** Changed in: alsa-driver (Ubuntu)
Status: Expired => Confirmed
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https://bugs.launchpad.net/bugs/1377653
Title:
HDMI sound output not detected / NVIDIA optimus laptop
Status in alsa-driver package in Ubuntu:
Confirmed
Bug description:
Hi,
not sure if this is an alsa or nvidia/nouveau bug.
HDMI audio output doesn't appear in sound settings output panel.
Audio works well on internal speakers, but it seems there is no way to make
it output to hdmi...
The laptop has optimus NVIDIA+Intel.
The behaviour is the same with nouveau or nvidia proprietary driver.
Please let me know if further testing is required
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
Uname: Linux 3.13.0-36-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sam 2295 F.... pulseaudio
CurrentDesktop: Unity
CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order
/var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission
denied
Date: Sun Oct 5 17:05:35 2014
InstallationDate: Installed on 2014-04-21 (166 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Title: PCI/internal sound card not detected
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/02/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: N56VZ.215
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: N56VZ
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrN56VZ.215:bd11/02/2012:svnASUSTeKCOMPUTERINC.:pnN56VZ:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN56VZ:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: N56VZ
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
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