nVidia GK106GLM [Quadro K2100M] [10de:11fc] No audio output on HDMI / DP port with nvidia-331

[Po-Hsu Lin]

CID: 201305-13527 Dell Precision M4800

There is no HDMI / DP audio output availlable with nvidia-331 driver.

Steps:
1. Installl 14.04.1 + nvidia-331, reboot
2. Connect to a DP / HDMI monitor, try to change the output to it.

Expected result:
* After connect to a HDMI / DP monitor, there should be an extra audio output available.

Actual result:
* No extra audio output available.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-32-generic 3.13.0-32.57 [modified: boot/vmlinuz-3.13.0-32-generic]
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ubuntu 4041 F.... pulseaudio
 /dev/snd/controlC0: ubuntu 4041 F.... pulseaudio
CRDA:
 country TW:
  (2402 - 2472 @ 40), (3, 27)
  (5270 - 5330 @ 40), (3, 17), DFS
  (5735 - 5815 @ 40), (3, 30)
CurrentDesktop: Unity
Date: Wed Oct 8 05:38:15 2014
HibernationDevice: RESUME=UUID=46ed949d-eff8-48e9-b337-6425f480cf12
InstallationDate: Installed on 2014-10-08 (0 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: Dell Inc. Precision M4800
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic.efi.signed root=UUID=e7f55d08-44a4-447e-8fc6-563864d60df4 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-32-generic N/A
 linux-backports-modules-3.13.0-32-generic N/A
 linux-firmware 1.127.5
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/02/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0FVDR2
dmi.board.vendor: Dell Inc.
dmi.board.version: X02
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd01/02/2014:svnDellInc.:pnPrecisionM4800:pvr01:rvnDellInc.:rn0FVDR2:rvrX02:cvnDellInc.:ct9:cvr:
dmi.product.name: Precision M4800
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Po-Hsu Lin (cypressyew)]

This also applies to nvidia-331-updates

[Anthony Wong (anthonywong)]

@Po-Hsu
Can you confirm if this issue happens when the notebook is using AC, DC or both?

[Po-Hsu Lin (cypressyew)]

Re-tested with 3.13.0-85 + nvidia 352, there is no HDMI audio output in both AC / DC mode.

[Alberto Milone (albertomilone)]

Does the hdmi audio work when the nvidia driver is not installed?

All I can see is the device from intel:

[ 14.115647] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[ 14.115670] snd_hda_intel 0000:00:03.0: enabling device (0000 -> 0002)
[ 14.115769] HDA driver get symbol successfully from i915 module
[ 14.116035] snd_hda_intel 0000:00:1b.0: irq 49 for MSI/MSI-X
[ 14.123393] snd_hda_intel 0000:00:03.0: irq 50 for MSI/MSI-X
[ 14.216193] input: HDA Intel HDMI HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:03.0/sound/card0/input14
[ 14.216277] input: HDA Intel HDMI HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:03.0/sound/card0/input13
[ 14.216322] input: HDA Intel HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.0/sound/card0/input12

[Po-Hsu Lin (cypressyew)]

This can't be verified without the nvidia driver, Xorg will crash when connecting an external HDMI monitor.

I checked with the Power-saving profile with nvidia driver installed, external monitor does not work (no signal, and it's not detected in the Display utility).