Need some help with audio/sound (to get S/PDIF Toslink to work).

Hi there.

I'm using FreeBSD (13.0-CURRENT) since 09/2020 at my Raspberry Pi 4B as 
Home-and-Web-Server-OS with Apache, PHP, SQLite etc... And it works like 
a charm!

Furthermore I'm trying to switch with my main workstation from Win10 to 
FreeBSD too. Because the more I'm working with FreeBSD, the more I 
realize that it's the only sane OS out there.
Now, I really would like to remove my Win10 Installation, but 
unfortunately I still have an issue with FreeBSD 13.0-CURRENT for which 
I can't find solutions, even after reading the whole handbook and 
searching the www for weeks:

I've got an "SoundBlaster Audigy Rx" Soundcard with "Creative E-MU 
CA10300" Chipset, using the BSDs "EMU10Kx" Kernel Module.
The mixer shows all in/outputs right and volume-control of all analog 
I/Os is working fine with my "Behringer MS40" Speakers and "Alienware 
TactX" Headset.
BUT the digital output (S/PDIF, Toslink) does NOT work. Even if I set 
dig1/dig2/dig3 and all other outputs to "100:100" within the mixer - 
still no sound via Toslink.
With Devuan (ALSA) or Win10 (native Creative Driver) it is working 
properly. So it can't be a hardware issue.
I also tried OSS, ALSA and PulseAudio with FreeBSD, searched the web for 
hours, tried this and that, but still no sound via Toslink...
(Fortunately) this is the only Hardware-Issue I have. But it is 
important to me to get S/PDIF Toslink to work!

I hope that someone around here can give me some hints, advice, solutions...

Regards, blackfoxx


My Hardware-Setup:
http://www.sysprofile.de/id182580


dmesg.boot:
[1] ---<<BOOT>>---
[1] Copyright (c) 1992-2020 The FreeBSD Project.
[1] Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
[1] The Regents of the University of California. All rights reserved.
[1] FreeBSD is a registered trademark of The FreeBSD Foundation.
[1] FreeBSD 13.0-CURRENT #0 : Sat Dec 26 23:08:09 UTC 2020
[1] FreeBSD clang version 11.0.0 (git_at_github.com:llvm/llvm-project.git 
llvmorg-11.0.0-rc2-0-g414f32a9e86)
[1] WARNING: WITNESS option enabled, expect reduced performance.
[1] VT(efifb): resolution 1280x800
[1] FreeBSD: initialize and check features (__FreeBSD_version 1300133).
[1] CPU: Intel(R) Core(TM) i7-3820 CPU _at_ 3.60GHz (3200.19-MHz K8-class CPU)
[1] Origin="GenuineIntel" Id=0x206d7 Family=0x6 Model=0x2d Stepping=7
[1]Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
[1]Features2=0x1fbee3bf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,DCA,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX>
[1] AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
[1] AMD Features2=0x1<LAHF>
[1] XSAVE Features=0x1<XSAVEOPT>
[1] VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
[1] TSC: P-state invariant, performance statistics
[1] real memory = 17179869184 (16384 MB)
[1] avail memory = 16491573248 (15727 MB)
[1] Event timer "LAPIC" quality 600
[1] ACPI APIC Table: <INTEL DX79TO >
[1] FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
[1] FreeBSD/SMP: 1 package(s) x 4 core(s) x 2 hardware threads
[1] FreeBSD/SMP Online: 1 package(s) x 4 core(s)
[1] random: unblocking device.
[1] Firmware Warning (ACPI): 32/64X length mismatch in 
FADT/Pm1aEventBlock: 32/16 (20201113/tbfadt-748)
[1] Firmware Warning (ACPI): 32/64X length mismatch in 
FADT/PmTimerBlock: 32/24 (20201113/tbfadt-748)
[1] Firmware Warning (ACPI): Invalid length for FADT/Pm1aEventBlock: 16, 
using default 32 (20201113/tbfadt-850)
[1] Firmware Warning (ACPI): Invalid length for FADT/PmTimerBlock: 24, 
using default 32 (20201113/tbfadt-850)
[1] ioapic1 <Version 2.0> irqs 24-47
[1] ioapic0 <Version 2.0> irqs 0-23
[1] Launching APs: 2 1 3
[1] random: entropy device external interface
[1] WARNING: Device "kbd" is Giant locked and may be deleted before 
FreeBSD 13.0.
