Hifiberry DAC+ not detected after upgrade

Hi everyone, and thanks for the great work! I have a Hifiberry DAC+ on a RP2 which was working well until the Matrix upgrade. I followed the HifiBerry DAC+ Overlay not working OOTB solution, but the sound card is still not detected. Please help me sort this out.

I have hifiberry-dacplus-overlay selected under Hardware Support. Only bcm2835 audio output devices (HDMI and headphones) are listed in the settings.

Furthermore, aplay does not list the DAC:

> aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: b1 [bcm2835 HDMI 1], device 0: bcm2835 HDMI 1 [bcm2835 HDMI 1]
  Subdevices: 3/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
card 1: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
  Subdevices: 4/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3 

Here’s my config.txt:

[pi4]
dtoverlay=rpivid-v4l2
arm_64bit=1
kernel=kernel.img

[all]
dtoverlay=vc4-fkms-v3d,cma-512
disable_overscan=1
start_x=1
disable_splash=1
disable_fw_kms_setup=1
include config-user.txt

My config-user.txt:

gpu_mem_1024=256  
gpu_mem_256=112  
gpu_mem_512=144  
sdtv_aspect=1  
start_x=1  
dtoverlay=hifiberry-dacplus
dtparam=audio=on

And my dmesg output:

[    0.000000] Booting Linux on physical CPU 0xf00
[    0.000000] Linux version 5.10.32-2-osmc (root@osmc) (gcc (Debian 8.3.0-6) 8.3.0, GNU ld (GNU Binutils for Debian) 2.31.1) #1 SMP PREEMPT Mon Aug 2 04:28:32 UTC 2021
[    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[    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 2 Model B Rev 1.1
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] Reserved memory: created CMA memory pool at 0x0ec00000, size 512 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000000000000-0x000000003b3fffff]
[    0.000000]   Normal   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x000000003b3fffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000003b3fffff]
[    0.000000] On node 0 totalpages: 242688
[    0.000000]   DMA zone: 2133 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 242688 pages, LIFO batch:63
[    0.000000] percpu: Embedded 20 pages/cpu s50892 r8192 d22836 u81920
[    0.000000] pcpu-alloc: s50892 r8192 d22836 u81920 alloc=20*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 240555
[    0.000000] Kernel command line: coherent_pool=1M snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1  vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  root=/dev/mmcblk0p2 rootfstype=ext4 rootwait quiet osmcdev=rbp2
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 416092K/970752K available (11264K kernel code, 1313K rwdata, 2904K rodata, 3072K init, 862K bss, 30372K reserved, 524288K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] ftrace: allocating 29635 entries in 58 pages
[    0.000000] ftrace: allocated 58 pages with 4 groups
[    0.000000] rcu: Preemptible hierarchical RCU implementation.
[    0.000000]  Trampoline variant of Tasks RCU enabled.
[    0.000000]  Rude variant of Tasks RCU enabled.
[    0.000000]  Tracing variant of Tasks RCU enabled.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] random: get_random_bytes called from start_kernel+0x3b4/0x584 with crng_init=0
[    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
[    0.000011] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
[    0.000029] Switching to timer-based delay loop, resolution 52ns
[    0.000370] Console: colour dummy device 80x30
[    0.000467] printk: console [tty0] enabled
[    0.000546] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=192000)
[    0.000591] pid_max: default: 32768 minimum: 301
[    0.000853] LSM: Security Framework initializing
[    0.001172] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.001214] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.003603] Disabling memory control group subsystem
[    0.003793] CPU: Testing write buffer coherency: ok
[    0.004643] CPU0: update cpu_capacity 1024
[    0.004673] CPU0: thread -1, cpu 0, socket 15, mpidr 80000f00
[    0.007151] Setting up static identity map for 0x100000 - 0x10003c
[    0.007511] rcu: Hierarchical SRCU implementation.
[    0.009085] smp: Bringing up secondary CPUs ...
[    0.011343] CPU1: update cpu_capacity 1024
[    0.011360] CPU1: thread -1, cpu 1, socket 15, mpidr 80000f01
[    0.013620] CPU2: update cpu_capacity 1024
[    0.013635] CPU2: thread -1, cpu 2, socket 15, mpidr 80000f02
[    0.015811] CPU3: update cpu_capacity 1024
[    0.015825] CPU3: thread -1, cpu 3, socket 15, mpidr 80000f03
[    0.016120] smp: Brought up 1 node, 4 CPUs
[    0.016158] SMP: Total of 4 processors activated (153.60 BogoMIPS).
