[alsa-devel] HDMI v. ICH8 on Dell XPS M1330
I figured this was more appropriate for devel, and not user. Sorry, if that's wrong.
First, I'm using the 1.0.16 release tarballs. They work better than the in-kernel drivers, as they survive both suspend and hibernate, whereas the kernel drivers do not.
I'm eager to see audio over HDMI working on my Dell XPS M1330. I'm pretty sure that this is /not supported/ at the moment -- if this isn't the case, please stop reading, and let me know the particulars. HDMI seems to be supported noted, but mainly for the ATI chips.
I'm pretty sure the m1330 has a STAC9228 setup. None of the suggested model= module parameters succeeded in getting audio over HDMI, beyond what is autodetected without any parameter specified. model=5stack seems to show a digital SPDIF device added.
If there is anyway I can help the core developers get HDMI audio working, I would be glad to help. I will post all the relevant information I can think of following; please let me know if other information would be helpful. I will gladly turn on any excessive debugging options needed. I am an ALSA n00b, but I will happily do any required work that I can do from this end.
Thanks!
At Wed, 27 Feb 2008 17:41:10 -0500, Armando Di Cianno wrote:
I figured this was more appropriate for devel, and not user. Sorry, if that's wrong.
First, I'm using the 1.0.16 release tarballs. They work better than the in-kernel drivers, as they survive both suspend and hibernate, whereas the kernel drivers do not.
I'm eager to see audio over HDMI working on my Dell XPS M1330. I'm pretty sure that this is /not supported/ at the moment -- if this isn't the case, please stop reading, and let me know the particulars. HDMI seems to be supported noted, but mainly for the ATI chips.
I'm pretty sure the m1330 has a STAC9228 setup. None of the suggested model= module parameters succeeded in getting audio over HDMI, beyond what is autodetected without any parameter specified. model=5stack seems to show a digital SPDIF device added.
The HDMI on HD-audio is currently handled equivalently with SPDIF. So, this device is the HDMI. Try to output this? Don't forget to adjust 'IEC958'-related mixer controls.
If there is anyway I can help the core developers get HDMI audio working, I would be glad to help. I will post all the relevant information I can think of following; please let me know if other information would be helpful.
Use alsa-info.sh. This will contain far more information.
thanks,
Takashi
Actually, I've seen this as well, haven't really started to debug it. We define in the verb table of that system this:
;#21# <STAC9228> (SPDIF Out:Pin48) Jack:Other Digital, Digital, Black, A:A, S:0, Loc:Internal, Sp.8 (Bay, HDMI), Det:No, Imp:No ;#21#Config=0x185610A0
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI devices (that I've tested).
IDT PC Audio Demo/Linux/Test
-----Original Message----- From: alsa-devel-bounces@alsa-project.org [mailto:alsa-devel-bounces@alsa-project.org] On Behalf Of Takashi Iwai Sent: Thursday, February 28, 2008 5:41 AM To: Armando Di Cianno Cc: alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
At Wed, 27 Feb 2008 17:41:10 -0500, Armando Di Cianno wrote:
I figured this was more appropriate for devel, and not user. Sorry,
if
that's wrong.
First, I'm using the 1.0.16 release tarballs. They work better than
the
in-kernel drivers, as they survive both suspend and hibernate, whereas the kernel drivers do not.
I'm eager to see audio over HDMI working on my Dell XPS M1330. I'm pretty sure that this is /not supported/ at the moment -- if this
isn't
the case, please stop reading, and let me know the particulars. HDMI seems to be supported noted, but mainly for the ATI chips.
I'm pretty sure the m1330 has a STAC9228 setup. None of the suggested model= module parameters succeeded in getting audio over HDMI, beyond what is autodetected without any parameter specified. model=5stack seems to show a digital SPDIF device added.
The HDMI on HD-audio is currently handled equivalently with SPDIF. So, this device is the HDMI. Try to output this? Don't forget to adjust 'IEC958'-related mixer controls.
If there is anyway I can help the core developers get HDMI audio working, I would be glad to help. I will post all the relevant information I can think of following; please let me know if other information would be helpful.
Use alsa-info.sh. This will contain far more information.
thanks,
Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
On Thu, 2008-02-28 at 12:40 +0100, Takashi Iwai wrote:
The HDMI on HD-audio is currently handled equivalently with SPDIF. So, this device is the HDMI. Try to output this? Don't forget to adjust 'IEC958'-related mixer controls.
