There is no 5.1 OVER HDMI on the HP PAVILION DV7 only two channel stereo!!!

Dear HP
I have a Pavilion dv7 laptop.
I am able to connect my laptop via HDMI to my Samsung 55 LED. Video transfer is in HD. Sound is also transmitted but only in 2 channel format rather than 5.1 channel format. In the sound settings via control panel I have tried to reconfigure but there is only a 2ch and no 5.1ch setting. The same is the case in the 'Speakers and Headphones' (IDT High Definition Audio CODEC) setting
The 5.1ch output setting should be present as Windows 7 professional is compatible with this as should be my laptop, and my TV has an inbuilt Dolby Digital processor which conveys 5.1Ch sound to my home cinema unit.
My home cinema system DOES support and decode Dolby & DTS 5.1. This is connected to my TV via optical cable.
TV transmissions from Freesat that are in Dolby Digital 5.1 do output correctly in 5.1 via my home cinema system, this is why I know for a fact that my TV DOES output in Dolby Digital 5.1. There is a light on my Home cinema system which confirm the inputted sound is 2ch or 5.1ch.
There is no error with my TV or Home cinema System - there is a problem with my Pavilion laptop failing to output 5.1.
Please help!
Many thanks

Hi,
DV7 is a series of dozens if not hundreds of models, what is yours ? Please bear in mind normally HDMI sound on computers go from video cards, not "sound" cards.
Regards,
BH
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5.1 Surround over HDMI: Solve one problem, another rises up.