[    0.016175] CPU: All CPU(s) started in HYP mode.
[    0.016190] CPU: Virtualization extensions available.
[    0.017660] devtmpfs: initialized
[    0.042173] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[    0.042582] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.042636] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[    0.073536] pinctrl core: initialized pinctrl subsystem
[    0.075631] NET: Registered protocol family 16
[    0.081116] DMA: preallocated 1024 KiB pool for atomic coherent allocations
[    0.088759] audit: initializing netlink subsys (disabled)
[    0.090567] audit: type=2000 audit(0.080:1): state=initialized audit_enabled=0 res=1
[    0.090699] thermal_sys: Registered thermal governor 'step_wise'
[    0.091527] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.091550] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.092002] Serial: AMBA PL011 UART driver
[    0.120343] bcm2835-mbox 3f00b880.mailbox: mailbox enabled
[    0.141700] raspberrypi-firmware soc:firmware: Attached to firmware from 2021-03-10T10:15:19, variant start_x
[    0.151710] raspberrypi-firmware soc:firmware: Firmware hash is 4b9ea44619376439c801684745a12299b45ae2bb
[    0.209766] Kprobes globally optimized
[    0.218408] bcm2835-dma 3f007000.dma: DMA legacy API manager, dmachans=0x1
[    0.221807] SCSI subsystem initialized
[    0.222673] usbcore: registered new interface driver usbfs
[    0.222772] usbcore: registered new interface driver hub
[    0.222886] usbcore: registered new device driver usb
[    0.225235] clocksource: Switched to clocksource arch_sys_counter
[    2.015619] VFS: Disk quotas dquot_6.6.0
[    2.015785] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    2.016121] FS-Cache: Loaded
[    2.016630] CacheFiles: Loaded
[    2.018136] simple-framebuffer 3e402000.framebuffer: framebuffer at 0x3e402000, 0x7f8000 bytes, mapped to 0x(ptrval)
[    2.018171] simple-framebuffer 3e402000.framebuffer: format=a8r8g8b8, mode=1920x1080x32, linelength=7680
[    2.019117] Console: switching to colour frame buffer device 240x67
[    2.057562] simple-framebuffer 3e402000.framebuffer: fb0: simplefb registered!
[    2.076030] NET: Registered protocol family 2
[    2.078110] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[    2.078177] TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear)
[    2.078311] TCP bind hash table entries: 8192 (order: 4, 65536 bytes, linear)
[    2.078516] TCP: Hash tables configured (established 8192 bind 8192)
[    2.078815] UDP hash table entries: 512 (order: 2, 16384 bytes, linear)
[    2.078907] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear)
[    2.080033] NET: Registered protocol family 1
[    2.081559] RPC: Registered named UNIX socket transport module.
[    2.081581] RPC: Registered udp transport module.
[    2.081599] RPC: Registered tcp transport module.
[    2.081615] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    2.217668] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 5 counters available
[    2.224398] Initialise system trusted keyrings
[    2.225031] workingset: timestamp_bits=14 max_order=18 bucket_order=4
[    2.238365] zbud: loaded
[    2.241387] FS-Cache: Netfs 'nfs' registered for caching
[    2.242781] NFS: Registering the id_resolver key type
[    2.242855] Key type id_resolver registered
[    2.242874] Key type id_legacy registered
[    2.243101] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    2.243123] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[    2.244892] Key type asymmetric registered
[    2.244920] Asymmetric key parser 'x509' registered
[    2.245015] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[    2.245605] io scheduler bfq registered
[    2.258616] bcm2835-rng 3f104000.rng: hwrng registered
[    2.259334] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[    2.260814] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
[    2.281295] brd: module loaded
[    2.298951] loop: module loaded
[    2.301467] Loading iSCSI transport class v2.0-870.
[    2.304060] libphy: Fixed MDIO Bus: probed
[    2.304542] usbcore: registered new interface driver lan78xx
[    2.304649] usbcore: registered new interface driver smsc95xx
[    2.304692] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[    3.033259] Core Release: 2.80a
[    3.033285] Setting default values for core params
[    3.033326] Finished setting default values for core params
[    3.233815] Using Buffer DMA mode
[    3.233837] Periodic Transfer Interrupt Enhancement - disabled
[    3.233854] Multiprocessor Interrupt Enhancement - disabled
[    3.233875] OTG VER PARAM: 0, OTG VER FLAG: 0
[    3.233898] Dedicated Tx FIFOs mode

[    3.235483] WARN::dwc_otg_hcd_init:1074: FIQ DMA bounce buffers: virt = 8ed04000 dma = 0xced04000 len=9024
[    3.235530] FIQ FSM acceleration enabled for :
               Non-periodic Split Transactions
               Periodic Split Transactions
               High-Speed Isochronous Endpoints
               Interrupt/Control Split Transaction hack enabled
[    3.235550] dwc_otg: Microframe scheduler enabled

[    3.235810] WARN::hcd_init_fiq:457: FIQ on core 1

[    3.235833] WARN::hcd_init_fiq:458: FIQ ASM at 808fc184 length 36

[    3.235857] WARN::hcd_init_fiq:497: MPHI regs_base at bb810000
[    3.235893] dwc_otg 3f980000.usb: DWC OTG Controller
[    3.235959] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[    3.236037] dwc_otg 3f980000.usb: irq 89, io mem 0x00000000
[    3.236101] Init: Port Power? op_state=1
[    3.236119] Init: Power Port (0)
[    3.236718] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[    3.236745] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.236766] usb usb1: Product: DWC OTG Controller
[    3.236786] usb usb1: Manufacturer: Linux 5.10.32-2-osmc dwc_otg_hcd
[    3.236808] usb usb1: SerialNumber: 3f980000.usb
[    3.238195] hub 1-0:1.0: USB hub found
[    3.238311] hub 1-0:1.0: 1 port detected
[    3.240002] dwc_otg: FIQ enabled
[    3.240025] dwc_otg: NAK holdoff enabled
[    3.240043] dwc_otg: FIQ split-transaction FSM enabled
[    3.240069] Module dwc_common_port init
[    3.240648] usbcore: registered new interface driver usb-storage
[    3.241090] mousedev: PS/2 mouse device common for all mice
[    3.243160] bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer
[    3.248852] sdhci: Secure Digital Host Controller Interface driver
[    3.248870] sdhci: Copyright(c) Pierre Ossman
[    3.249663] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe
[    3.249970] sdhci-pltfm: SDHCI platform and OF driver helper
[    3.250985] ledtrig-cpu: registered to indicate activity on CPUs
[    3.251340] hid: raw HID events driver (C) Jiri Kosina
[    3.251567] usbcore: registered new interface driver usbhid
[    3.251581] usbhid: USB HID core driver
[    3.257425] Initializing XFRM netlink socket
[    3.257482] NET: Registered protocol family 17
[    3.257646] Key type dns_resolver registered
[    3.257787] Registering SWP/SWPB emulation handler
[    3.257982] registered taskstats version 1
[    3.258021] Loading compiled-in X.509 certificates
[    3.259170] Key type ._fscrypt registered
[    3.259185] Key type .fscrypt registered
[    3.259199] Key type fscrypt-provisioning registered
[    3.273221] uart-pl011 3f201000.serial: cts_event_workaround enabled
[    3.273362] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 114, base_baud = 0) is a PL011 rev2
[    3.276080] bcm2835-power bcm2835-power: Broadcom BCM2835 power domains driver
[    3.278095] sdhost: log_buf @ (ptrval) (ced03000)
[    3.327030] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[    3.330997] of_cfs_init
[    3.331225] of_cfs_init: OK
[    3.352448] Freeing unused kernel memory: 3072K
[    3.352808] Run /init as init process
[    3.352822]   with arguments:
[    3.352832]     /init
[    3.352844]   with environment:
[    3.352854]     HOME=/
[    3.352863]     TERM=linux
[    3.352875]     osmcdev=rbp2
[    3.414910] mmc0: host does not support reading read-only switch, assuming write-enable
[    3.419727] mmc0: new high speed SDHC card at address aaaa
[    3.421063] mmcblk0: mmc0:aaaa SL16G 14.8 GiB
[    3.423341]  mmcblk0: p1 p2
[    3.456007] Indeed it is in host mode hprt0 = 00021501
[    3.541844] random: fast init done
[    3.665389] usb 1-1: new high-speed USB device number 2 using dwc_otg
[    3.665615] Indeed it is in host mode hprt0 = 00001101
[    3.719329] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    3.738137] fsck: E2fsck run: /bin/e2fsck -p -C 0 /dev/mmcblk0p2
[    3.738510] fsck: Filesystem UUID: a04e061c-afee-46a8-abe1-281717a99a3a
[    3.738906] fsck: /dev/mmcblk0p2: clean, 141682/958464 files, 1332554/3826688 blocks
[    3.905714] usb 1-1: New USB device found, idVendor=0424, idProduct=9514, bcdDevice= 2.00[    3.905748] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    3.906748] hub 1-1:1.0: USB hub found
[    3.906892] hub 1-1:1.0: 5 ports detected
[    4.225340] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[    4.355919] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00, bcdDevice= 2.00
[    4.355955] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    4.359187] smsc95xx v2.0.0
[    4.563102] libphy: smsc95xx-mdiobus: probed
[    4.564291] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-3f980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:56:e2:3f
[    5.779319] systemd[1]: System time before build time, advancing clock.
[    5.857165] NET: Registered protocol family 10
[    5.859160] Segment Routing with IPv6
[    5.935867] systemd[1]: systemd 241 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid)
[    5.936846] systemd[1]: Detected architecture arm.
[    5.980095] systemd[1]: Set hostname to <tv-living>.
[    6.632536] random: systemd: uninitialized urandom read (16 bytes read)
[    6.777713] random: systemd: uninitialized urandom read (16 bytes read)
[    6.778297] systemd[1]: Listening on initctl Compatibility Named Pipe.
[    6.778894] random: systemd: uninitialized urandom read (16 bytes read)
[    6.779579] systemd[1]: Listening on udev Kernel Socket.
[    6.780648] systemd[1]: Listening on Journal Socket.
[    6.792670] systemd[1]: Starting Load Kernel Modules...
[    6.801607] systemd[1]: Starting Restore / save the current clock...
[    6.810361] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[    6.819443] systemd[1]: Starting Remount Root and Kernel File Systems...
[    6.950191] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[    7.391615] systemd-journald[152]: Received request to flush runtime journal from PID 1
[   10.974170] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[   10.980874] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned.
[   10.983290] bcm2835_vc_sm_cma_probe: Videocore shared memory driver
[   10.983317] [vc_sm_connected_init]: start
[   10.984204] [vc_sm_connected_init]: installed successfully
[   11.010241] mc: Linux media interface: v0.10
[   11.045795] bcm2835_audio bcm2835_audio: card created with 4 channels
[   11.065949] videodev: Linux video capture interface: v2.00
[   11.126277] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[   11.126283] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[   11.126288] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[   11.147330] bcm2835_audio bcm2835_audio: card created with 4 channels
[   11.169404] bcm2835_isp: module is from the staging directory, the quality is unknown, you have been warned.
[   11.175501] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.
[   11.181162] bcm2835-isp bcm2835-isp: Device node output[0] registered as /dev/video13
[   11.181874] bcm2835-isp bcm2835-isp: Device node capture[0] registered as /dev/video14
[   11.182737] bcm2835-isp bcm2835-isp: Device node capture[1] registered as /dev/video15
[   11.183328] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.
[   11.183466] bcm2835-isp bcm2835-isp: Device node stats[2] registered as /dev/video16
[   11.183500] bcm2835-isp bcm2835-isp: Register output node 0 with media controller
[   11.183528] bcm2835-isp bcm2835-isp: Register capture node 1 with media controller
[   11.183548] bcm2835-isp bcm2835-isp: Register capture node 2 with media controller
[   11.183588] bcm2835-isp bcm2835-isp: Register capture node 3 with media controller
[   11.184120] bcm2835-isp bcm2835-isp: Loaded V4L2 bcm2835-isp
[   11.568439] vc4-drm soc:gpu: bound 3f600000.firmwarekms (ops vc4_fkms_ops [vc4])
[   11.571868] vc4-drm soc:gpu: bound 3fc00000.v3d (ops vc4_v3d_ops [vc4])
[   11.571920] checking generic (3e402000 7f8000) vs hw (0 ffffffff)
[   11.571940] fb0: switching to vc4drmfb from simple
[   11.572727] Console: switching to colour dummy device 80x30
[   11.575883] [drm] Initialized vc4 0.0.0 20140616 for soc:gpu on minor 0
[   11.784159] Console: switching to colour frame buffer device 240x67
[   11.817465] bcm2835-codec bcm2835-codec: Device registered as /dev/video10
[   11.817531] bcm2835-codec bcm2835-codec: Loaded V4L2 decode
[   11.826457] bcm2835-codec bcm2835-codec: Device registered as /dev/video11
[   11.826520] bcm2835-codec bcm2835-codec: Loaded V4L2 encode
[   11.831255] pcm512x 1-004d: Failed to reset device: -121
[   11.832138] pcm512x: probe of 1-004d failed with error -121
[   11.840319] bcm2835-codec bcm2835-codec: Device registered as /dev/video12
[   11.840382] bcm2835-codec bcm2835-codec: Loaded V4L2 isp
[   11.871388] vc4-drm soc:gpu: [drm] fb0: vc4drmfb frame buffer device
[   12.373216] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[   14.368219] SMSC LAN8700 usb-001:003:01: attached PHY driver [SMSC LAN8700] (mii_bus:phy_addr=usb-001:003:01, irq=POLL)
[   14.368685] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[   14.389275] smsc95xx 1-1.1:1.0 eth0: Link is Down
[   16.485455] random: crng init done
[   16.485487] random: 7 urandom warning(s) missed due to ratelimiting
[   16.486569] smsc95xx 1-1.1:1.0 eth0: Link is Up - 100Mbps/Full - flow control off
[   16.486649] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   16.528161] 8021q: 802.1Q VLAN Support v1.8

I’m not certain if this is related, but systemctl status systemd-modules-load.service outputs the following error:

> systemctl status systemd-modules-load.service
● systemd-modules-load.service - Load Kernel Modules
   Loaded: loaded (/lib/systemd/system/systemd-modules-load.service; static; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sat 2021-08-28 21:50:35 EDT; 17min ago
     Docs: man:systemd-modules-load.service(8)
           man:modules-load.d(5)
  Process: 229 ExecStart=/lib/systemd/systemd-modules-load (code=exited, status=1/FAILURE)
 Main PID: 229 (code=exited, status=1/FAILURE)

Aug 28 21:50:35 tv-living systemd[1]: Starting Load Kernel Modules...
Aug 28 21:50:35 tv-living systemd-modules-load[229]: Failed to find module 'snd_soc_bcm2708_i2s'
Aug 28 21:50:35 tv-living systemd-modules-load[229]: Module 'bcm2708_dmaengine' is builtin
Aug 28 21:50:35 tv-living systemd[1]: systemd-modules-load.service: Main process exited, code=exited, status=1/FAILURE
Aug 28 21:50:35 tv-living systemd[1]: systemd-modules-load.service: Failed with result 'exit-code'.
Aug 28 21:50:35 tv-living systemd[1]: Failed to start Load Kernel Modules.

Thanks for reading,
Ian.

Did you try without dtparam=audio=on or alternatively with adding dtparam=audio=on before dtoverlay=hifiberry-dacplus

Thanks for your response, fzinken. Moving the dtparam line results in no change. Removing the dtparam line greys out the OSMC audio output setting, resulting in no audio, even from HDMI.

.

I believe the correct settings should be:
/boot/config-user.txt

# Audio (https://www.hifiberry.com/docs/software/configuring-linux-3-18-x/)
dtoverlay=hifiberry-dacplus
dtparam=audio=off
#force_eeprom_read=0

You can read the link with official explanation for behavior change in Kernels 5.x.x+
Also the audio device interface names have changed with Kodi 19 (Settings → System → Audio).
So instead of:

ALSA: HDMI
ALSA: @          (for the DAC+)

you will see a longer strings:

ALSA:default          (HDMI)
ALSA:sysdefault:CARD=sndrpihifiberry
2 Likes

I can confirm this working. Just tested on a clean installation of OSMC (2021.08-1).

My original setting was dtoverlay=hifiberry-dacplus-overlay which does not work anymore. The My OSMC settings app still generates this setting in /boot/config-user.txt!

Edit:
But it seems it is being worked on: [package] [mediacenter-addon-osmc] remove -overlay suffix from pi sou… · osmc/osmc@23fada6 · GitHub

Thanks for the suggestions, kurac338 and be-vero4k. I had dtparam=audio=off before the upgrade and the DAC was working. Including that line now greys out the audio output setting and no audio is output. Aplay lists no soundcards;

> aplay -l
aplay: device_list:272: no soundcards found...

Ian.

Hi everyone, and thanks for your time, particularly kurac338 whose hifiberry.com link reminded me that I have an Amp+ and not a DAC+.

Sorry for wasting your time — and mine. Sound works now.

Feeling like an idiot,
Ian.