Ahh, okay, so it /should/ work. That is good news.
I've finally had a chance to test tonight. Toggling the IEC958 mute/unmute doesn't seem to change things via a default aplay. Using aplay -D hw:0,1 Noise.wav doesn't work because of set_params errors. Using the plughw form doesn't output audio, but seems to last the correct duratioI can happily try any suggested cvs/subversion/mercurial version, if needed.n of time it should. If aplay -l looks like this:
**** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 1: STAC92xx Digital [STAC92xx Digital] Subdevices: 1/1 Subdevice #0: subdevice #0
... then I'm under the impression that aplay -D plughw:0,1 Noise.wav should work over HDMI, if everything connected correctly, yes?
If there is anyway I can help the core developers get HDMI audio working, I would be glad to help. I will post all the relevant information I can think of following; please let me know if other information would be helpful.
Use alsa-info.sh. This will contain far more information.
Here you go; please find attached, or here: http://pastebin.ca/922821 ; I really do hope this helps.
Again, I'm using the official 1.0.16 tarball release -- this is mainly because it survives a suspend/hibernate, while in-kernel does not.
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI devices (that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is misconfigured, or will simply not work?
I will gladly try any suggestions, thoroughly. Thanks.
At Thu, 28 Feb 2008 20:29:06 -0500, Armando Di Cianno wrote:
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI devices (that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is misconfigured, or will simply not work?
I will gladly try any suggestions, thoroughly. Thanks.
It's a bit hard to judge right now. So far, many HDMI devices seem not working even though it appears set up properly. I've heard that ATI HDMI devices are working, but others are not well, e.g. on some devices only left channel is output and on others silent.
Moreover, I'm not pretty sure whether HDMI is connected from the digital out of STAC codec. On many devices (e.g. ASUS ones), there is a dedicated codec for the HDMI transmitter.
So, right now, it's total lack of (hardware) information, unfortuantely.
We may try some verbs for HDMI that are not used in the current ALSA code, at least. These verbs were extended later...
Takashi
Takashi,
On the XPS M1330 (and XPS M1530) the SPDIF pin of the 9228 is hooked to the HDMI as these laptops were made before the HDMI portion had their own audio codec portion of the transceiver. So technically, it should be pretty simple ;)
IDT PC Audio Demo/Linux/Test
-----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Friday, February 29, 2008 5:57 AM To: Armando Di Cianno Cc: Tellman, Steven; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
At Thu, 28 Feb 2008 20:29:06 -0500, Armando Di Cianno wrote:
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI
devices
(that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is
misconfigured,
or will simply not work?
I will gladly try any suggestions, thoroughly. Thanks.
It's a bit hard to judge right now. So far, many HDMI devices seem not working even though it appears set up properly. I've heard that ATI HDMI devices are working, but others are not well, e.g. on some devices only left channel is output and on others silent.
Moreover, I'm not pretty sure whether HDMI is connected from the digital out of STAC codec. On many devices (e.g. ASUS ones), there is a dedicated codec for the HDMI transmitter.
So, right now, it's total lack of (hardware) information, unfortuantely.
We may try some verbs for HDMI that are not used in the current ALSA code, at least. These verbs were extended later...
Takashi
At Fri, 29 Feb 2008 06:48:12 -0800, Tellman, Steven wrote:
Takashi,
On the XPS M1330 (and XPS M1530) the SPDIF pin of the 9228 is hooked to the HDMI as these laptops were made before the HDMI portion had their own audio codec portion of the transceiver. So technically, it should be pretty simple ;)
Thanks, that's good to know.
Do you know any other issues that stop HDMI audio working? IIRC, ATI board has a h/w switch in the video side to enable/disable its graphic-board HDMI, for example...
Also, does STAC9228 codec support verbs for controlling HDMI, e.g. converter channel count (F2Dh, 72Dh) ?
Takashi
IDT PC Audio Demo/Linux/Test
-----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Friday, February 29, 2008 5:57 AM To: Armando Di Cianno Cc: Tellman, Steven; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
At Thu, 28 Feb 2008 20:29:06 -0500, Armando Di Cianno wrote:
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI
devices
(that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is
misconfigured,
or will simply not work?
I will gladly try any suggestions, thoroughly. Thanks.