[1] kbd1 at kbdmux0
[1] 000.000039 [4346] netmap_init netmap: loaded module
[1] [ath_hal] loaded
[1] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX 
platforms 440.100 Fri May 29 08:11:49 UTC 2020
[1] nexus0
[1] efirtc0: <EFI Realtime Clock>
[1] efirtc0: registered as a time-of-day clock, resolution 1.000000s
[1] cryptosoft0: <software crypto>
[1] aesni0: <AES-CBC,AES-CCM,AES-GCM,AES-ICM,AES-XTS>
[1] acpi0: <INTEL DX79TO>
[1] acpi0: Power Button (fixed)
[1] cpu0: <ACPI CPU> on acpi0
[1] atrtc0: <AT realtime clock> port 0x70-0x71,0x74-0x77 irq 8 on acpi0
[1] atrtc0: registered as a time-of-day clock, resolution 1.000000s
[1] Event timer "RTC" frequency 32768 Hz quality 0
[1] attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0
[1] Timecounter "i8254" frequency 1193182 Hz quality 0
[1] Event timer "i8254" frequency 1193182 Hz quality 100
[1] hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed03fff on acpi0
[1] Timecounter "HPET" frequency 14318180 Hz quality 950
[1] Event timer "HPET" frequency 14318180 Hz quality 550
[1] Event timer "HPET1" frequency 14318180 Hz quality 440
[1] Event timer "HPET2" frequency 14318180 Hz quality 440
[1] Event timer "HPET3" frequency 14318180 Hz quality 440
[1] Event timer "HPET4" frequency 14318180 Hz quality 440
[1] Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
[1] acpi_timer0: <24-bit timer at 3.579545MHz> port 0x408-0x40b on acpi0
[1] acpi_button0: <Sleep Button> on acpi0
[1] pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
[1] pci0: <ACPI PCI bus> on pcib0
[1] pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
[1] pci1: <ACPI PCI bus> on pcib1
[1] pcib2: <ACPI PCI-PCI bridge> at device 1.1 on pci0
[1] pci2: <ACPI PCI bus> on pcib2
[1] xhci0: <NEC uPD720200 USB 3.0 controller> mem 0xeb300000-0xeb301fff 
irq 16 at device 0.0 on pci2
[1] xhci0: 32 bytes context size, 32-bit DMA
[1] usbus0: waiting for BIOS to give up control
[1] usbus0 on xhci0
[1] usbus0: 5.0Gbps Super Speed USB v3.0
[1] pcib3: <ACPI PCI-PCI bridge> at device 2.0 on pci0
[1] pci3: <ACPI PCI bus> on pcib3
[1] xhci1: <XHCI (generic) USB 3.0 controller> mem 0xeb200000-0xeb201fff 
irq 16 at device 0.0 on pci3
[1] xhci1: 64 bytes context size, 32-bit DMA
[1] usbus1: waiting for BIOS to give up control
[1] usbus1: timed out waiting for BIOS
[1] usbus1 on xhci1
[1] usbus1: 5.0Gbps Super Speed USB v3.0
[1] pcib4: <ACPI PCI-PCI bridge> at device 3.0 on pci0
[1] pci4: <ACPI PCI bus> on pcib4
[1] vgapci0: <VGA-compatible display> port 0x2000-0x207f mem 
0xea000000-0xeaffffff,0xe0000000-0xe7ffffff,0xe8000000-0xe9ffffff irq 16 
at device 0.0 on pci4
[1] nvidia0: <Unknown> on vgapci0
