On Tue, 24 Mar 2026 10:04:16 +0100 Alexandre Ratchov <alex_at_caoua.org> wrote: > On OpenBSD, there are usb host/hub/device combinations that don't work > well yet. Furthrmore, the usb stack runs at a low priority so it > stutters more than typical pci devices. > > Could you share your dmesg output? I sent in a bug report for the computer where the USB sound card isn't detected. Here is the dmesg for the computer with the stuttering output: OpenBSD 7.8 (GENERIC.MP) #5: Fri Mar 13 06:06:19 MDT 2026 root_at_syspatch-78-amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 34106683392 (32526MB) avail mem = 33045938176 (31515MB) random: good seed from bootblocks mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 3.1 _at_ 0xc2e74000 (62 entries) bios0: vendor HP version "R21 Ver. 02.21.01" date 08/30/2024 bios0: HP HP EliteDesk 800 G5 Desktop Mini efi0 at bios0: UEFI 2.6 efi0: HP rev 0x21501 acpi0 at bios0: ACPI 6.1 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SSDT SSDT SSDT MSDM SLIC WSMT HPET APIC MCFG SSDT SSDT SSDT LPIT WSMT SSDT TPM2 UEFI OEML SSDT DMAR SSDT SSDT SSDT ASF! FPDT BGRT acpi0: wakeup devices GLAN(S4) XHC_(S3) XDCI(S4) HDAS(S4) RP01(S4) PXSX(S4) RP02(S4) PXSX(S4) RP03(S4) PXSX(S4) RP04(S4) PXSX(S4) RP05(S4) PXSX(S4) RP06(S4) PXSX(S4) [...] acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 23999999 Hz acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM) i7-9700 CPU _at_ 3.00GHz, 2993.03 MHz, 06-9e-0d, patch 00000104 cpu0: cpuid 1 edx=bfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> ecx=77fafbff<SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND> cpu0: cpuid 6 eax=27f7<SENSOR,ARAT,PTS> ecx=9<EFFFREQ> cpu0: cpuid 7.0 ebx=29c67af<FSGSBASE,TSC_ADJUST,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT> ecx=40000000 edx=bc000e00<SRBDS_CTRL,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD> cpu0: cpuid a vers=4, gp=8, gpwidth=48, ff=3, ffwidth=48 cpu0: cpuid d.1 eax=f<XSAVEOPT,XSAVEC,XGETBV1,XSAVES> cpu0: cpuid 80000001 edx=2c100800<NXE,PAGE1GB,RDTSCP,LONG> ecx=121<LAHF,ABM,3DNOWP> cpu0: cpuid 80000007 edx=100<ITSC> cpu0: msr 10a=a0a0cab<IBRS_ALL,SKIP_L1DFL,MDS_NO,TSX_CTRL,MISC_PKG_CT,ENERGY_FILT,FB_CLEAR,RRSBA,GDS_CTRL,RFDS_NO> cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB 64b/line 4-way L2 cache, 12MB 64b/line 12-way L3 cache cpu0: smt 0, core 0, package 0 mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges cpu0: apic clock running at 24MHz cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1.1.1, IBE cpu1 at mainbus0: apid 2 (application processor) cpu1: Intel(R) Core(TM) i7-9700 CPU _at_ 3.00GHz, 2993.04 MHz, 06-9e-0d, patch 00000104 cpu1: smt 0, core 1, package 0 cpu2 at mainbus0: apid 4 (application processor) cpu2: Intel(R) Core(TM) i7-9700 CPU _at_ 3.00GHz, 2993.03 MHz, 06-9e-0d, patch 00000104 cpu2: smt 0, core 2, package 0 cpu3 at mainbus0: apid 6 (application processor) cpu3: Intel(R) Core(TM) i7-9700 CPU _at_ 3.00GHz, 2993.03 MHz, 06-9e-0d, patch 00000104 cpu3: smt 0, core 3, package 0 cpu4 at mainbus0: apid 8 (application processor) cpu4: Intel(R) Core(TM) i7-9700 CPU _at_ 3.00GHz, 2993.03 MHz, 06-9e-0d, patch 00000104 cpu4: smt 0, core 4, package 0 cpu5 at mainbus0: apid 10 (application processor) cpu5: Intel(R) Core(TM) i7-9700 CPU _at_ 3.00GHz, 2993.03 MHz, 06-9e-0d, patch 00000104 cpu5: smt 0, core 5, package 0 cpu6 at mainbus0: apid 12 (application processor) cpu6: