the sound is distorted when playing via nvidia hdmi

[Marco Giannini]

When playing back the sound via nv hdmi, the sound is distorted on Ubuntu 20.04 LTS with
Kernel 5.4.0-9

No problem if i login with kernel 5.3.0-24-generic

Ubuntu 20.04 LTS
nvidia 440.44
alsa 1.0.25+dfsg-0ubuntu5
pulseaudio 1:13.0-3ubuntu1
kernel 5.4.0-9.12
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu15
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: marco 1792 F.... pulseaudio
 /dev/snd/controlC1: marco 1792 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-01-15 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200106)
IwConfig:
 lo no wireless extensions.

 enp34s0 no wireless extensions.
MachineType: Micro-Star International Co., Ltd MS-7C02
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-9-generic root=UUID=30c539b6-2e84-470d-bac2-486e25129f20 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.4.0-9.12-generic 5.4.3
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-9-generic N/A
 linux-backports-modules-5.4.0-9-generic N/A
 linux-firmware 1.184
RfKill:

Tags: focal
Uname: Linux 5.4.0-9-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 11/07/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3.50
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: B450 TOMAHAWK MAX (MS-7C02)
dmi.board.vendor: Micro-Star International Co., Ltd
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3.50:bd11/07/2019:svnMicro-StarInternationalCo.,Ltd:pnMS-7C02:pvr1.0:rvnMicro-StarInternationalCo.,Ltd:rnB450TOMAHAWKMAX(MS-7C02):rvr1.0:cvnMicro-StarInternationalCo.,Ltd:ct3:cvr1.0:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7C02
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 1.0
dmi.sys.vendor: Micro-Star International Co., Ltd

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1859839/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1859839

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Marco Giannini (marco-giannini)]

apport information

[Marco Giannini (marco-giannini)]

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[Marco Giannini (marco-giannini)]

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[Marco Giannini (marco-giannini)]

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[Marco Giannini (marco-giannini)]

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[Marco Giannini (marco-giannini)]

apport information

[Marco Giannini (marco-giannini)]

apport information

[Marco Giannini (marco-giannini)]

apport information

[Marco Giannini (marco-giannini)]

apport information

[Marco Giannini (marco-giannini)]

apport information

[Marco Giannini (marco-giannini)]

apport information

[Marco Giannini (marco-giannini)]

apport information

[Marco Giannini (marco-giannini)]

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[Marco Giannini (marco-giannini)]

apport information

[Kai-Heng Feng (kaihengfeng)]

Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5-rc6

[Marco Giannini (marco-giannini)]

When installing the kernel via DEB, I have problems configuring the nvidia drivers

[Marco Giannini (marco-giannini)]

With Kernel 5.4.0-12-generic (from repository) the problem seems to be solved.