HifiBerry DAC+ Pro failed to open "alsa" (logs included)

Hi,
Just installed a HifiBerry DAC+ Pro and when I try to play any music, I get an error:

Failed to open "alsa" [alsa]; Failed to open alsa device "hw:2,0": No such file or directory

Have gone through all relevant posts I can find, I’ve tried reflashing the SD and starting from fresh a few times, tried setting output to headphones (headphone output on Pi works fine), reboot, set back to I2S, reboot, etc, all to no avail.
I’m using a 3A power supply and have measured supply voltage at 5.1V under load.

Anyone have any ideas please? I’ve attached logs below as per requests I’ve seen in similar posts.

Volumio 2.834
Raspberry Pi 3 Model B
HifiBerry DAC+ Pro
7" Official Raspberry Pi touchscreen

As far as I can tell, there should be no GPIO conflicts between this particular DAC and the touchscreen.

Dev log http://logs.volumio.org/volumio/wTexHFs.html

volumio@cave-audio:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
  Subdevices: 4/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 IEC958/HDMI [bcm2835 IEC958/HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: ALSA [bcm2835 ALSA], device 2: bcm2835 IEC958/HDMI1 [bcm2835 IEC958/HDMI1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
  Subdevices: 3/3
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2



volumio@cave-audio:~$ cat /boot/config.txt
initramfs volumio.initrd
gpu_mem=32
max_usb_current=1
dtparam=audio=on
audio_pwm_mode=2
dtparam=i2c_arm=on
disable_splash=1
hdmi_force_hotplug=1

include userconfig.txt

#### Volumio i2s setting below: do not alter ####
dtoverlay=hifiberry-dacplus


volumio@cave-audio:~$ cat /boot/cmdline.txt
splash quiet plymouth.ignore-serial-consoles dwc_otg.fiq_enable=1 dwc_otg.fiq_fsm_enable=1 dwc_otg.fiq_fsm_mask=0xF dwc_otg.nak_holdoff=1 console=serial0,115200 kgdboc=serial0,115200 console=tty1 imgpart=/dev/mmcblk0p2 imgfile=/volumio_current.sqsh elevator=noop rootwait bootdelay=5 logo.nologo vt.global_cursor_default=0 loglevel=0 snd-bcm2835.enable_compat_alsa=1 snd_bcm2835.enable_headphones=1