[1] vgapci0: child nvidia0 requested pci_enable_io
[1] vgapci0: child nvidia0 requested pci_enable_io
[1] vgapci0: Boot video device
[1] hdac0: <NVIDIA (0x0e0a) HDA Controller> mem 0xeb000000-0xeb003fff 
irq 17 at device 0.1 on pci4
[1] pcib5: <ACPI PCI-PCI bridge> at device 17.0 on pci0
[1] pci5: <ACPI PCI bus> on pcib5
[1] pci0: <simple comms> at device 22.0 (no driver attached)
[1] em0: <Intel(R) PRO/1000 Network Connection> port 0x3040-0x305f mem 
0xeb400000-0xeb41ffff,0xeb421000-0xeb421fff irq 20 at device 25.0 on pci0
[1] em0: Using 1024 TX descriptors and 1024 RX descriptors
[1] em0: Using an MSI interrupt
[1] em0: Ethernet address: 54:be:f7:08:d6:34
[1] em0: netmap queues/slots: TX 1/1024, RX 1/1024
[1] ehci0: <Intel Patsburg USB 2.0 controller> mem 0xeb501000-0xeb5013ff 
irq 16 at device 26.0 on pci0
[1] usbus2: EHCI version 1.0
[1] usbus2 on ehci0
[1] usbus2: 480Mbps High Speed USB v2.0
[1] pcib6: <ACPI PCI-PCI bridge> at device 28.0 on pci0
[1] pci6: <ACPI PCI bus> on pcib6
[1] pcib7: <PCI-PCI bridge> mem 0xeb100000-0xeb10ffff at device 0.0 on pci6
[1] pci7: <PCI bus> on pcib7
[1] emu10kx0: <Creative Audigy 2 Value (Unknown model) [SB????]> port 
0x1000-0x103f irq 16 at device 0.0 on pci7
[1] pcm0: <EMU10Kx DSP front PCM interface> on emu10kx0
[1] pcm0: <SigmaTel STAC9750/51 AC97 Codec>
[1] pcm1: <EMU10Kx DSP rear PCM interface> on emu10kx0
[1] pcm2: <EMU10Kx DSP center PCM interface> on emu10kx0
[1] pcm3: <EMU10Kx DSP subwoofer PCM interface> on emu10kx0
[1] ehci1: <Intel Patsburg USB 2.0 controller> mem 0xeb502000-0xeb5023ff 
irq 23 at device 29.0 on pci0
[1] usbus3: EHCI version 1.0
[1] usbus3 on ehci1
[1] usbus3: 480Mbps High Speed USB v2.0
[1] pcib8: <ACPI PCI-PCI bridge> at device 30.0 on pci0
[1] pci8: <ACPI PCI bus> on pcib8
[1] isab0: <PCI-ISA bridge> at device 31.0 on pci0
[1] isa0: <ISA bus> on isab0
[1] ahci0: <Intel Patsburg AHCI SATA controller> port 
0x3068-0x306f,0x3074-0x3077,0x3060-0x3067,0x3070-0x3073,0x3020-0x303f 
mem 0xeb423000-0xeb4237ff irq 18 at device 31.2 on pci0
[1] ahci0: AHCI v1.30 with 6 6Gbps ports, Port Multiplier not supported
[1] ahcich0: <AHCI channel> at channel 0 on ahci0
[1] ahcich1: <AHCI channel> at channel 1 on ahci0
[1] ahcich2: <AHCI channel> at channel 2 on ahci0
[1] ahcich3: <AHCI channel> at channel 3 on ahci0
[1] ahcich4: <AHCI channel> at channel 4 on ahci0
[1] ahcich5: <AHCI channel> at channel 5 on ahci0
[1] ahciem0: <AHCI enclosure management bridge> on ahci0
[1] tpm0: <Trusted Platform Module> iomem 0xfed40000-0xfed44fff on acpi0
[1] tpm: WEC WPCT200 rev 0x46
[1] WARNING: Device "tpm" is Giant locked and may be deleted before 
FreeBSD 13.0.
[1] orm0: <ISA Option ROM> at iomem 0xd1800-0xd27ff pnpid ORM0000 on isa0
[1] atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
[1] atkbd0: <AT Keyboard> irq 1 on atkbdc0
[1] kbd0 at atkbd0
[1] atkbd0: [GIANT-LOCKED]
[1] coretemp0: <CPU On-Die Thermal Sensors> on cpu0
[1] est0: <Enhanced SpeedStep Frequency Control> on cpu0
[1] Timecounters tick every 1.000 msec
[1] hdacc0: <NVIDIA (0x0040) HDA CODEC> at cad 0 on hdac0
[1] hdaa0: <NVIDIA (0x0040) Audio Function Group> at nid 1 on hdacc0
[1] pcm4: <NVIDIA (0x0040) (HDMI/DP 8ch)> at nid 4 on hdaa0
[1] pcm5: <NVIDIA (0x0040) (HDMI/DP 8ch)> at nid 5 on hdaa0
[1] pcm6: <NVIDIA (0x0040) (HDMI/DP 8ch)> at nid 6 on hdaa0
[1] pcm7: <NVIDIA (0x0040) (HDMI/DP 8ch)> at nid 7 on hdaa0
[1] Trying to mount root from ufs:/dev/ada1p2 [rw]...
[1] Root mount waiting for: usbus0 usbus1 usbus2 usbus3 CAM
[1] WARNING: WITNESS option enabled, expect reduced performance.
[1] ugen0.1: <0x1033 XHCI root HUB> at usbus0
[1] ugen2.1: <Intel EHCI root HUB> at usbus2
[1] ugen1.1: <0x1912 XHCI root HUB> at usbus1
[1] uhub0 on usbus2
[1] uhub0: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus2
[1] uhub1 on usbus0
[1] uhub1: <0x1033 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on 
usbus0
[1] uhub2 on usbus1
[1] uhub2: <0x1912 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on 
usbus1
[1] ugen3.1: <Intel EHCI root HUB> at usbus3
[1] uhub3 on usbus3
[1] uhub3: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus3
[1] ses0 at ahciem0 bus 0 scbus6 target 0 lun 0
ses0: <AHCI SGPIO Enclosure 2.00 0001> SEMB S-E-S 2.00 device
ses0: SEMB SES Device
[1] ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <Samsung SSD 840 EVO 250GB EXT0DB6Q> ACS-2 ATA SATA 3.x device
ada0: Serial Number S1DBNSAD998260X
ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 512bytes)
ada0: Command Queueing enabled
ada0: 238475MB (488397168 512 byte sectors)
ada0: quirks=0x3<4K,NCQ_TRIM_BROKEN>
[1] ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
ada1: <SanDisk SDSSDA120G Z33130RL> ACS-2 ATA SATA 3.x device
ada1: Serial Number 172910A024C1
ada1: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 512bytes)
ada1: Command Queueing enabled
ada1: 114473MB (234441648 512 byte sectors)
[1] ses0: ada0 in 'Slot 00', SATA Slot: scbus0 target 0
[1] ses0: ada1 in 'Slot 01', SATA Slot: scbus1 target 0
[1] ada2 at ahcich5 bus 0 scbus5 target 0 lun 0
ada2: <ST2000DM002-1BJ164 CS41> ACS-2 ATA SATA 3.x device
ada2: Serial Number Z4Z7YY9Z
ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 512bytes)
ada2: Command Queueing enabled
ada2: 1907729MB (3907029168 512 byte sectors)
ada2: quirks=0x1<4K>
[1] ses0: (none) in 'Slot 03', SATA Slot: scbus3 target 0
[1] ses0: ada2 in 'Slot 05', SATA Slot: scbus5 target 0
[1] cd0 at ahcich3 bus 0 scbus3 target 0 lun 0
cd0: <PIONEER BD-RW BDR-S08 1.30> Removable CD-ROM SCSI device
