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I just replaced my GTS240 with a GT630. I could get HDMI audio output from GTS240, but there is no audio device detected on GT630. (Note that GT630's HDMI audio works on windows 7)

The GTS240 was connected through SPDIF, but the GT630 has internal HDMI audio support.

This is the lspci output

01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 630] (rev a1)

I am using version 304.88:

[   18.848686] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  304.88  Wed Mar 27 14:26:46 PDT 2013

The gnome sound config tool shows a "S/PDIF Digital Output" that looks like my old GTS240 hdmi audio. So, I'm wondering if there is any way to purage all the previous audio configs and autoconfig everything from scratch?

Update: Is this bug relevant to my problem? http://permalink.gmane.org/gmane.linux.alsa.devel/106245

Some more info: $ uname -a Linux HomeUbuntu 3.8.0-19-generic #30-Ubuntu SMP Wed May 1 16:35:23 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: MID [HDA Intel MID], device 0: ALC887 Analog [ALC887 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: MID [HDA Intel MID], device 1: ALC887 Digital [ALC887 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: MID [HDA Intel MID], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
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