topic Re: Windows 8 - intel hdmi driver: 44khz wasapi bug in Graphics

Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Mon, 19 Nov 2012 10:56:13 GMT

After a lot of testing i've found out that Intel hdmi drivers have a major bug under windows 8: when you use wasapi (event/push/shared) for audio output and set it to 16/24 bit @ 44000hz the output is SILENT. You get no errors from the application (tested with foobar and xbmc), what you get is a normal playback of the audio file but with no audio output. Can anyone confirm this? In both cases resampling the audio @48khz fixed the issue but still, I/We need also the 44khz. Thank You.

OS: Windows 8 Pro

Intel HD drivers: latest @ Intel HD4000 bu

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

NICHOLAS_F_Intel — Wed, 21 Nov 2012 18:57:52 GMT

Hi cyberrage,

Can you post your dxdiag here so we can take a look at it?

Thanks,

-Nic

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Thu, 22 Nov 2012 12:08:11 GMT

sure.

http://webmail.ancnet.org/mph/DxDiag.txt http://webmail.ancnet.org/mph/DxDiag.txt

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Tue, 18 Dec 2012 18:29:09 GMT

The problem still persists with the newest drivers version 15.28.10.2897. Does anybody at least have any idea of what i'm talking about? Thank You.

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

NICHOLAS_F_Intel — Tue, 18 Dec 2012 23:08:07 GMT

Can you tell us how to reproduce your issue so we can take a look at it? Wasapi* itself doesn't appear to be an application as much as it is objects being pulled by another application. If you can let me know how to reproduce this issue, we'll take a look at it.

Thank you,

-Nic

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Wed, 19 Dec 2012 09:07:09 GMT

Alright, any application using wasapi will do but the fastest way is using foobar i guess:

*using windows 8*

1) connect the hd4000 to an AVR reciever through hdmi

2) download foobar and install it > http://www.foobar2000.org/download Download foobar2000 and optional components

3) download the foobar wasapi component and install it > http://www.foobar2000.org/components/view/foo_out_wasapi foobar2000: Components Repository - WASAPI output support

4) in foobar go to File > Preferences > Playback > Output > Device > WASAPI (event) : *Usually name of your AVR*

5) Play any mp3 or flac recorded at 44khz

The file should play without errors but you will get a SILENT output; if this happens you can then double check my theory doing the following:

1) in foobar go to File > Preferences > Playback > DSP Manager > add Resampler (PPHS) and configure it to resample at 48000hz

This way you should now hear the sound out of your file meaning the bug is on the 44khz. Let me know if this works for you and if i can help in any other way. Thank you Nic!

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Wed, 19 Dec 2012 11:09:28 GMT

Shorter Version

You can also test normal 44khz playback by going into win8 control panel > sound > properties on your avr/hdmi device > advanced > select 16/24 bit output @ 44100hz > Test and see if you get any sound out of it.

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Wed, 19 Dec 2012 11:48:37 GMT

*update* Actually i just found out this is not a wasapi-only bug, it applies also to shared mode; i didnt realize it before because my default output there was set to 24bit/96khz but if you set it to 16/24bit @ 44100hz you wont get any sounds out of any applications/windows also if they are working in direct sound (shared).

short story: intel hd4000 hdmi audio drivers does not output sound @ 44100hz at all just silence; strangely this apply also to 44khz multipliers too like 88200hz output.

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

NICHOLAS_F_Intel — Wed, 19 Dec 2012 18:27:42 GMT

Thanks for providing that information. Does this issue only occur when going through the A/V receiver? What type of A/V receiver are you using?

Thanks,

-Nic

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Wed, 19 Dec 2012 18:32:36 GMT

The issue happens always, it's not related to the reciever. I already tested it with other recievers and also tested it with another pc (nvidia) with windows 8 connected through hdmi with my main reciever and everything works just fine. Just for info my main AVR is a Pioneer LX-76

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

NICHOLAS_F_Intel — Wed, 19 Dec 2012 19:54:29 GMT

Okay, but what if you are just going from HD4000 directly to the display, no A/V in the middle - does it still happen?

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Wed, 19 Dec 2012 20:46:00 GMT

My tv doesn't have spekers so i cant test it, but i tested it with 3 different AVRs... so i don't think it's related to it. And with the same avr which doesnt work with the hd4000 i attached another pc with an nvidia and everything work flawless so...

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Thu, 20 Dec 2012 17:03:20 GMT

Nic, were you able to replicate my issue? did you try? Thank you.

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

NICHOLAS_F_Intel — Thu, 20 Dec 2012 18:24:05 GMT

I haven't done so yet, but I definitely will. AVR hardware is not something I have readily available -.^b.

-Nic

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Mon, 31 Dec 2012 09:40:26 GMT

waiting... 😃 did you try if you get sounds from 44khz directly without avr at least?

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Thu, 03 Jan 2013 19:55:31 GMT

I was finally able to test it with the hdmi directly attached to the tv and... it works, the audio get through also at 44khz but this still doesnt explain why with the same avr i can get the 44khz fine with another pc with an nvidia card. This means that the avr is perfectly fine handling the 44khz and there must be something wrong on how the intel drivers send the signal to the avr. I really NEED to get this working.

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Thu, 10 Jan 2013 10:09:21 GMT

Nic? Did you try with an AVR? maybe a Pioneer LX-76? I've also bought a gefen hdmi detective to try to solve the issue but still nothing... everything points to an uncorrect handling of the 44khz signal by intel hdmi drivers

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Mon, 14 Jan 2013 02:00:25 GMT

I did all the possible tests in the world and i'm now 100% sure that the problem is related to intel drivers not correctly handling 44100hz; the AVR need a correct signal and it doesnt get it from intel hdmi. Nvidia and ATI already corrected this issue ages ago... can we escalate this issue to the intel driver team so they can fix it? Thanks.

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

AAllo — Fri, 08 Feb 2013 12:02:20 GMT

Ignoring the problem is not gonna fix it

Re: Windows 8 - intel hdmi driver: 44khz wasapi bug

NICHOLAS_F_Intel — Wed, 13 Feb 2013 18:52:19 GMT

Hi Cyberrage, sorry for the large delay on getting back to you on this. I was just finally able to get ahold of an AV/R to do some testing with (Sony STR-DH520) and performed the repro steps you provided.

I've tested these steps on both a Windows 7* and Windows 8* machine, running HD 4000 with our latest driver .2932. Running both a .mp3 and .flac file at both 44 & 48 KHz, I was unable to reproduce the problem you described. In all cases, both files played without issue, and with sound.

Have you tested this issue using the .2932 driver as well?

Thanks,

-Nic