cd0: Serial Number MDDL002204WL
cd0: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO 8192bytes)
cd0: Attempt to query device size failed: NOT READY, Medium not present 
- tray closed
[1] uhub1: 4 ports with 4 removable, self powered
[1] uhub2: 8 ports with 8 removable, self powered
[2] uhub3: 2 ports with 2 removable, self powered
[2] uhub0: 2 ports with 2 removable, self powered
[2] Root mount waiting for: usbus2 usbus3
[2] ugen3.2: <vendor 0x8087 product 0x0024> at usbus3
[2] uhub4 on uhub3
[2] uhub4: <vendor 0x8087 product 0x0024, class 9/0, rev 2.00/0.00, addr 
2> on usbus3
[3] ugen2.2: <vendor 0x8087 product 0x0024> at usbus2
[3] uhub5 on uhub0
[3] uhub5: <vendor 0x8087 product 0x0024, class 9/0, rev 2.00/0.00, addr 
2> on usbus2
[3] Root mount waiting for: usbus2 usbus3
[3] uhub5: 6 ports with 6 removable, self powered
[4] uhub4: 8 ports with 8 removable, self powered
[4] ugen2.3: <SteelSeries Sensei Raw Gaming Mouse> at usbus2
[4] ukbd0 on uhub5
[4] ukbd0: <SteelSeries Sensei Raw Gaming Mouse, class 0/0, rev 
1.10/1.14, addr 3> on usbus2
[4] kbd2 at ukbd0
[5] Root mount waiting for: usbus2
[5] ugen2.4: <SteelSeries SteelSeries Apex Raw Gaming Keyboard> at usbus2
[5] ukbd1 on uhub5
[5] ukbd1: <SteelSeries SteelSeries Apex Raw Gaming Keyboard, class 0/0, 
rev 1.10/1.10, addr 4> on usbus2
[5] kbd3 at ukbd1
[5] mountroot: waiting for device /dev/ada1p2...
[6] lo0: link state changed to UP
[10] em0: link state changed to UP
[10] ichsmb0: <Intel Patsburg SMBus controller> port 0x3000-0x301f mem 
0xeb424000-0xeb4240ff irq 18 at device 31.3 on pci0
[10] smbus0: <System Management Bus> on ichsmb0
[10] acpi_wmi0: <ACPI-WMI mapping> on acpi0
[10] acpi_wmi0: cannot find EC device
[10] uhid0 on uhub5
[10] uhid0: <SteelSeries Sensei Raw Gaming Mouse, class 0/0, rev 
1.10/1.14, addr 3> on usbus2
[10] uhid1 on uhub5
[10] uhid1: <SteelSeries Sensei Raw Gaming Mouse, class 0/0, rev 
1.10/1.14, addr 3> on usbus2
[10] uhid2 on uhub5
[10] uhid2: <SteelSeries SteelSeries Apex Raw Gaming Keyboard, class 
0/0, rev 1.10/1.10, addr 4> on usbus2
[10] uhid3 on uhub5
[10] uhid3: <SteelSeries SteelSeries Apex Raw Gaming Keyboard, class 
0/0, rev 1.10/1.10, addr 4> on usbus2
[10] ums0 on uhub5
[10] ums0: <SteelSeries Sensei Raw Gaming Mouse, class 0/0, rev 
1.10/1.14, addr 3> on usbus2
[10] ums0: 8 buttons and [XYZ] coordinates ID=0
[11] ipfw2 (+ipv6) initialized, divert loadable, nat loadable, default 
to deny, logging disabled
[11] Security policy loaded: MAC/ntpd (mac_ntpd)
[12] acquiring duplicate lock of same type: "os.lock_mtx"
[12] 1st os.lock_mtx _at_ nvidia_os.c:900
[12] 2nd os.lock_mtx _at_ nvidia_os.c:900
[12] stack backtrace:
[12] #0 0xffffffff80c80ce1 at witness_debugger+0x71
[12] #1 0xffffffff80bedc04 at __mtx_lock_flags+0x94
[12] #2 0xffffffff82e9f5fb at os_acquire_spinlock+0x1b
[12] #3 0xffffffff82dad14c at _nv033412rm+0xc