[Pkg-alsa-devel] Bug#814763: Bug#814763: HDMI sound not working

[Elimar Riesebieter]

Control: severity -1 normal
Control: tags -1 moreinfo

* Erik de Castro Lopo <erikd at mega-nerd.com> [2016-02-15 19:21 +1100]:

> Package: alsa-base
> Version: 1.0.27+1
> Severity: important
> 
> I have two machines; an Intel NUC i5 and a Dell laptop. Both have
> Intel i915 based graphics cards. Both run Debian Testing.
> 
> At various times in the past I have used both these machines to
> display videos on my TV using HDMI. In both cases, audio that goes
> to the TV was transferred over the HDMI cable.
> 
> Unfortunately some time in the last 2 months this broke. Both machines
> now quite happily display video over HDMI but the audio is missing.
> Part of the problem is that I can't remember the details of when it
> last worked.
> 
> Here's what I know (on my laptop plugged into the TV):
> 
>     $ lspci | grep -i vga
>     00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core
>             processor Graphics Controller (rev 09)
> 
>     $ lsmod | grep snd
>     snd_hda_codec_hdmi     49152  1
>     snd_hda_codec_realtek    81920  1
>     snd_hda_codec_generic    73728  1 snd_hda_codec_realtek
>     snd_hda_intel            36864  3
>     snd_hda_codec           135168  4  snd_hda_codec_realtek,snd_hda_codec_hdmi,
>                                        snd_hda_codec_generic,snd_hda_intel
>     snd_hda_core             65536  5  snd_hda_codec_realtek,snd_hda_codec_hdmi,
>                                        snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
>     snd_hwdep                16384  1  snd_hda_codec
>     snd_pcm                 102400  4  snd_hda_codec_hdmi,snd_hda_codec,
>                                        snd_hda_intel,snd_hda_core
>     snd_timer                32768  1  snd_pcm
>     snd                      81920  14 snd_hda_codec_realtek,snd_hwdep,snd_timer,
>                                        snd_hda_codec_hdmi,snd_pcm,snd_hda_codec_generic,
>                                        snd_hda_codec,snd_hda_intel
>     soundcore               16384  1 s
> 
> Interesting to note that the snd_hda_codec_hdmi driver gets loaded, but it
> looks like ALSA doesn't know about it:
> 
>     $ cat /proc/asound/cards
>      0 [PCH            ]: HDA-Intel - HDA Intel PCH
>                           HDA Intel PCH at 0xd1710000 irq 32
Thats ok.

What tells:

# aplay -l

Elimar
-- 
  Alles was viel bedacht wird ist bedenklich!;-)
         Friedrich Nietzsche