It's a bit hard to judge right now. So far, many HDMI devices seem not working even though it appears set up properly. I've heard that ATI HDMI devices are working, but others are not well, e.g. on some devices only left channel is output and on others silent.
Moreover, I'm not pretty sure whether HDMI is connected from the digital out of STAC codec. On many devices (e.g. ASUS ones), there is a dedicated codec for the HDMI transmitter.
So, right now, it's total lack of (hardware) information, unfortuantely.
We may try some verbs for HDMI that are not used in the current ALSA code, at least. These verbs were extended later...
Takashi
I remember there being some work that the graphics guys had to do on the Windows side to get HDMI audio working for us. We have no control over the HDMI, we just enable our SPDIF pin and pump the bits.
I can see if I can get a contact over at NVidia/ATI to help us out a bit if you want.
IDT PC Audio Demo/Linux/Test (512) 330-3127
-----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Friday, February 29, 2008 8:56 AM To: Tellman, Steven Cc: Armando Di Cianno; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
At Fri, 29 Feb 2008 06:48:12 -0800, Tellman, Steven wrote:
Takashi,
On the XPS M1330 (and XPS M1530) the SPDIF pin of the 9228 is hooked to the HDMI as these laptops were made before the HDMI portion had their own audio codec portion of the transceiver. So technically,
it
should be pretty simple ;)
Thanks, that's good to know.
Do you know any other issues that stop HDMI audio working? IIRC, ATI board has a h/w switch in the video side to enable/disable its graphic-board HDMI, for example...
Also, does STAC9228 codec support verbs for controlling HDMI, e.g. converter channel count (F2Dh, 72Dh) ?
Takashi
IDT PC Audio Demo/Linux/Test
-----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Friday, February 29, 2008 5:57 AM To: Armando Di Cianno Cc: Tellman, Steven; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
At Thu, 28 Feb 2008 20:29:06 -0500, Armando Di Cianno wrote:
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI
devices
(that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is
misconfigured,
or will simply not work?
I will gladly try any suggestions, thoroughly. Thanks.
It's a bit hard to judge right now. So far, many HDMI devices seem not working even though it appears set up properly. I've heard that ATI HDMI devices are working, but others are not well, e.g. on some devices only left channel is output and on others silent.
Moreover, I'm not pretty sure whether HDMI is connected from the digital out of STAC codec. On many devices (e.g. ASUS ones), there is a dedicated codec for the HDMI transmitter.
So, right now, it's total lack of (hardware) information, unfortuantely.
We may try some verbs for HDMI that are not used in the current ALSA code, at least. These verbs were extended later...
Takashi
On Thu, Feb 28, 2008 at 8:29 PM, Armando Di Cianno armando@goodship.net wrote:
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI devices (that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is misconfigured, or will simply not work?
Do you have the binary ATI driver installed? Several users have reported that it's required for HDMI audio to work.
Lee
This system is NVidia (or Intel).
________________________________
From: rlrevell@gmail.com on behalf of Lee Revell Sent: Sat 3/1/2008 9:03 PM To: Armando Di Cianno Cc: Tellman, Steven; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
On Thu, Feb 28, 2008 at 8:29 PM, Armando Di Cianno armando@goodship.net wrote:
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI devices (that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is misconfigured, or will simply not work?
Do you have the binary ATI driver installed? Several users have reported that it's required for HDMI audio to work.
Lee
On Sun, 2008-03-02 at 14:20 -0800, Tellman, Steven wrote:
This system is NVidia (or Intel).
The sound chipset is Intel, the graphics card is Nvidia. Some of the m1330 configurations have both Intel audio and graphics.
There's some more detailed alsa-info.sh and lspci output previouisly in this thread, in case there's other specific info. In case you require any other info, please let me know.
On Sat, 2008-03-01 at 22:03 -0500, Lee Revell wrote:
Do you have the binary ATI driver installed? Several users have reported that it's required for HDMI audio to work.
The binary ATI driver? Are you talking the graphics driver from ATI? This is an Nvidia graphics laptop, with Intel HDA audio.
Sorry, if I wasn't clear.
On Sun, Mar 2, 2008 at 5:36 PM, Armando Di Cianno armando@goodship.net wrote:
On Sat, 2008-03-01 at 22:03 -0500, Lee Revell wrote:
Do you have the binary ATI driver installed? Several users have reported that it's required for HDMI audio to work.
