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Old 07-11-10, 02:03 AM   #1
dimm0k
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Join Date: Mar 2004
Posts: 5
Default no audio through HDMI in Linux

I have Slackware 13.1 running on a Lenovo W510 with an nVidia Quadro FX 880M and am trying to get audio output through the Displayport -> HDMI interface in Linux. In Windows 7, this works fine so hardware wise things are set up properly.

I also am running kernel 2.6.34.1 with ALSA 1.0.23. aplay looks to properly detect the HDMI audio out as the following:

aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: HDA Generic [HDA Generic]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: NVIDIA HDMI [NVIDIA HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: NVIDIA HDMI [NVIDIA HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: NVIDIA HDMI [NVIDIA HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0

Whenever I play audio, it is coming out of the notebook's speakers rather than the speakers connected to the monitor; speakers are actually part of the monitor. In KDE's system settings for multimedia, there's a test option for output devices. The one for HDA Intel works fine and plays through the notebook's speakers. Running the test for the HDA NVidia yields no sound whatsoever. I feel like I am missing something... any suggestions?
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