[alsa-devel] Realtek ALC892 / snd-hda-intel breakage between 3.16 & 3.19

[Sander Smeenk]

Hi,

After upgrading from 3.16.0-38-generic (Ubuntu Utopic) to
3.19.0-18-generic (Ubuntu Vivid) my audio stopped working.
The issue appears to be in the snd-hda-intel driver.

'Alsa-info' is attached as gzip text, or online in paste bins:
- 3.19, broken:  https://8n1.org/10575/e5c1
- 3.16, working: https://8n1.org/10576/0631

With 3.19, tools fail like:
| [sanders at msi:~] % aplay test.wav
| Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
| ALSA lib pcm_pulse.c:752:(pulse_prepare) PulseAudio: Unable to create stream: No such entity
| aplay: set_params:1297: Unable to install hw params:
| [ .. ]
|
| [sanders at msi:~] % mplayer -ao alsa test.wav
| Selected audio codec: Uncompressed PCM [pcm]
| [ .. ]
| AUDIO: 44100 Hz, 2 ch, s16le, 1411.2 kbit/100.00% (ratio:
| 176400->176400)
| [AO_ALSA] alsa-lib: pcm_pulse.c:752:(pulse_prepare) PulseAudio: Unable to create stream: No such entity
| [AO_ALSA] Unable to set hw-parameters: Input/output error
| Failed to initialize audio driver 'alsa'
| Could not open/initialize audio device -> no sound.

And i have only one card listed in /proc/asound/cards, index 1 not 0:
| [sanders at msi:~] % cat /proc/asound/cards
|  1 [PCH            ]: HDA-Intel - HDA Intel PCH
|                       HDA Intel PCH at 0xf7b10000 irq 36

This all works perfectly fine with 3.16.

Please let me know when i can supply more information to dig into this!

Regards,
-Sndr.
-- 
| Alles hat ein ende, nur die wurst hat zwei.
| 4096R/20CC6CD2 - 6D40 1A20 B9AA 87D4 84C7  FBD6 F3A9 9442 20CC 6CD2
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