HDMI sound output on hp 8530w laptop (nvidia quadro fx 770M)

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Hello,

I found an old thread (past june) regarding audio output through hdmi 
with this laptop but it went nowhere

http://article.gmane.org/gmane.linux.alsa.user/32958/

I have the same problem (there's no nvidia hdmi audio output in "aplay 
-L output").

I'm currently running kernel 2.6.31 with alsa 1.0.20, and I also tried 
1.0.21 compiled out of tree.
Where do I have to look/patch to make hdmi sound output work?

I copy here the same details as in the above post:

  # lspci 

00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory 
Controller Hub (rev 07)
00:01.0 PCI bridge: Intel Corporation Mobile 4 Series Chipset PCI 
Express Graphics Port (rev 07)
00:19.0 Ethernet controller: Intel Corporation 82567LM Gigabit Network 
Connection (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #5 (rev 03)
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #6 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI 
Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio 
Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express 
Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express 
Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express 
Port 3 (rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express 
Port 5 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI 
Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller 
(rev 03)
00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI 
Controller (rev 03)
01:00.0 VGA compatible controller: nVidia Corporation Quadro FX 770M 
(rev a1)
03:00.0 Network controller: Intel Corporation Wireless WiFi Link 5300
86:09.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller 
(rev 06)
86:09.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro 
Host Adapter (rev 25)
86:09.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 14)
86:09.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host 
Adapter (rev 14)
86:09.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev bb)
86:09.5 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ff)

# aplay -L
default:CARD=Intel
     HDA Intel, AD198x Analog
     Default Audio Device
front:CARD=Intel,DEV=0
     HDA Intel, AD198x Analog
     Front speakers
surround40:CARD=Intel,DEV=0
     HDA Intel, AD198x Analog
     4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
     HDA Intel, AD198x Analog
     4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
     HDA Intel, AD198x Analog
     5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
     HDA Intel, AD198x Analog
     5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
     HDA Intel, AD198x Analog
     7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
null
     Discard all samples (playback) or generate zero samples (capture)
pulse
     PulseAudio Sound Server

# cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.20.

Bye
-- 
Luca

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