OP had also tested this with linux-image-generic-hwe-18.04 / linux- image-4.18.0-20-generic, where dmesg looked very similar to that of this hwe-18.04-edge kernel.
Gabriele: (1) Please do as discussed in comment 2. (2) Please also re-run alsa-info as discussed at https://wiki.ubuntu.com/Audio/AlsaInfo and attach the output as a file to this bug report. (3) These commands (3 lines total) would create an ALSA profile for your hardware, and may provide audio after rebooting: sudo mkdir -p /usr/share/alsa/ucm/bytcr-rt5651 && \ wget -qO- 'https://git.alsa-project.org/?p=alsa-lib.git;a=blob_plain;f=src/conf/ucm/bytcr-rt5651/bytcr-rt5651.conf' | sudo tee /usr/share/alsa/ucm/bytcr-rt5651/bytcr-rt5651.conf >/dev/null && \ wget -qO- https://git.alsa-project.org/?p=alsa-lib.git;a=blob_plain;f=src/conf/ucm/bytcr-rt5651/HiFi.conf | sudo tee /usr/share/alsa/ucm/bytcr-rt5651/HiFi.conf >/dev/null To undo these changes, please run this command: sudo rm -r /usr/share/alsa/ucm/bytcr-rt5651 Please report back whether this helped. If so, please repeat (1) and (2). -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1831301 Title: sound doesn't works in both kernel. no one cards is recognize by system- Status in linux package in Ubuntu: Incomplete Bug description: . ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: alsa-base (not installed) ProcVersionSignature: Ubuntu 5.0.0-15.16~18.04.1-generic 5.0.6 Uname: Linux 5.0.0-15-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 Date: Sat Jun 1 04:26:10 2019 InstallationDate: Installed on 2019-04-03 (58 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=it_IT.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.modprobe.d.alsa-base.conf: 2019-05-31T22:19:11.232515 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1831301/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp