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List:       alsa-devel
Subject:    AIM SC808
From:       Marcin Kocur <marcin2006 () gmail ! com>
Date:       2020-10-31 22:25:30
Message-ID: 761be2c5-f80b-3d46-cc64-30607724498f () gmail ! com
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Hello all,

I own this card since recently:

03:00.0 Audio device: C-Media Electronics Inc CM8888 [Oxygen Express]
     Subsystem: C-Media Electronics Inc HDA Controller
     Flags: bus master, fast devsel, latency 0, IRQ 31, IOMMU group 7
     Memory at fcd00000 (32-bit, non-prefetchable) [size=16K]
     Capabilities: <access denied>
     Kernel driver in use: snd_hda_intel
     Kernel modules: snd_hda_intel

and I found out it doesn't work great. Only headphone output is 
functioning, RCA line out does not (haven't checked the rest). I found 
models list in 
/usr/lib/modules/5.9.2-arch1-1/build/Documentation/sound/hd-audio/models.rst 
and tested them all using a rmmod / modprobe bash script but none of 
them seems to enable RCA output.

Windows drivers have possibility to switch between headphone and RCA 
output from manufacturer's app (there is a click sound coming from 
electronics of the card when I do this).

I never tampered with low level hardware and I'm not familiar with ALSA 
development but what I was thinking is that maybe an ALSA snd_hda_intel 
developer would be interested in receiving this card for tests?

-- 
Pozdrawiam / Greetings
Marcin Kocur █

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