volumio@cave-audio:~$ dmesg
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.19.118-v7+ (dom@buildbot) (gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0-88-g8460611)) #1311 SMP Mon Apr 27 14:21:24 BST 2020
[    0.000000] CPU: ARMv7 Processor [410fd034] revision 4 (ARMv7), cr=10c5383d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: Raspberry Pi 3 Model B Rev 1.2
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] cma: Reserved 8 MiB at 0x3d800000
[    0.000000] On node 0 totalpages: 253952
[    0.000000]   Normal zone: 2232 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 253952 pages, LIFO batch:63
[    0.000000] random: get_random_bytes called from start_kernel+0xac/0x4b4 with crng_init=0
[    0.000000] percpu: Embedded 16 pages/cpu s36864 r8192 d20480 u65536
[    0.000000] pcpu-alloc: s36864 r8192 d20480 u65536 alloc=16*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 251720
[    0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 bcm2708_fb.fbwidth=800 bcm2708_fb.fbheight=480 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  splash quiet plymouth.ignore-serial-consoles dwc_otg.fiq_enable=1 dwc_otg.fiq_fsm_enable=1 dwc_otg.fiq_fsm_mask=0xF dwc_otg.nak_holdoff=1 console=ttyS0,115200 kgdboc=ttyS0,115200 console=tty1 imgpart=/dev/mmcblk0p2 imgfile=/volumio_current.sqsh elevator=noop rootwait bootdelay=5 logo.nologo vt.global_cursor_default=0 loglevel=0 snd-bcm2835.enable_compat_alsa=1 snd_bcm2835.enable_headphones=1
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Memory: 964240K/1015808K available (8192K kernel code, 656K rwdata, 2232K rodata, 1024K init, 831K bss, 43376K reserved, 8192K cma-reserved)
[    0.000000] Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
    vmalloc : 0xbe800000 - 0xff800000   (1040 MB)
    lowmem  : 0x80000000 - 0xbe000000   ( 992 MB)
    modules : 0x7f000000 - 0x80000000   (  16 MB)
      .text : 0x(ptrval) - 0x(ptrval)   (9184 kB)
      .init : 0x(ptrval) - 0x(ptrval)   (1024 kB)
      .data : 0x(ptrval) - 0x(ptrval)   ( 657 kB)
       .bss : 0x(ptrval) - 0x(ptrval)   ( 832 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] ftrace: allocating 27093 entries in 80 pages
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] arch_timer: cp15 timer(s) running at 19.20MHz (phys).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 440795202767 ns
[    0.000007] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
[    0.000018] Switching to timer-based delay loop, resolution 52ns
[    0.000264] Console: colour dummy device 80x30
[    0.000284] console [tty1] enabled
[    0.000326] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=192000)
[    0.000340] pid_max: default: 32768 minimum: 301
[    0.000689] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000705] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.001716] CPU: Testing write buffer coherency: ok
[    0.002178] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.002835] Setting up static identity map for 0x100000 - 0x10003c
[    0.002984] rcu: Hierarchical SRCU implementation.
[    0.003794] smp: Bringing up secondary CPUs ...
[    0.004693] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.005671] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[    0.006572] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[    0.006684] smp: Brought up 1 node, 4 CPUs
[    0.006696] SMP: Total of 4 processors activated (153.60 BogoMIPS).
[    0.006702] CPU: All CPU(s) started in HYP mode.
[    0.006707] CPU: Virtualization extensions available.
[    0.007620] devtmpfs: initialized
[    0.021669] VFP support v0.3: implementor 41 architecture 3 part 40 variant 3 rev 4
[    0.021910] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.021931] futex hash table entries: 1024 (order: 4, 65536 bytes)
[    0.022521] pinctrl core: initialized pinctrl subsystem
[    0.023368] NET: Registered protocol family 16
[    0.026822] DMA: preallocated 1024 KiB pool for atomic coherent allocations
[    0.032959] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.032967] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.033170] Serial: AMBA PL011 UART driver
[    0.035756] bcm2835-mbox 3f00b880.mailbox: mailbox enabled
[    0.050037] raspberrypi-firmware soc:firmware: Attached to firmware from 2020-04-27 14:35, variant start
[    0.060050] raspberrypi-firmware soc:firmware: Firmware hash is 3a8f1793b758d6fb7f375edaa260e069ecd34c88
[    0.103799] bcm2835-dma 3f007000.dma: DMA legacy API manager at (ptrval), dmachans=0x1
[    0.105446] SCSI subsystem initialized
[    0.105669] usbcore: registered new interface driver usbfs
[    0.105723] usbcore: registered new interface driver hub
[    0.105820] usbcore: registered new device driver usb
[    0.107799] clocksource: Switched to clocksource arch_sys_counter
[    0.198525] VFS: Disk quotas dquot_6.6.0