The binary ATI driver? Are you talking the graphics driver from ATI? This is an Nvidia graphics laptop, with Intel HDA audio.
Sorry, if I wasn't clear.
According to a post from an nvidia employee on nvnews, HDMI is currently unsupported. Sorry I don't have the link but you should be able to search for "Linux HDMI" on the site.
Lee
It is possible that HDMI audio is pulled from an unknown i2c bus on the video chip. 3dfx did that a long time ago with their 3500 card for their tv tuner portion.
I think at this point, unless Steven knows more, this may be unsupported until nVidia adds support in their driver or opens up part of the spec.
Tobin
On Sun, 2008-03-02 at 14:20 -0800, Tellman, Steven wrote:
This system is NVidia (or Intel).
From: rlrevell@gmail.com on behalf of Lee Revell Sent: Sat 3/1/2008 9:03 PM To: Armando Di Cianno Cc: Tellman, Steven; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
On Thu, Feb 28, 2008 at 8:29 PM, Armando Di Cianno armando@goodship.net wrote:
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI devices (that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is misconfigured, or will simply not work?
Do you have the binary ATI driver installed? Several users have reported that it's required for HDMI audio to work.
Lee
Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Found it:
http://www.nvnews.net/vbulletin/showthread.php?t=97993&highlight=hdmi+au...
There's also an Ubuntu bug open for this as well on Launchpad. I'll see what else I can find out, but at the moment it looks like we're stuck. Sucks too, as Linux tends to make excellent HTPCs...
Here's the Launchpad link, it's actually for a Realtek device but with nvidia video on the motherboard.
https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/148097
- Steven
-----Original Message----- From: Tobin Davis [mailto:tdavis@dsl-only.net] Sent: Sun 3/2/2008 4:59 PM To: Tellman, Steven Cc: Lee Revell; Armando Di Cianno; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
It is possible that HDMI audio is pulled from an unknown i2c bus on the video chip. 3dfx did that a long time ago with their 3500 card for their tv tuner portion.
I think at this point, unless Steven knows more, this may be unsupported until nVidia adds support in their driver or opens up part of the spec.
Tobin
On Sun, 2008-03-02 at 14:20 -0800, Tellman, Steven wrote:
This system is NVidia (or Intel).
From: rlrevell@gmail.com on behalf of Lee Revell Sent: Sat 3/1/2008 9:03 PM To: Armando Di Cianno Cc: Tellman, Steven; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
On Thu, Feb 28, 2008 at 8:29 PM, Armando Di Cianno armando@goodship.net wrote:
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI devices (that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is misconfigured, or will simply not work?
Do you have the binary ATI driver installed? Several users have reported that it's required for HDMI audio to work.
Lee
Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
At Mon, 3 Mar 2008 06:50:41 -0800, Tellman, Steven wrote:
Found it:
http://www.nvnews.net/vbulletin/showthread.php?t=97993&highlight=hdmi+au...
Thanks for info.
There's also an Ubuntu bug open for this as well on Launchpad. I'll see what else I can find out, but at the moment it looks like we're stuck. Sucks too, as Linux tends to make excellent HTPCs...
Here's the Launchpad link, it's actually for a Realtek device but with nvidia video on the motherboard.
https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/148097
The HDMI device on that boards seems not actually a Realtek but SiI1392 or Chrontel HDMI transmitter. The board has another SPDIF out, which is likely the ALC883 one. But, there might be some other cases.
Takashi
- Steven
-----Original Message----- From: Tobin Davis [mailto:tdavis@dsl-only.net] Sent: Sun 3/2/2008 4:59 PM To: Tellman, Steven Cc: Lee Revell; Armando Di Cianno; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
It is possible that HDMI audio is pulled from an unknown i2c bus on the video chip. 3dfx did that a long time ago with their 3500 card for their tv tuner portion.
I think at this point, unless Steven knows more, this may be unsupported until nVidia adds support in their driver or opens up part of the spec.
Tobin
On Sun, 2008-03-02 at 14:20 -0800, Tellman, Steven wrote:
This system is NVidia (or Intel).
From: rlrevell@gmail.com on behalf of Lee Revell Sent: Sat 3/1/2008 9:03 PM To: Armando Di Cianno Cc: Tellman, Steven; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
On Thu, Feb 28, 2008 at 8:29 PM, Armando Di Cianno armando@goodship.net wrote:
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI devices (that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is misconfigured, or will simply not work?
