 0000:00:1f.3: use msi interrupt mode
[ 4.216079] sof-audio-pci 0000:00:1f.3: hda codecs found, mask 5
[ 4.216082] sof-audio-pci 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
[ 4.218923] fbcon: i915drmfb (fb0) is primary device

!!Packages installed
!!--------------------

ii alsa-oss 1.0.28-1ubuntu1 amd64 ALSA wrapper for OSS applications
ii alsa-tools 1.1.3-1 amd64 Console based ALSA utilities for specific hardware
ii alsa-tools-gui 1.1.3-1 amd64 GUI based ALSA utilities for specific hardware
ii alsa-utils 1.1.3-1ubuntu1 amd64 Utilities for configuring and using ALSA

sorry ^^'

Execute the following command

sudo modprobe -v snd_soc_skl_hda_dsp

What output do you receive?
Does sound work afterwards?

output: insmod /lib/modules/5.4.0-56-generic/kernel/sound/soc/intel/boards/snd-soc-skl_hda_dsp.ko
the sound still doesn't work

Please issue the command

sudo modprobe -v snd_soc_skl_hda_dsp

the re-run the alsa-info script

./alsa-info.sh

and copy/paste the output that you receive now, that we can check.

Additional question:
Did sound already work on this computer?

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