Verifying the Alsa setting as according to the nvidia troubleshooting guide: ftp://download.nvidia.com/XFree86/gpu-hdmi-audio-document/gpu-hdmi-audio.html
Everything looks good here:
# lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 05)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b5)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b5)
00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b5)
00:1c.6 PCI bridge: Intel Corporation 82801 PCI Bridge (rev b5)
00:1c.7 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 8 (rev b5)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation P67 Express Chipset Family LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2)
01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1)
03:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
05:00.0 SATA controller: JMicron Technology Corp. JMB362 SATA Controller (rev 10)
06:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)
07:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 01)
08:02.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8110SC/8169SC Gigabit Ethernet (rev 10)
08:03.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller (rev c0)
09:00.0 SATA controller: Marvell Technology Group Ltd. 88SE9172 SATA 6Gb/s Controller (rev 11)
…and here:
~> cat /proc/asound/card1/codec#1
Codec: Nvidia GPU 0b HDMI/DP
Address: 1
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x10de000b
Subsystem Id: 0x10de0101
Revision Id: 0x100200
No Modem Function Group found
Default PCM:
rates [0x0]:
bits [0x0]:
formats [0x0]:
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x04 [Audio Output] wcaps 0x72b1: 8-Channels Digital Stripe CP
Converter: stream=5, channel=0
Digital: Enabled
Digital category: 0x0
PCM:
rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
bits [0xe]: 16 20 24
formats [0x5]: PCM AC3
Unsolicited: tag=00, enabled=0
Node 0x05 [Pin Complex] wcaps 0x407381: 8-Channels Digital CP
Control: name="HDMI/DP,pcm=7 Jack", index=0, device=0
Control: name="IEC958 Playback Con Mask", index=1, device=0
Control: name="IEC958 Playback Pro Mask", index=1, device=0
Control: name="IEC958 Playback Default", index=1, device=0
Control: name="IEC958 Playback Switch", index=1, device=0
Control: name="ELD", index=0, device=7
Pincap 0x09000094: OUT Detect HBR HDMI DP
Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x1, Sequence = 0x0
Pin-ctls: 0x00:
Unsolicited: tag=01, enabled=1
Connection: 1
0x04
…and here as well:
~> cat /proc/asound/card1/eld#1.0
monitor_present 1
eld_valid 1
monitor_name SAMSUNG
connection_type HDMI
eld_version [0x2] CEA-861D or below
edid_version [0x3] CEA-861-B, C or D
manufacture_id 0x2d4c
product_id 0x32e
port_id 0x20000
support_hdcp 0
support_ai 0
audio_sync_delay 0
speakers [0x1] FL/FR
sad_count 1
sad0_coding_type [0x1] LPCM
sad0_channels 2
sad0_rates [0xe0] 32000 44100 48000
sad0_bits [0xe0000] 16 20 24
However, when I got to the next step of checking the dmesg for HDMI recognition, I didn’t see anything. According to the writeup, this seems to be critical that something shows up here:
These messages are triggered when the NVIDIA binary X driver starts driving a signal to an attached HDMI monitor, which includes writing PD/ELD information into the audio hardware. The writes trigger the audio controller to generate a UR message. When the ALSA driver processes the UR message, it prints the messages to the kernel log.
I did verify that the interface is unmuted. So again I’m at a bit of a loss… if dmesg doesn’t detect it, I’d take a guess that something isn’t right with the compiled kernel or some other handler… thoughts?