Thank you for your answer !
I couldn't do it without help because I know nothing about computers ...
A friend of mine help me on the phone :
For your first question (packages upgraded), you can have a look at
"resultat.txt"
the second one (journalctl -b 0) : "resultat2.txt"
(documents you will find in attachment)

I also forgot to tell two other defects in addition to the "no sound"
problem :
- I can't move a file normally with the pad ; the only way is to cut and
paste
- I can't read the name of a doc when it's too long ; the only way I found
is to open the command "rename"

Thanks  a lot for your help,
Lucile Couffinhal

Le lun. 19 oct. 2020 à 11:40, Sebastien Bacher <email address hidden>
a écrit :

> Thank you for your bug report. What packages did you upgrade exactly?
> (you can find the record in /var/log/apt
>
> Could include the out of this command?
> $ journalctl -b 0
>
> ** Changed in: alsa-driver (Ubuntu)
>        Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1900133
>
> Title:
>   PCI/no sound at all since last updating
>
> Status in alsa-driver package in Ubuntu:
>   Incomplete
>
> Bug description:
>   My last updating a few hours ago was quite different than usual.
>   Since then, many things are not working properly on my computer :
>   - my desktop is very strange (files have lost their appearance or
> doesn't appear at all)
>   -there is no more sound at all : if I try to play a mp3 file or on the
> internet
>   (I checked the settings of course)
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 20.04
>   Package: alsa-base 1.0.25+dfsg-0ubuntu5
>   ProcVersionSignature: Ubuntu 5.4.0-51.56-generic 5.4.65
>   Uname: Linux 5.4.0-51-generic x86_64
>   NonfreeKernelModules: nvidia_modeset nvidia
>   ApportVersion: 2.20.11-0ubuntu27.9
>   Architecture: amd64
>   AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
> '/dev/snd/controlC0', '/dev/snd/hwC0D3', '/dev/snd/hwC0D0',
> '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p',
> '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
>   CasperMD5CheckResult: skip
>   CurrentDesktop: ubuntu:GNOME
>   Date: Fri Oct 16 13:28:11 2020
>   InstallationDate: Installed on 2015-07-16 (1918 days ago)
>   InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
>   PackageArchitecture: all
>   ProcEnviron:
>    PATH=(custom, no user)
>    XDG_RUNTIME_DIR=<set>
>    LANG=fr_FR.UTF-8
>    SHELL=/bin/bash
>   SourcePackage: alsa-driver
>   Symptom: audio
>   Title: PCI/internal sound card not detected
>   UpgradeStatus: Upgraded to focal on 2020-10-16 (0 days ago)
>   dmi.bios.date: 12/14/2011
>   dmi.bios.vendor: Phoenix Technologies Ltd.
>   dmi.bios.version: 03QA
>   dmi.board.asset.tag: Base Board Asset Tag
>   dmi.board.name: 300E4A/300E5A/300E7A/3430EA/3530EA
>   dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
>   dmi.board.version: FAB1
>   dmi.chassis.asset.tag: Asset Tag
>   dmi.chassis.type: 9
>   dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
>   dmi.chassis.version: 0.1
>   dmi.modalias:
> dmi:bvnPhoenixTechnologiesLtd.:bvr03QA:bd12/14/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pn300E4A/300E5A/300E7A/3430EA/3530EA:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rn300E4A/300E5A/300E7A/3430EA/3530EA:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
>   dmi.product.family: HuronRiver System
>   dmi.product.name: 300E4A/300E5A/300E7A/3430EA/3530EA
>   dmi.product.sku: System SKUNumber
>   dmi.product.version: 0.1
>   dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1900133/+subscriptions
>