Intel HDMI audio - No audio in X, works in console

[Bill Wittig]

The xorg-server version is 1.5.3. I can't check specifically for the  
patch you referenced until tonight - perhaps you know if it's included  
in the released 1.5.3.

I looked through the thread Sven referenced, and it looks like this is  
related to the ELD data, however, the end of that thread (as of 4 Jan)  
is that you can get working audio over HDMI or working video, but not  
both without completely disabling acceleration, so I'm hesitant to try  
that route.

Your help and advice is greatly appreciated!

bill

Quoting Wu Fengguang <fengguang.wu at intel.com>:

> On Sun, Jan 11, 2009 at 07:03:18AM -0600, Bill Wittig wrote:
>> Hi,
>>
>> I've got a G45 MB (Gigabyte EG45M-D2SH)
>>
>> I've installed the 2.5.99.2 xf86-video-intel driver
>> the Realtek v5.09 ALSA modules which includes the ALSA v18a
>> patch_intelhdmi code
>>
>> aplay -l shows the Intel HDMI device:
>> **** List of PLAYBACK Hardware Devices ****
>> card 0: Intel [HDA Intel], device 0: ALC883 Analog [ALC883 Analog]
>>    Subdevices: 1/1
>>    Subdevice #0: subdevice #0
>> card 0: Intel [HDA Intel], device 1: ALC883 Digital [ALC883 Digital]
>>    Subdevices: 1/1
>>    Subdevice #0: subdevice #0
>> card 0: Intel [HDA Intel], device 3: INTEL HDMI [INTEL HDMI]
>>    Subdevices: 1/1
>>    Subdevice #0: subdevice #0
>>
>> I'm using MythTV, audio output device set to ALSA:hw:0,3 (using 0,0
>> works as expected for
>> analog out)
>>
>> When MythTV is displayed (i.e. X is running), no sound is heard. If I
>> switch to a console
>> (Ctl-Alt-F1) the audio is working fine.
>>
>> Any ideas?
>
> Hi Bill,
>
> What's the xserver version? I'm asking this because it's not enough to
> merely upgrade xf86-video-intel. The HDMI audio enabling code in which
> depends on a recent feature of xserver.
>
> The exact logic works like this in xorg/xf86-video-intel/src/i830_hdmi.c:
>
>     if (xf86LoaderCheckSymbol("xf86MonitorIsHDMI") &&
>             xf86MonitorIsHDMI(edid_mon))
>         dev_priv->has_hdmi_sink = TRUE;
>
>
>     if (dev_priv->has_hdmi_sink)
>             sdvox |= SDVO_AUDIO_ENABLE;
>
> So the xserver must have xf86MonitorIsHDMI() defined, which was introduced
> in this xserver commit:
>
> commit 4cf2f4172abc4bf848c1726e6dac535713e08f0b
> Author: Adam Jackson <ajax at redhat.com>
> Date:   Mon Nov 3 12:50:28 2008 -0500
>
>     Add xf86MonitorIsHDMI() helper.
>
>
> Thanks,
> Fengguang
>



-- 
Bill Wittig