Intel(R) Core(TM) i7-9700 CPU _at_ 3.00GHz, 2993.03 MHz, 06-9e-0d, patch 00000104 cpu6: smt 0, core 6, package 0 cpu7 at mainbus0: apid 14 (application processor) cpu7: Intel(R) Core(TM) i7-9700 CPU _at_ 3.00GHz, 2993.03 MHz, 06-9e-0d, patch 00000104 cpu7: smt 0, core 7, package 0 ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins acpimcfg0 at acpi0 acpimcfg0: addr 0xf0000000, bus 0-127 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus -1 (RP01) acpiprt2 at acpi0: bus -1 (RP02) acpiprt3 at acpi0: bus -1 (RP03) acpiprt4 at acpi0: bus -1 (RP04) acpiprt5 at acpi0: bus -1 (RP05) acpiprt6 at acpi0: bus -1 (RP06) acpiprt7 at acpi0: bus -1 (RP07) acpiprt8 at acpi0: bus 2 (RP08) acpiprt9 at acpi0: bus -1 (RP09) acpiprt10 at acpi0: bus -1 (RP10) acpiprt11 at acpi0: bus -1 (RP11) acpiprt12 at acpi0: bus -1 (RP12) acpiprt13 at acpi0: bus -1 (RP13) acpiprt14 at acpi0: bus -1 (RP14) acpiprt15 at acpi0: bus -1 (RP15) acpiprt16 at acpi0: bus -1 (RP16) acpiprt17 at acpi0: bus -1 (RP17) acpiprt18 at acpi0: bus -1 (RP18) acpiprt19 at acpi0: bus -1 (RP19) acpiprt20 at acpi0: bus -1 (RP20) acpiprt21 at acpi0: bus 1 (RP21) acpiprt22 at acpi0: bus -1 (RP22) acpiprt23 at acpi0: bus -1 (RP23) acpiprt24 at acpi0: bus -1 (RP24) acpiec0 at acpi0: not present acpiec1 at acpi0 "PNP0C14" at acpi0 not configured "PNP0C14" at acpi0 not configured acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001 acpicmos0 at acpi0 "PNP0A06" at acpi0 not configured acpibtn0 at acpi0: SLPB acpibtn1 at acpi0: PWRB "PNP0C14" at acpi0 not configured tpm0 at acpi0 TPM_ 2.0 (TIS) addr 0xfed40000/0x5000, device 0x001b15d1 rev 0x16 "USBC000" at acpi0 not configured "HPIC000C" at acpi0 not configured acpitz0 at acpi0 acpitz0: no critical temperature defined acpipwrres0 at acpi0: USBC, resource for XDCI acpipwrres1 at acpi0: V0PR acpipwrres2 at acpi0: V1PR acpipwrres3 at acpi0: V2PR acpipwrres4 at acpi0: WRST acpicpu0 at acpi0: C3(200_at_1034 mwait.1_at_0x60), C2(200_at_151 mwait.1_at_0x33), C1(1000_at_1 mwait.1), PSS acpicpu1 at acpi0: C3(200_at_1034 mwait.1_at_0x60), C2(200_at_151 mwait.1_at_0x33), C1(1000_at_1 mwait.1), PSS acpicpu2 at acpi0: C3(200_at_1034 mwait.1_at_0x60), C2(200_at_151 mwait.1_at_0x33), C1(1000_at_1 mwait.1), PSS acpicpu3 at acpi0: C3(200_at_1034 mwait.1_at_0x60), C2(200_at_151 mwait.1_at_0x33), C1(1000_at_1 mwait.1), PSS acpicpu4 at acpi0: C3(200_at_1034 mwait.1_at_0x60), C2(200_at_151 mwait.1_at_0x33), C1(1000_at_1 mwait.1), PSS acpicpu5 at acpi0: C3(200_at_1034 mwait.1_at_0x60), C2(200_at_151 mwait.1_at_0x33), C1(1000_at_1 mwait.1), PSS acpicpu6 at acpi0: C3(200_at_1034 mwait.1_at_0x60), C2(200_at_151 mwait.1_at_0x33), C1(1000_at_1 mwait.1), PSS acpicpu7 at acpi0: C3(200_at_1034 mwait.1_at_0x60), C2(200_at_151 mwait.1_at_0x33), C1(1000_at_1 mwait.1), PSS acpivideo0 at acpi0: GFX0 cpu0: Enhanced SpeedStep 2993 MHz: speeds: 3001, 3000, 2800, 2700, 2500, 2400, 2200, 2100, 1900, 1700, 1600, 1400, 1300, 1100, 1000, 800 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel Core 8G Host" rev 0x0d inteldrm0 at pci0 dev 2 function 0 "Intel UHD Graphics 630" rev 0x02 drm0 at inteldrm0 inteldrm0: msi, COFFEELAKE, gen 9 pchtemp0 at pci0 dev 18 function 0 "Intel 300 Series Thermal" rev 0x10 xhci0 at pci0 dev 20 function 0 "Intel 300 Series xHCI" rev 0x10: msi, xHCI 1.10 usb0 at xhci0: USB revision 3.0 uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 "Intel 300 Series Shared