[    0.198614] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.198756] FS-Cache: Loaded
[    0.198963] CacheFiles: Loaded
[    0.208961] NET: Registered protocol family 2
[    0.209815] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes)
[    0.209853] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[    0.209961] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[    0.210147] TCP: Hash tables configured (established 8192 bind 8192)
[    0.210285] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.210331] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.210576] NET: Registered protocol family 1
[    0.211220] RPC: Registered named UNIX socket transport module.
[    0.211226] RPC: Registered udp transport module.
[    0.211232] RPC: Registered tcp transport module.
[    0.211238] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.211517] Trying to unpack rootfs image as initramfs...
[    1.932794] Freeing initrd memory: 19480K
[    1.940371] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 7 counters available
[    1.943464] Initialise system trusted keyrings
[    1.943692] workingset: timestamp_bits=14 max_order=18 bucket_order=4
[    1.953592] FS-Cache: Netfs 'nfs' registered for caching
[    1.954154] NFS: Registering the id_resolver key type
[    1.954186] Key type id_resolver registered
[    1.954193] Key type id_legacy registered
[    1.954209] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    1.959653] Key type asymmetric registered
[    1.959664] Asymmetric key parser 'x509' registered
[    1.959725] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
[    1.959876] io scheduler noop registered (default)
[    1.959884] io scheduler deadline registered
[    1.960079] io scheduler cfq registered
[    1.960086] io scheduler mq-deadline registered
[    1.960093] io scheduler kyber registered
[    1.963479] bcm2708_fb soc:fb: FB found 1 display(s)
[    1.975394] Console: switching to colour frame buffer device 100x30
[    1.982061] bcm2708_fb soc:fb: Registered framebuffer for display 0, size 800x480
[    1.984312] bcm2835-rng 3f104000.rng: hwrng registered
[    1.984673] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[    1.985176] vc-sm: Videocore shared memory driver
[    1.985510] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
[    1.996211] brd: module loaded
[    2.006307] loop: module loaded
[    2.006937] Loading iSCSI transport class v2.0-870.
[    2.007629] libphy: Fixed MDIO Bus: probed
[    2.007730] usbcore: registered new interface driver lan78xx
[    2.007849] usbcore: registered new interface driver smsc95xx
[    2.007866] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[    2.535753] dwc_otg 3f980000.usb: base=(ptrval)
[    2.736010] Core Release: 2.80a
[    2.736020] Setting default values for core params
[    2.736049] Finished setting default values for core params
[    2.936348] Using Buffer DMA mode
[    2.936355] Periodic Transfer Interrupt Enhancement - disabled
[    2.936361] Multiprocessor Interrupt Enhancement - disabled
[    2.936369] OTG VER PARAM: 0, OTG VER FLAG: 0
[    2.936379] Dedicated Tx FIFOs mode
[    2.936729] WARN::dwc_otg_hcd_init:1074: FIQ DMA bounce buffers: virt = bd904000 dma = 0xfd904000 len=9024
[    2.936755] FIQ FSM acceleration enabled for :
Non-periodic Split Transactions
Periodic Split Transactions
High-Speed Isochronous Endpoints
Interrupt/Control Split Transaction hack enabled
[    2.936762] dwc_otg: Microframe scheduler enabled
[    2.936816] WARN::hcd_init_fiq:457: FIQ on core 1
[    2.936826] WARN::hcd_init_fiq:458: FIQ ASM at 8068fda0 length 36
[    2.936837] WARN::hcd_init_fiq:497: MPHI regs_base at be810000
[    2.936853] dwc_otg 3f980000.usb: DWC OTG Controller
[    2.936887] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[    2.936921] dwc_otg 3f980000.usb: irq 56, io mem 0x00000000
[    2.936969] Init: Port Power? op_state=1
[    2.936975] Init: Power Port (0)
[    2.937218] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 4.19
[    2.937230] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    2.937239] usb usb1: Product: DWC OTG Controller
[    2.937248] usb usb1: Manufacturer: Linux 4.19.118-v7+ dwc_otg_hcd
[    2.937257] usb usb1: SerialNumber: 3f980000.usb
[    2.937912] hub 1-0:1.0: USB hub found
[    2.937958] hub 1-0:1.0: 1 port detected
[    2.938551] dwc_otg: FIQ enabled
[    2.938557] dwc_otg: NAK holdoff enabled
[    2.938562] dwc_otg: FIQ split-transaction FSM enabled
[    2.938572] Module dwc_common_port init
[    2.938826] usbcore: registered new interface driver usb-storage
[    2.939016] mousedev: PS/2 mouse device common for all mice
[    2.939916] bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer
[    2.940155] bcm2835-cpufreq: min=600000 max=1200000
[    2.940647] sdhci: Secure Digital Host Controller Interface driver
[    2.940652] sdhci: Copyright(c) Pierre Ossman
[    2.941047] mmc-bcm2835 3f300000.mmcnr: could not get clk, deferring probe
[    2.941463] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe
[    2.941600] sdhci-pltfm: SDHCI platform and OF driver helper
[    2.943133] ledtrig-cpu: registered to indicate activity on CPUs
[    2.943322] hidraw: raw HID events driver (C) Jiri Kosina
[    2.943453] usbcore: registered new interface driver usbhid
[    2.943458] usbhid: USB HID core driver
[    2.944368] vchiq: vchiq_init_state: slot_zero = (ptrval), is_master = 0
[    2.945836] [vc_sm_connected_init]: start
[    2.954591] [vc_sm_connected_init]: end - returning 0
[    2.955705] Initializing XFRM netlink socket
[    2.955737] NET: Registered protocol family 17
[    2.955846] Key type dns_resolver registered
[    2.956733] Registering SWP/SWPB emulation handler
[    2.957383] registered taskstats version 1
[    2.957400] Loading compiled-in X.509 certificates
[    2.964092] uart-pl011 3f201000.serial: cts_event_workaround enabled
[    2.964169] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 81, base_baud = 0) is a PL011 rev2
[    2.966001] mmc-bcm2835 3f300000.mmcnr: mmc_debug:0 mmc_debug2:0
[    2.966012] mmc-bcm2835 3f300000.mmcnr: DMA channel allocated
[    2.991147] sdhost: log_buf @ (ptrval) (fd907000)
[    3.026243] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[    3.027842] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    3.029426] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    3.032265] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[    3.039870] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[    3.041149] of_cfs_init
[    3.041241] of_cfs_init: OK
[    3.048921] Freeing unused kernel memory: 1024K
[    3.049369] Run /init as init process
[    3.112904] random: fast init done
[    3.136167] mmc0: host does not support reading read-only switch, assuming write-enable
[    3.140357] mmc0: new high speed SDHC card at address aaaa
[    3.141617] mmcblk0: mmc0:aaaa SL08G 7.40 GiB
[    3.144187]  mmcblk0: p1 p2 p3
[    3.158569] mmc1: new high speed SDIO card at address 0001
[    3.177954] Indeed it is in host mode hprt0 = 00021501
[    3.218412] initramfs: Booting Volumio for BCM2835
[    3.218589] initramfs: This script mounts rootfs RO with an overlay RW layer.
[    3.242851] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    3.263521] fuse init (API version 7.27)
[    3.265423] initramfs: IMGPART=/dev/mmcblk0p2
[    3.265572] initramfs: IMGFILE=/volumio_current.sqsh
[    3.265810] initramfs: Boot delay (except first time) will be 5 seconds
[    3.315922] initramfs: /dev/mmcblk0p2:
[    3.341531] EXT4-fs (mmcblk0p2): recovery complete
[    3.343203] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    3.345061] initramfs: Doing a 5 second delay here to give kernel load a headstart
[    3.387835] usb 1-1: new high-speed USB device number 2 using dwc_otg
[    3.387981] Indeed it is in host mode hprt0 = 00001101
[    3.628095] usb 1-1: New USB device found, idVendor=0424, idProduct=9514, bcdDevice= 2.00
[    3.628108] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    3.628737] hub 1-1:1.0: USB hub found
[    3.628828] hub 1-1:1.0: 5 ports detected
[    3.947827] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[    4.078063] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00, bcdDevice= 2.00
[    4.078075] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    4.080640] smsc95xx v1.0.6
[    4.171296] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-3f980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:7f:de:9c
[    8.349429] initramfs: Checking for USB updates
[    8.455089] initramfs: No USB device detected (when incorrect, try adding 'bootdelay=5' to your boot cmdline)
[    8.603958] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[    8.660135] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[    9.967614] EXT4-fs (mmcblk0p3): 2 orphan inodes deleted
[    9.967623] EXT4-fs (mmcblk0p3): recovery complete
[   10.264595] EXT4-fs (mmcblk0p3): mounted filesystem with ordered data mode. Opts: (null)
[   10.267658] initramfs: With Option:
[   10.392967] initramfs: VOLUMIO_VERSION="2.834"
[   10.393139] initramfs: Finish initramfs, continue booting Volumio
[   10.842391] random: systemd: uninitialized urandom read (16 bytes read)
[   10.848705] systemd[1]: systemd 215 running in system mode. (+PAM +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ -SECCOMP -APPARMOR)
[   10.849060] systemd[1]: Detected architecture 'arm'.
[   10.995669] NET: Registered protocol family 10
[   10.997133] Segment Routing with IPv6
[   10.997384] systemd[1]: Inserted module 'ipv6'
[   10.999247] systemd[1]: Set hostname to <cave-audio>.
[   11.101007] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read)
[   11.202495] random: systemd: uninitialized urandom read (16 bytes read)
