Ubuntu
pulseaudio package

Regression in sound quality on 13.04 as compared to 12.04 (HDMI over DP) on Thinkpad W510

Bug #1174696 reported by Zygmunt Krynicki on 2013-04-30

20

This bug affects 4 people

Affects		Status	Importance	Assigned to	Milestone
	pulseaudio (Ubuntu)	Expired	Undecided	Unassigned

Bug Description

This laptop is using a DP to HDMI adapter, connected to a HDMI monitor. Sound quality on 12.04 is perfect, sound quality on 13.04 is poor (cracking and "metallic" feeling)

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: pulseaudio 1:3.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.8.0-19.29lp1169984v201304261303-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: zyga 1668 F.... pulseaudio
/dev/snd/controlC0: zyga 1668 F.... pulseaudio
/dev/snd/pcmC0D0c: zyga 1668 F...m pulseaudio
Date: Tue Apr 30 12:24:59 2013
InstallationDate: Installed on 2013-04-29 (0 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/03/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 6NET84WW (1.45 )
dmi.board.name: 4318CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6NET84WW(1.45):bd10/03/2012:svnLENOVO:pn4318CTO:pvrThinkPadW510:rvnLENOVO:rn4318CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4318CTO
dmi.product.version: ThinkPad W510
dmi.sys.vendor: LENOVO

Tags:

Revision history for this message

Zygmunt Krynicki (zyga) wrote on 2013-04-30:

#1

AlsaInfo.txt Edit (42.2 KiB, text/plain; charset="utf-8")
BootDmesg.txt Edit (69.0 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (3.6 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (3.8 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (319 bytes, text/plain; charset="utf-8")
PulseList.txt Edit (24.0 KiB, text/plain; charset="utf-8")

Revision history for this message

Zygmunt Krynicki (zyga) wrote on 2013-04-30:

#2

I've tried all workarounds listed on https://wiki.ubuntu.com/Audio/PositionReporting without success

Revision history for this message

Raymond (superquad-vortex2) wrote on 2013-05-02:

#3

17.431110] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:03.0/0000:01:00.1/sound/card1/input13
[ 17.431350] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:03.0/0000:01:00.1/sound/card1/input14
[ 17.431568] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:03.0/0000:01:00.1/sound/card1/input15
[ 17.431833] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.0/0000:01:00.1/sound/card1/input16
[ 17.557273] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 145

Revision history for this message

Zygmunt Krynicki (zyga) wrote on 2013-05-02:

#4

Interesting find, I'll check if I have the same warning on precise. Could this be the fault of the DP-to-HDMI adapter?

Revision history for this message

Zygmunt Krynicki (zyga) wrote on 2013-05-02:

#5

This is alsainfo from the same laptop, with the same DP/HDMI adapter and the same screen as reported above, this time running Ubuntu 12.04: http://www.alsa-project.org/db/?f=05028563518fe47e02249fe0a1fbad8b5f786386

Revision history for this message

Launchpad Janitor (janitor) wrote on 2013-06-13:

#6

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in pulseaudio (Ubuntu):
status:	New → Confirmed

Revision history for this message

Ian D. Rossi (ian-d-rossi) wrote on 2013-06-13:

#7

I have a similar problem, but not with HDMI. The bug I submitted may be a duplicate, but I don't think so: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1190700

Revision history for this message

ronnie_t (ronnietee) wrote on 2013-07-23:

#8

I had a similar problem (clipping sound in 13.04, but not in 12.04) and I upgraded the drivers from nouveau to the nvidia drivers (from additional drivers)

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2017-05-12:

#9

Thank you for reporting this bug to Ubuntu.
Ubuntu 13.04 (raring) reached end-of-life on January 27, 2014.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test.

Changed in pulseaudio (Ubuntu):
status:	Confirmed → Incomplete

Revision history for this message

Launchpad Janitor (janitor) wrote on 2017-07-12:

#10

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

Changed in pulseaudio (Ubuntu):
status:	Incomplete → Expired

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