UPDATE 1: After a good night's sleep, and after doing a bit more reading on alsa-project.org (big props to this page), I managed to get a much better ~/.asoundrc together. It solves all my problems, and I can do everything I need. I've preserved the post below in case anyone else runs into these issues, and I'll post my solution as a response to this post.
UPDATE 2: Looks like I celebrated too early. Got more strange problems. Screw it, I'm going back to PulseAudio. I just wrote a wrapper script to kill and restart Pulse for applications that really, really need ALSA.
Okay. I've almost completely worn out my fingers trying to get this working. I feel like I'm playing Whack-a-Mole. This is a bit of a lengthy post, but I'll try my best to describe every problem I've encountered in as much detail as I can, followed by the solutions I found, followed by the problems each solution brought with it. By going through everything this way, mole by mole, hopefully it'll be easy to follow along and help me come to a universally working solution.
Summarized Version of Problems:
5.1 surround works only on specific applications which are robust enough to allow me to manually specify audio output options, and only if ALSA isn't configured at all
once I've configured ALSA, sound works on every application, but it's all downmixed to 2.0 stereo from this point on
installing PulseAudio lets me choose 5.1 surround as a default, but brings with it its own problems and drawbacks, namely the lack of passthrough support for encoded streams
Long-Winded Version:
I have my computer connected over HDMI to an AVR with a 5.1 surround speaker system. At first, I didn't have anything configured in ~/.asoundrc (or its global equivalent, /etc/asound.conf). Neither file existed, so everything was running off defaults. I got the name and device number of my card from aplay, ran speaker-test and played a six-channel test file in mplayer.
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
hdmi:CARD=HDMI,DEV=0
HDA Intel HDMI, HDMI 0
HDMI Audio Output
$ speaker-test -Dhdmi -c6
speaker-test 1.0.28
Playback device is hdmi
Stream parameters are 48000Hz, S16_LE, 6 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 64 to 349504
Period size range from 32 to 174752
Using max buffer size 349504
Periods = 4
was set period_size = 174752
was set buffer_size = 349504
0 - Front Left
4 - Front Center
1 - Front Right
3 - Rear Right
2 - Rear Left
5 - LFE
Time per period = 21.868405
$ mplayer -ao alsa:device=hdmi -channels 6 Nums_5dot1_24_48000.wav
MPlayer SVN-r37224 (C) 2000-2014 MPlayer Team
210 audio & 441 video codecs
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing Nums_5dot1_24_48000.wav.
libavformat version 55.33.100 (internal)
Audio only file format detected.
Load subtitles in ./
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 6 ch, s24le, 6912.0 kbit/100.00% (ratio: 864000->864000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
[AO_ALSA] Format s24le is not supported by hardware, trying default.
AO: [alsa] 48000Hz 6ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A: 8.6 (08.5) of 9.0 (09.0) 0.3%
Exiting... (End of file)
Everything seemed well, all six channels played from the correct location on both tests, but I did realize that the device number of the card was 3, not 0. A lot of applications that aren't as configurable expect the default card/device to be set properly, and audio won't work in those applications without specifying that in ALSA's configuration. Knowing this, I set the following in my ~/.asoundrc:
pcm.!default {
type hw
card HDMI
device 3
ctl.!default {
type hw
card HDMI
device 3
This, however, ended up causing more problems. Oh, it made sound work on everything by default after that, but only for one application at a time! That surpised me, as I thought ALSA's big advantage over OSS is that it can multitask. Running the speaker-test the way I did earlier turned out fine, but when I tried playing that test file in mplayer, things got weird again. Here's the output from mplayer:
$ mplayer -ao alsa -channels 6 Nums_5dot1_24_48000.wav
MPlayer SVN-r37224 (C) 2000-2014 MPlayer Team
210 audio & 441 video codecs
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing Nums_5dot1_24_48000.wav.
libavformat version 55.33.100 (internal)
Audio only file format detected.
Load subtitles in ./
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 6 ch, s24le, 6912.0 kbit/100.00% (ratio: 864000->864000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
[AO_ALSA] alsa-lib: pcm_hw.c:1557:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-2): No such file or directory
[AO_ALSA] Playback open error: No such file or directory
Failed to initialize audio driver 'alsa'
Could not open/initialize audio device -> no sound.
Audio: no sound
Video: no video
Exiting... (End of file)
Why the hell is it looking for pcmC0D0p? It should be looking at pcmC0D3p. Did it not get the memo from ~/.asoundrc? Urgh.
I've also tried '-af channels=6' in place of '-channels 6' but the same result happened. It does the same thing without the '-ao alsa' option, I just specified it to trim down the output, so that I wouldn't be copying and pasting all kinds of other errors about not finding OSS or JACK or other things I don't have installed.
If I symlink /dev/snd/pcmC0D0p to /dev/snd/pcmC0D3p, it'll fix the problem, but that feels like one ugly kludge. I'd have to do it again over and over every time I reboot, too.
Not sure if this would help matters or not, but if anyone knows how to change my card's device number from 3 to 0, I'd like to try that as well, but I'm not sure how to do that sort of thing. I'm just guessing it might be worth trying, since everything looks for card0/device0 by default, and that kludge I tried earlier did have an effect, so maybe if we can just switch those device numbers with each other, everything would work smoothly without having to force anything through ALSA's configuration at all. I believe card0/device0 belongs to the Host Bridge... is there a way to have them trade their device numbers for one another's in a safe manner?
I can also get it to play if I specify the device like I did in my first test, using '-ao alsa:device=hdmi', but that defeats the purpose of getting good defaults set if I still have to set everything by hand before I play something. If I try playing the test file without any options, like so:
$ mplayer Nums_5dot1_24_48000.wav
... it will play, but only in two-channel stereo, and the parts that should happen in the center, rear and LFE channels get downmixed into the left and right channels.
I can get it to work in aplay, though! All six channels! Not that I plan on using this as my primary multimedia software.
$ aplay -c6 Nums_5dot1_24_48000.wav
The only solution I found so far that allows me to have 5.1 audio by default is to install the PulseAudio server, which is able to find a sink/source named 'alsa_output.pci-0000_00_03.0.hdmi-surround' and lets me choose that as my default. Only problem with this is that PulseAudio has its own problems.
Aside from the crackling sound issues in some Wine games, Pulse also has a much bigger drawback -- a complete lack of passthrough support, meaning I can't use encoded streams such as Dolby DTS and TrueHD with PulseAudio. I have a Harman/Kardon AVR and I'd like to get my money's worth out of it, so I'd really like to figure out a solution in ALSA without using Pulse at all.
Does anyone know how I can have my cake and eat it, too? I just need 5.1 surround, by default, in ALSA without PulseAudio.
HUGE thanks to anyone who tries to help here. This is really making me sad and frustrated, I've been using Arch for quite a while now and this is the first real big stumper I've come across that forced me to post a thread. Otherwise I've been having a wonderful time.
Edited because I tried something different that removed *some* issues, but the above problems still remain.
Last edited by Rybelda (2014-10-27 22:10:24)

