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Sat, 31 Oct 2020 15:25:31 -0700 (PDT) To: alsa-devel@alsa-project.org From: Marcin Kocur Subject: AIM SC808 Message-ID: <761be2c5-f80b-3d46-cc64-30607724498f@gmail.com> Date: Sat, 31 Oct 2020 23:25:30 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-GB X-Mailman-Approved-At: Tue, 03 Nov 2020 08:45:21 +0100 X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" 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:     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 █