Took an image of my existing SD card for backup purposes then updated my install.
Still no output.
Tried switching I2S on & Off, when off I had the choice between headphones (Pi4 output) or HiFiBerry DAC Plus. When the latter is selected, it complains the device sisn’t connected. When in I2S mode, with HiFiBerry DAC2 Pro selected, the same ALSA error appears.
I will now try a completely vanilla install, update that to the alpha just in case there’s a plugin throwing something awry.
For completeness. The output of system information reads:
Network info
Interface: wlan0
IP Address: 10.0.1.73
MAC Address: d8:3a:dd:53:bc:9d
Type: wireless
Speed: nullMb/s
Audio info
Hw audio configured: HiFiBerry DAC2 Pro
Mixer type: Hardware
Number of channels: 2
Supported sample rate: 22050 44100 48000 88200 96000 176400 192000
Board info
Manufacturer: Raspberry Pi Foundation
Model: Raspberry Pi 4 Model B Rev 1.5 Raspberry Pi / 4B - 1.5 /
Version: b03115 / 4B - 1.5
Firmware Version: Jul 25 2024 15:00:11 version 8a2829a2ff4d4808cc14e10de7068e6afb45c96d (tainted) (release) (start)
CPU info
Brand: BCM2711
Speed: 1.5 GHz
Family: Cortex-A72
Model: 3
Number of cores: 4
Physical cores: 4
Average load: 12%
Temperature: 48°C
Memory info
Memory: 1862752 Ko
Free: 656060 Ko
Used: 1206692 Ko
Software info
Mpd version: Music Player Daemon 0.23.15 (0.23.15)
Storage info
INTERNAL storage - Size: 57014Mo
Used: 1637Mo
Available for storage: 52451Mo (92%)