Well, I thought I fixed it doing this...
pcm.!default {
type plug
slave.pcm "dmixer"
pcm.dmixer {
type dmix
ipc_key 1138
ipc_key_add_uid true
slave {
pcm "hw:0,3"
format S32_LE
channels 8
rate 192000
period_size 9600
buffer_size 38400
... but then realized it strangely makes applications that run at 640x480 have no sound at all. No idea why the video resolution is screwing up the sound, but that's what's happening, because if I set the resolution any higher, the sound comes back.
I'm going back to PulseAudio, I feel like ALSA is mocking me. I wrote a wrapper script for the few times where pure, Pulse-less ALSA will be necessary for me. Here it is, in case it helps anyone else. I've tested it with XBMC, it turns off Pulse and allows ALSA to pass through encoded streams unhindered. It also works with some Wine applications that have scratchy audio glitches in Pulse.
#!/bin/bash
echo "autospawn = no" > $HOME/.config/pulse/client.conf
pulseaudio --kill &> /dev/null
"$*"
rm -f $HOME/.config/pulse/client.conf
pulseaudio --start &> /dev/null
I'm removing the SOLVED tag because technically I didn't resolve any of my original issues, I more or less gave up on what I wanted to do and found another way to satisfy my needs, but it still isn't as elegant as I had hoped for. In any case, I'm done with this issue for now and the forseeable near-future, but if anyone has anything further to add, feel free.
Last edited by Rybelda (2014-10-27 22:32:55)

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Thanks for the reply.
Is the T.V. entering standby or powering off after a certain amount of time?
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I agree. It should.
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Ethernet over hdmi?

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speaker-test -c 6
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Here's my soundcards listed with "cat /proc/asound/modules"
1 snd_hda_intel
2 snd_hda_intel
Here is my aplay -L ouput:
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
hdmi:CARD=Generic,DEV=0
HD-Audio Generic, HDMI 0
HDMI Audio Output
sysdefault:CARD=SB
HDA ATI SB, ALC892 Analog
Default Audio Device
front:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
Front speakers
surround40:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=SB,DEV=0
HDA ATI SB, ALC892 Digital
IEC958 (S/PDIF) Digital Audio Output
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speaker-test 1.0.25
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Stream parameters are 48000Hz, S16_LE, 6 channels
Using 16 octaves of pink noise
Channels count (6) not available for playbacks: Invalid argument
Setting of hwparams failed: Invalid argument
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I've been all over the alsa page of the wiki. When I tried the settings under https://wiki.archlinux.org/index.php/Al … DIF_Output they were already correct.
To anyone who's bothered to read all this ( I sorry it's so long I'm just trying to be thorough) Thank you!
If anyone has any clue what I can try to fix this I would be forever grateful.
Edit: Well it looks like all that messing around I did last night trying to fix things only made it worse. Now the sound in XBMC doesn't work either.
Last edited by Zarcjap (2012-03-21 12:33:48)