[   11.287063] systemd[1]: [/lib/systemd/system/mpd.service:18] Unknown lvalue 'ProtectKernelTunables' in section 'Service'
[   11.287130] systemd[1]: [/lib/systemd/system/mpd.service:19] Unknown lvalue 'ProtectControlGroups' in section 'Service'
[   11.287189] systemd[1]: [/lib/systemd/system/mpd.service:20] Unknown lvalue 'ProtectKernelModules' in section 'Service'
[   11.287266] systemd[1]: [/lib/systemd/system/mpd.service:23] Unknown lvalue 'RestrictNamespaces' in section 'Service'
[   11.354167] systemd[1]: Cannot add dependency job for unit display-manager.service, ignoring: Unit display-manager.service failed to load: No such file or directory.
[   11.357690] systemd[1]: Starting Forward Password Requests to Wall Directory Watch.
[   11.605637] i2c /dev entries driver
[   11.970766] systemd-udevd[207]: starting version 215
[   12.321646] rpi-ft5406 rpi_ft5406: Probing device
[   12.330982] input: FT5406 memory based driver as /devices/virtual/input/input0
[   12.395613] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned.
[   12.398235] bcm2835_vc_sm_cma_probe: Videocore shared memory driver
[   12.398250] [vc_sm_connected_init]: start
[   12.405565] [vc_sm_connected_init]: installed successfully
[   12.423494] media: Linux media interface: v0.10
[   12.483676] videodev: Linux video capture interface: v2.00
[   12.619439] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[   12.635350] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[   12.677169] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.
[   12.717571] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.
[   12.743014] bcm2835-codec bcm2835-codec: Device registered as /dev/video10
[   12.743054] bcm2835-codec bcm2835-codec: Loaded V4L2 decode
[   12.762048] bcm2835-codec bcm2835-codec: Device registered as /dev/video11
[   12.762085] bcm2835-codec bcm2835-codec: Loaded V4L2 encode
[   12.774482] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[   12.776931] bcm2835-codec bcm2835-codec: Device registered as /dev/video12
[   12.776987] bcm2835-codec bcm2835-codec: Loaded V4L2 isp
[   12.779597] snd_bcm2835: unknown parameter 'index' ignored
[   12.814327] bcm2835_audio soc:audio: card created with 5 channels
[   12.838228] bcm2835_audio soc:audio: card created with 3 channels
[   12.906109] snd-rpi-hifiberry-dacplus soc:sound: ASoC: CODEC DAI pcm512x-hifi not registered - will retry
[   12.955977] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[   12.981642] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   12.987146] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[   12.987162] cfg80211: failed to load regulatory.db
[   13.204261] snd-rpi-hifiberry-dacplus soc:sound: ASoC: CODEC DAI pcm512x-hifi not registered - will retry
[   13.206092] brcmfmac: F1 signature read @0x18000000=0x1541a9a6
[   13.227404] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1
[   13.227674] usbcore: registered new interface driver brcmfmac
[   13.228436] snd-rpi-hifiberry-dacplus soc:sound: ASoC: CODEC DAI pcm512x-hifi not registered - will retry
[   13.235594] pcm512x 1-004d: Linked as a consumer to regulator.1
[   13.240073] pcm512x 1-004d: Failed to reset device: -121
[   13.240416] pcm512x: probe of 1-004d failed with error -121
[   13.536632] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1
[   13.537446] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available
[   13.538301] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43430/1 wl0: Oct 22 2019 01:59:28 version 7.45.98.94 (r723000 CY) FWID 01-3b33decd
[   13.980751] systemd-journald[185]: Received request to flush runtime journal from PID 1
[   14.959940] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[   15.008978] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save disabled
[   16.572054] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xC5E1
[   21.787778] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
[   22.292587] uart-pl011 3f201000.serial: no DMA platform data
[   22.579255] random: crng init done
[   22.579272] random: 7 urandom warning(s) missed due to ratelimiting
[   26.856549] Bluetooth: Core ver 2.22
[   26.856623] NET: Registered protocol family 31
[   26.856627] Bluetooth: HCI device and connection manager initialized
[   26.857479] Bluetooth: HCI socket layer initialized
[   26.857498] Bluetooth: L2CAP socket layer initialized
[   26.857563] Bluetooth: SCO socket layer initialized
[   26.883984] Bluetooth: HCI UART driver ver 2.3
[   26.883999] Bluetooth: HCI UART protocol H4 registered
[   26.884062] Bluetooth: HCI UART protocol Three-wire (H5) registered
[   26.884244] Bluetooth: HCI UART protocol Broadcom registered
[   27.040108] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   27.040121] Bluetooth: BNEP filters: protocol multicast
[   27.040140] Bluetooth: BNEP socket layer initialized
[   27.386268] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save disabled