SRAM" rev 0x10 at pci0 dev 20 function 2 not configured "Intel 300 Series HECI" rev 0x10 at pci0 dev 22 function 0 not configured puc0 at pci0 dev 22 function 3 "Intel 300 Series KT" rev 0x10: ports: 16 com com4 at puc0 port 0 apic 2 int 19: ns16550a, 16 byte fifo ahci0 at pci0 dev 23 function 0 "Intel 300 Series AHCI" rev 0x10: msi, AHCI 1.3.1 ahci0: PHY offline on port 1 scsibus1 at ahci0: 32 targets ppb0 at pci0 dev 27 function 0 "Intel 300 Series PCIE" rev 0xf0: msi pci1 at ppb0 bus 1 nvme0 at pci1 dev 0 function 0 vendor "Toshiba", unknown product 0x0116 rev 0x00: msix, NVMe 1.2 nvme0: KXG50ZNV256G TOSHIBA, firmware AAHA4102, serial 38HF70MZF6FS scsibus2 at nvme0: 2 targets, initiator 0 sd0 at scsibus2 targ 1 lun 0: <NVMe, KXG50ZNV256G TOS, AAHA> sd0: 244198MB, 512 bytes/sector, 500118192 sectors ppb1 at pci0 dev 28 function 0 "Intel 300 Series PCIE" rev 0xf0: msi pci2 at ppb1 bus 2 iwx0 at pci2 dev 0 function 0 "Intel Wi-Fi 6 AX200" rev 0x1a, msix pcib0 at pci0 dev 31 function 0 "Intel Q370 LPC" rev 0x10 azalia0 at pci0 dev 31 function 3 "Intel 300 Series cAVS" rev 0x10: msi azalia0: codecs: Conexant/0x5098, Intel/0x280b, using Conexant/0x5098 audio0 at azalia0 ichiic0 at pci0 dev 31 function 4 "Intel 300 Series SMBus" rev 0x10: apic 2 int 16 iic0 at ichiic0 "Intel 300 Series SPI" rev 0x10 at pci0 dev 31 function 5 not configured em0 at pci0 dev 31 function 6 "Intel I219-LM" rev 0x10: msi, address 38:22:e2:2c:83:6e isa0 at pcib0 isadma0 at isa0 pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard pcppi0 at isa0 port 0x61 spkr0 at pcppi0 vmm0 at mainbus0: VMX/EPT efifb at mainbus0 not configured uhidev0 at uhub0 port 1 configuration 1 interface 0 "Primax Kensington Eagle Trackball" rev 2.00/6.00 addr 2 uhidev0: iclass 3/1 ums0 at uhidev0: 3 buttons, Z and W dir wsmouse0 at ums0 mux 0 uhidev1 at uhub0 port 2 configuration 1 interface 0 "Microsoft Wired Keyboard 600" rev 2.00/3.00 addr 3 uhidev1: iclass 3/1 ukbd0 at uhidev1: 8 variable keys, 6 key codes wskbd1 at ukbd0 mux 1 uhidev2 at uhub0 port 2 configuration 1 interface 1 "Microsoft Wired Keyboard 600" rev 2.00/3.00 addr 3 uhidev2: iclass 3/0, 2 report ids ucc0 at uhidev2 reportid 1: 573 usages, 20 keys, array wskbd2 at ucc0 mux 1 uhid0 at uhidev2 reportid 2: input=1, output=0, feature=0 uaudio0 at uhub0 port 5 configuration 1 interface 1 "BEHRINGER UMC404HD 192k" rev 2.00/1.35 addr 4 uaudio0: class v2, high-speed, async, channels: 4 play, 4 rec, 16 ctls audio1 at uaudio0 umidi0 at uhub0 port 5 configuration 1 interface 4 "BEHRINGER UMC404HD 192k" rev 2.00/1.35 addr 4 umidi0: (genuine USB-MIDI) umidi0: out=1, in=1 midi0 at umidi0: <USB MIDI I/F> ugen0 at uhub0 port 5 configuration 1 "BEHRINGER UMC404HD 192k" rev 2.00/1.35 addr 4 ugen1 at uhub0 port 14 "Intel Bluetooth" rev 2.01/0.01 addr 5 vscsi0 at root scsibus3 at vscsi0: 256 targets softraid0 at root scsibus4 at softraid0: 256 targets root on sd0a (ddf4540d26144ca6.a) swap on sd0b dump on sd0b inteldrm0: 1920x1080, 32bpp wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0 wskbd1: connecting to wsdisplay0 wskbd2: connecting to wsdisplay0 wsdisplay0: screen 1-5 added (std, vt100 emulation) iwx0: hw rev 0x340, fw 77.30b1cbd8.0, address 74:d8:3e:95:b6:ea uaudio0: sync play xfer, err = 6 uaudio0: sync play xfer, err = 6 uaudio0: sync play xfer, err = 6Received on Tue Mar 24 2026 - 11:08:04 CET
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