Hi!
I spent the day asking friend google, browsing the arch wiki, ubuntu wiki and xbmc wiki.
Lastly, I made it work. I have to admit that I don't know why and don't actually understand a thing of what I did, it was trial and error. However, here is what I did:
installed alsa-oss (probably irrelevant)
set the audio output settings in xbmc to "Audio output"="Optical/Coax", "Audio output device"="Defaults" and "Passthrough output device"="hdmi".
used the following as my .asoundrc
pcm.dmixer {
type dmix
slave {
pcm "hw:0,3"
rate 44100
pcm.!default {
type hw
card 1
That's it. In case you are a sound guru willing to share your wisdom or else trying to make it work like I did, you might want some more info. Here you go.
Output of "cat /proc/asound/modules":
0 snd_hda_intel
1 snd_hda_intel
Output of "aplay -L":
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
hdmi:CARD=Generic,DEV=0
HD-Audio Generic, HDMI 0
HDMI Audio Output
sysdefault:CARD=SB
HDA ATI SB, ALC892 Analog
Default Audio Device
front:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
Front speakers
surround40:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=SB,DEV=0
HDA ATI SB, ALC892 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=SB,DEV=0
HDA ATI SB, ALC892 Digital
IEC958 (S/PDIF) Digital Audio Output
Output of "aplay -l":
**** List of PLAYBACK Hardware Devices ****
card 0: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: SB [HDA ATI SB], device 0: ALC892 Analog [ALC892 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: SB [HDA ATI SB], device 1: ALC892 Digital [ALC892 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
Hope it helps anyone out there. In case I stumble upon further problems regarding this hack, I'll post them here.
Regards
lightandshadow

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daf art

Hello everyone,
I was curious to know if it is possible to use a setup where I use an NVIDIA card to send display over HDMI to my receiver and at the same time I use an internal ATI chip to send audio over HDMI to the same receiver.
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thanks in advance,
René

Sorry, but your Mac doesn't send sound over HDMI, only mid-2010 and later MBP's send sound (and even then some require different adapters). Yours is a 2009 MBP, so only video will go over the HDMI cable. You will need to run audio from the audio out to your TV or digital audio out from your optical audio out to your receiver.

Using Acrobat 9 and suddenly there is no selected page range in the print box. Only selected PDF files or all PDF files. Am I doing something wrong? I need to print only three pages from the document

There is no selected print page range in the print box. Only selected PDF file and all PDF files. Any suggestions?

Well, I looked for where to delete this but didn't see it.
NEVERMIND; I forced iPhoto to quit and restarted and everything seems fine.
BTW, I did get one thing wrong. When I looked at both iPhoto libraries with FINDER, the active one and the archived one both showed content as far as file size goes.
It was because I was viewing the files through Adobe Bridge that it was showing 0 GB's; for whatever reason.

Why doesn't the MBPr support 2560x1440 over HDMI with OSX when Windows7 (bootcamp) supports it just fine?

I purchased a 2013 MBPr 15" (the first Mac I've ever owned btw) and so far have enjoyed the experience. I purchased a large 27" high resolution 2560x1440 non-Apple display which I planned on using HDMI output for, since HDMI has no problem supporting this resolution. After receiving this display yesterday I came to the sad realization that OSX does not support 2560x1440 over HDMI. However, under further investigation I found that Windows7 in Bootcamp on the same machine will beautifully display the full 2560x1440 over HDMI.
This means that OSX is the problem, and not the MBPr since Windows7 displayed the full resolution with no issue. If the hardware can support it, why would Apple disable it in the software? Is this just their way of forcing people to use DisplayPort? Or is there hope for them fixing this in future versions?

OK. No reason to be playing games here. Just surprised that this issue hasn't been brought up here on the community boards as well. Here's the simple solution
Steve
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Re: Why can't my Belkin Thunderbolt Express Dock operate my desktop speakers?
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07-17-2014 07:09 PM
After reaching a Level III technician in Belkin customer support today and having spent approximately 4-5 person hours on this issue, we figured out that the Sound/Output preferences in the Apple System Preferences should not be set to "Internal Speakers" but rather set to "USB PnP Sound Device".
Worked like a charm. Simple, elegant solution to a real problem, one likely to be encountered by 90% of the people who buy a Belkin Thunderbid Express Dock off the shelves of any Apple Store to use with a current generation Apple laptop or desktop computer.
But the Level III Belkin technician admmtted that this critical little piece of simple, straightforward information should have been readily available to their Level 1 techies who began helping me 5 person hours ago. Would even have saved Balkin loads of customer service support time.
And so the saga ends
Belkin owes me for helping them learn this precious lesson.
Steve

There is no 5.1 OVER HDMI on the HP PAVILION DV7 only two channel stereo!!!

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