[ThinkPad X1 Carbon 6th] Crackling sound with HDMI

[Edouard Richard]

Hello,

I have a new laptop and I cannot manage to have a clean and stable sound with HDMI.
It happens every time I play a track on Spotify (desktop and web), sometimes from a VLC radio or a youtube video, never from a video with VLC yet.

I'm attaching a record of what I hear when I play a track from Spotify.

I created two reports.

One during a Spotify playing, when it is crackling and after the sound started to crackle everywhere:
http://alsa-project.org/db/?f=4e7d724718a48179fa2f3740d5f3e634ad75def9

Another after a fresh reboot, where the sound is correct with at least YouTube:
http://alsa-project.org/db/?f=2ec68f888bb93a0de648d48fd720f54cee644564

Just after this last report, the sound is still crackling with Spotify and VLC radio. Not with Youtube.

A diff on theses files gives some differences I find suspect. Are there expected ?

Do you have an idea where the problem comes from ?

Thank you for your support !

Edouard
---
ProblemType: Bug
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: edouard 1677 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 19.04
InstallationDate: Installed on 2019-05-28 (0 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
Package: pulseaudio 1:12.2-2ubuntu3
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6
Tags: disco
Uname: Linux 5.0.0-15-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 04/20/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: N23ET63W (1.38 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20KHCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN23ET63W(1.38):bd04/20/2019:svnLENOVO:pn20KHCTO1WW:pvrThinkPadX1Carbon6th:rvnLENOVO:rn20KHCTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Carbon 6th
dmi.product.name: 20KHCTO1WW
dmi.product.sku: LENOVO_MT_20KH_BU_Think_FM_ThinkPad X1 Carbon 6th
dmi.product.version: ThinkPad X1 Carbon 6th
dmi.sys.vendor: LENOVO
modified.conffile..etc.pulse.default.pa: [modified]
mtime.conffile..etc.pulse.default.pa: 2019-05-28T23:16:01.413832

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:

apport-collect 1830867

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Edouard Richard (vied12)]

apport information

[Edouard Richard (vied12)]

apport information

[Edouard Richard (vied12)]

apport information

[Edouard Richard (vied12)]

apport information

[Edouard Richard (vied12)]

apport information

[Edouard Richard (vied12)]

apport information

[Daniel van Vugt (vanvugt)]

Thanks.

This may be related to bug 1827440, which is the same hardware but sounds like a slightly different problem.

[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 1830867

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.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]