RME AIO PCIe soundcard

x86 install

Internal card only plays one channel even though other channels are selected and saved in mixer settings.

Fix is to ssh into volumio and run alsamixer (select the card) where it is found that only the first channel is active.
Increase volume for second channel.
ssh another instance while the alsamixer window is open and in the new window run ‘sudo alsactl store’
Reboot and now both channels play.

The UI volume control for the card still, irritatingly, only controls one channel.
There is obviously a bug in the UI>alsa communications.

If there is a fix for the volume control to work with both channels then I can bypass my preamp and run the output from the RME card and Volumio direct to the power amplifiers.

Can supply a diagnostic if needed.
Many thanks for viewing.

OS info

Version of Volumio: 3.435
Hostname: rme
Kernel: 5.10.165-volumio
Governor: performance
Uptime: 0 days, 3 Hrs, 59 Minutes, 3 Seconds

Audio info

Hw audio configured: RME AIO_c2eeaa
Mixer type: Hardware
Number of channels: 16
Supported sample rate: 44100 48000 88200 96000 176400 192000

Board info

Manufacturer: Hewlett-Packard
Model: HP t610 PLUS WW Thin Client
Firmware Version: - 

CPU info

Brand: G-T56N Processor
Speed: 1.65Ghz
Number of cores: 2
Physical cores: 2
Average load: 4%
Temperature: °C

Memory info

Memory: 3973252 Ko
Free: 2329096 Ko
Used: 1644156 Ko

Storage info

INTERNAL storage - Size: 3809Mo
Used: 76Mo
Available for storage: 3533Mo (93%)