[alsa-devel] Bug report for: [P7xxDM2(-G), Realtek ALC898, issue: Headphone Jack, External] No sound at all

[Takashi Iwai]

On Thu, 11 Jan 2018 19:21:03 +0100,
Dennis Mungai wrote:
> 
> Hello there,
> 
> I have Ubuntu 16.04LTS installed on the Clevo P751DM2-G, also marketed
> as the Origin Eon 15-X (Late 2016 model), the System76's Serval WS
> (2017 model), the Eurocom Sky X4E2, among others.
> 
> The sound card is the Realtek ALC898 with the following output configuration:
> 
> 1. One SPDIF/headphone combo jack (to the right)
> 2. One Line Out.
> 3. One Line-In.
> 4. One Mic-In.
> 
> Background information:
> 
> On Windows, one can use the Realtek HD Audio control panel pop-up menu
> on jack detection to set the output type when an audio device is
> plugged in to an appropriate jack, combined with Sound Blaster X-Fi
> MB5 software to enable post-processing effects such as Bass, noise
> cancellation, etc.
> 
> What I have tried so far:
> 
> 1. Setting the model definition at /etc/modprobe.d/sound.conf with the
> following entries:
> 
> options snd-hda-intel model=no-primary-hp enable=1 index=0
> 
> Using such a line worked before on an MSI GS43VR 6RE Phantom Pro that
> also has the same (or a similar) ESS Sabre Audio DAC component.
> 
> Expected behavior:
> 
> When plugged into the microphone jack, the ESS Sabre DAC should be
> activated and sound should be routed to the headset.
> 
> Observed anomaly:
> 
> Sound comes out through the speakers instead.
> 
> However, the line-out output works. In that case, when plugged into
> the line out, Audio works as expected.

Judging from alsa-info.sh output, BIOS doesn't seem to give the proper
headphone pin (or the headset output), and that's the culprit.
It's a bug of BIOS.  You can try to figure out the pin and override
the pin config via hdajackretask or such a tool.


Takashi