Do you have the binary ATI driver installed? Several users have reported that it's required for HDMI audio to work.
Lee
Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
On Mon, 2008-03-03 at 06:59 +0800, Tobin Davis wrote:
It is possible that HDMI audio is pulled from an unknown i2c bus on the video chip. 3dfx did that a long time ago with their 3500 card for their tv tuner portion.
I think at this point, unless Steven knows more, this may be unsupported until nVidia adds support in their driver or opens up part of the spec.
I googled some info about the nvidia G84** or G86** graphics core. They got the audio signal from the external audio device through spdif.
For Dell M1330, the spdif configuration for the stac92** codec looks well, maybe the graphic driver can control whether the audio signal is allowed to transfer through the HDMI port?
Tobin
On Sun, 2008-03-02 at 14:20 -0800, Tellman, Steven wrote:
This system is NVidia (or Intel).
From: rlrevell@gmail.com on behalf of Lee Revell Sent: Sat 3/1/2008 9:03 PM To: Armando Di Cianno Cc: Tellman, Steven; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] HDMI v. ICH8 on Dell XPS M1330
On Thu, Feb 28, 2008 at 8:29 PM, Armando Di Cianno
armando@goodship.net wrote:
On Thu, 2008-02-28 at 12:55 -0800, Tellman, Steven wrote:
Notice we use the "Other Digital" as the jack. Is that possibly causing a problem? IEC958 shows up, but doesn't provide output to HDMI
devices
(that I've tested).
At a user level, this is definitely what I've experienced.
Are there any suggestions for testing if my current ALSA install /should/ work, or how to find out if something is
misconfigured,
or will simply not work?
Do you have the binary ATI driver installed? Several users have reported that it's required for HDMI audio to work.
Lee
Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
On Tue, Mar 4, 2008 at 4:44 AM, Jiang zhe zhe.jiang@intel.com wrote:
On Mon, 2008-03-03 at 06:59 +0800, Tobin Davis wrote:
It is possible that HDMI audio is pulled from an unknown i2c bus on the video chip. 3dfx did that a long time ago with their 3500 card for their tv tuner portion.
I think at this point, unless Steven knows more, this may be unsupported until nVidia adds support in their driver or opens up part of the spec.
I googled some info about the nvidia G84** or G86** graphics core. They got the audio signal from the external audio device through spdif.
For Dell M1330, the spdif configuration for the stac92** codec looks well, maybe the graphic driver can control whether the audio signal is allowed to transfer through the HDMI port?
In addition to anecdotal evidence, I can confirm that on my work machine the ATI video driver does seem to touch the audio. Interestingly it's the userspace X driver, not the in-kernel FGLRX module.
rlrevell@chronopolis:~$ strings /usr/lib/xorg/modules/drivers/fglrx_drv.so | grep -i hdmi | grep -i audio ex_aHDMIAudioParameters
Isn't DRM fun? ;-)
Lee
On Tue, 2008-03-04 at 19:54 -0500, Lee Revell wrote:
In addition to anecdotal evidence, I can confirm that on my work machine the ATI video driver does seem to touch the audio. Interestingly it's the userspace X driver, not the in-kernel FGLRX module.
rlrevell@chronopolis:~$ strings /usr/lib/xorg/modules/drivers/fglrx_drv.so | grep -i hdmi | grep -i audio ex_aHDMIAudioParameters
Isn't DRM fun? ;-)
A similar test with nvidia-drivers 169.12 proved fruitless (as expected).
On Tue, 2008-03-04 at 17:44 +0800, Jiang zhe wrote:
I googled some info about the nvidia G84** or G86** graphics core. They got the audio signal from the external audio device through spdif.
For Dell M1330, the spdif configuration for the stac92** codec looks well, maybe the graphic driver can control whether the audio signal is allowed to transfer through the HDMI port?
If it's a matter of a driver twiddling a bit on and off, maybe if someone with an @intel.com email address -- *hint hint* -- emailed NVIDIA tech guys, we might be able to get an answer as to what bits can be addressed to turn HDMI on and off, w/o modifying the NVIDIA binary driver.
Does alsa-devel have a good report with NVIDIA, or any at all?
participants (6)
-
Armando Di Cianno
-
Jiang zhe
-
Lee Revell
-
Takashi Iwai
-
Tellman, Steven
-
Tobin Davis