Sound output starts several seconds late using DisplayPort with [AMD/ATI] Tahiti XT HDMI Audio [Radeon HD 7970 Series] [1002:aaa0]
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Triaged
|
Medium
|
Unassigned |
Bug Description
I am using simultaneously :
- an audio headset connected to the analog audio output,
- a DisplayPort cable to connect my display to my 'AMD Tahiti XT [Radeon HD 7970 ...]' graphics + sound card.
Using the 'Sound' panel of 'gnome-
- If I choose the 'Line Out - Built-in Audio' device, the sound output comes immediately :
For example, inside the 'Test Speakers' window, the correct sound systematically starts as soon as I hit any 'Test' button (under 'Front Left' or 'Front Right').
- But if I choose the 'HDMI / DisplayPort - Tahiti XT HDMI Audio [Radeon HD 7970 Series]' device, the sound output starts several seconds LATE :
For example, inside the 'Test Speakers' window, the sound starts at the end of the 2nd time I hit any 'Test' button (under 'Front Left' or 'Front Right'). Then continuous sound is correct and in sync.
But after approx. 10s of silence (no sound to output), new sound output starts several seconds LATE again.
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-
ProcVersionSign
Uname: Linux 4.2.0-14-generic x86_64
ApportVersion: 2.19-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/pcmC0D0c: z_admin 1665 F...m pulseaudio
/dev/snd/
/dev/snd/
CurrentDesktop: GNOME
Date: Thu Oct 8 17:46:05 2015
HibernationDevice: RESUME=
InstallationDate: Installed on 2015-09-27 (10 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20150924)
IwConfig:
enp2s0 no wireless extensions.
lo no wireless extensions.
MachineType: To be filled by O.E.M. To be filled by O.E.M.
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.149
RfKill:
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/07/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2501
dmi.board.
dmi.board.name: M5A97 R2.0
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: To be filled by O.E.M.
dmi.product.
dmi.sys.vendor: To be filled by O.E.M.
description: | updated |
tags: | added: bios-outdated-2603 |
tags: |
added: latest-bios-2603 removed: bios-outdated-2603 |
tags: |
added: kernel-bug-exists-upstream-4.3-rc5 removed: apport-bug |
Changed in linux (Ubuntu): | |
status: | Incomplete → Triaged |
tags: |
added: kernel-bug-exists-upstream-4.5 removed: kernel-bug-exists-upstream-4.3 |
tags: |
added: kernel-bug-exists-upstream-4.7.2 xenial yakkety removed: kernel-bug-exists-upstream-4.5 |
tags: |
added: kernel-bug-exists-upstream-4.8 removed: kernel-bug-exists-upstream-4.7.2 |
tags: |
added: kernel-bug-exists-upstream-4.9 removed: kernel-bug-exists-upstream-4.8 |
tags: |
added: kernel-bug-exists-upstream-4.10 removed: kernel-bug-exists-upstream-4.9 |
tags: |
added: kernel-bug-exists-upstream-4.11 removed: kernel-bug-exists-upstream-4.10 |
tags: | added: zesty |
tags: |
added: artful kernel-bug-exists-upstream-4.13 removed: kernel-bug-exists-upstream-4.11 |
tags: |
added: kernel-bug-exists-upstream-4.15 removed: kernel-bug-exists-upstream-4.13 |
tags: | added: bionic |
tags: |
added: kernel-bug-exists-upstream-4.16 removed: kernel-bug-exists-upstream-4.15 |
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