Hi, sorry for so simple questions, but
are you sure your Dac is working (previous installation, other system?
Correctly fit in the Rpi?
Is a new installation of Volumio or an update?
Can you share /data/configuration/audio_interface/alsa_controller/config.json please?

1 Like

Hi,
This is a brand new installation of Volumio.
I just tried removing the 7" touchscreen and when I do that, the DAC works!
However, I obviously need both to work.
I can’t find specific I/O usage for the DAC+ Pro, but the closest models do not appear to use the same pins. HifiBerry say the DAC and the touchscreen should work together.

Please see my alsa_controller/config.json below:

Cheers,
Stu

{
  "volumestart": {
    "type": "string",
    "value": "50"
  },
  "volumemax": {
    "type": "string",
    "value": "100"
  },
  "volumecurvemode": {
    "type": "string",
    "value": "logarithmic"
  },
  "outputdevice": {
    "type": "string",
    "value": "2"
  },
  "mixer_type": {
    "type": "string",
    "value": "undefined"
  },
  "mixer": {
    "type": "string",
    "value": ""
  },
  "volumesteps": {
    "type": "string",
    "value": "2"
  },
  "outputdevicename": {
    "type": "string",
    "value": "HiFiBerry DAC+ Pro"
  }
}

What I see in your previous log is that the Dac is not registered by the kernel. I remembered a similar problem with a Dac + touchscreen (unfortunately I never tried to fix it). Maybe @gvolt may help? :wink:

1 Like

I am running Volumio since many iterations with an original Raspberry Pi 7" touchscreen and a HifiBerry Dac+ which also uses dtoverlay=hifiberry-dacplus without issues (I know that’s not really of help :wink: ).

So my first thought would be about the connections of the display:

When you had the display connected did you use the dedictated cables for SDA and SCL? If so, try without them. They are only required for old Model A/B boards where the DSI connector does not have I2C connections. With your Pi 3B SDA and SCL signals are transmitted via the DSI ribbon cable.

1 Like

You are a legend - Disconnected the SDA and SCL wires and now everything works!
Thank you both so much for your help!

1 Like

@volumio IMHO the wiring instructions over here should state that the dedicated wires for SDA and SCL do not have to be connected except for Pi 1 A and B (without the “+”). AFAIK only these two models don’t have the SDA and SCL lines on their DSI connector (https://www.raspberrypi.org/documentation/hardware/display/legacy.md).

1 Like

I agree - that’s the guide I followed.