On 2026-08-23 21:44, Atanas Vladimirov wrote:
>>Synopsis: USB keyboard dies after Supermicro BMC reset; xhci(4) endpoint
>>halted
>>Category: kernel
>>Environment:
> System : OpenBSD 8.0
> Details : OpenBSD 8.0-beta (GENERIC.MP) #108: Sat Aug 22 22:10:43
> MDT 2026
>
> [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
>
> Architecture: OpenBSD.amd64
> Machine : amd64
>>Description:
> On a Supermicro X11SSL-F the USB keyboard and mouse emulated by
> the on-board ASPEED AST2400 BMC stop responding after the BMC is
> reset, and stay dead until the host is rebooted. wskbd(4) and
> wsmouse(4) receive no further events. A GENERIC kernel prints
> nothing at all when this happens.
>
> The same behaviour is present on every release tried, 7.4 through
> -current, and on a Supermicro X10SLL-F as well. A physical USB
> keyboard on the same xhci0 keeps working; only the BMC-emulated
> HID is affected.
>
> The controller is:
>
> xhci0 at pci0 dev 20 function 0 "Intel 100 Series xHCI"
> rev 0x31: msi, xHCI 1.0
>
> and the emulated HID normally attaches behind the BMC's own hub:
>
> uhub1 at uhub0 port 9 "ATEN International product 0x7000"
> uhidev2 at uhub1 port 1 "ATEN International product 0x2419"
> ukbd1 at uhidev2, wskbd2 at ukbd1
> uhidev3 at uhub1 port 1, ums1 at uhidev3
>
> With a kernel built with "option XHCI_DEBUG" the only diagnostic
> is the HID's interrupt IN endpoint completing with a USB
> Transaction Error:
>
> xhci0: txerr? code 4
>
> Per xHCI r1.1 section 4.10.2.6 a USB Transaction Error completion
> leaves the endpoint in the Halted state. The endpoint context
> stays Halted in hardware until a Reset Endpoint command is
> issued: further doorbell rings are ignored and no transfer event
> is ever posted again.
>
> xhci_event_xfer_generic() in sys/dev/usb/xhci.c never issues that
> command. At $OpenBSD: xhci.c,v 1.136 2025/03/01 14:43:03 kirill
> Exp $:
>
> case XHCI_CODE_TXERR:
> case XHCI_CODE_SPLITERR:
> DPRINTF(("%s: txerr? code %d\n", DEVNAME(sc), code));
> xfer->status = USBD_IOERROR;
> break;
>
> After the switch the function only does "return (0)", so the
> caller xhci_event_xfer() goes on to call xhci_xfer_done(xfer) and
> usb_transfer_complete(). The transfer is completed with
> USBD_IOERROR, but no Reset Endpoint command is sent and
> xp->halted is never set. From that point the pipe is dead: the
> stack keeps queueing transfers onto an endpoint the controller
> will not run, and each one is dropped with no indication.
>
> One further observation, which is why resetting the endpoint
> alone is not sufficient on this hardware: after the BMC reset the
> device does not come back in the same topology. Instead of the
> low-speed HID behind the ATEN hub it attaches directly to uhub0
> at high speed, and that transient device's interrupt IN endpoint
> keeps failing for several seconds. With a change that only
> resets the endpoint, the softintr path never converges:
>
> xhci0: txerr? code 4
> xhci0: xhci_cmd_reset_ep_async dev 4 dci 3
> xhci0: xhci_cmd_set_tr_deq_async dev 4 dci 3
> ... forever ...
>
> Only tearing the port down and re-enumerating it recovers the
> device.
>>How-To-Repeat:
> 1. Boot an amd64 GENERIC.MP snapshot on a Supermicro X11SSL-F
> (or X10SLL-F) with the BMC iKVM keyboard and mouse enabled.
> (I beleive that other Supermicro models are affected as well)
> 2. Confirm the emulated HID attached, and that ukbd(4)/wskbd(4)
> and ums(4)/wsmouse(4) claimed it:
>
> # usbdevs -v
>
> 3. Type on the iKVM keyboard at the console. Keystrokes arrive.
> 4. Reset the BMC - use the Reset button in the BMC web interface.
> 5. Wait for the BMC to come back and for the HID to re-attach.
> 6. Type on the iKVM keyboard again. No keystrokes arrive, the
> emulated mouse is dead as well, and nothing is printed on the
> console.
> 7. Reboot the host. The keyboard works again. A BMC-emulated
> device cannot be unplugged, so this is the only recovery.
> 8. To see the completion code, rebuild the kernel with
> "option XHCI_DEBUG" and repeat steps 3 to 6. The endpoint
> reports "xhci0: txerr? code 4" and no transfer on that pipe
> ever completes afterwards.
>>Fix:
> The diff below counts consecutive USB Transaction Errors per pipe
> and lets the TXERR/SPLITERR case fall through into the existing
> STALL/BABBLE recovery, so the halted endpoint is always reset.
> Past XHCI_TXERR_RETRIES it additionally calls
> usb_needs_reattach(), so the hub explore task re-enumerates the
> device instead of the pipe retrying forever. Because
> code != XHCI_CODE_STALL on the fallthrough it lands on
> xp->halted = USBD_IOERROR, and it inherits the timeout_del(),
> usb_rem_task(), xp->aborted_xfer assignment and the completion
> chain unchanged.
>
Hello,
Any thoughts/comments?
Or this is not something that worth fixing?
Please note that the proposed fix is just that, a proposal, nothing more.
There could be something that I miss ....
Best wishes,
Atanas
> Index: sys/dev/usb/xhci.c
> ===================================================================
> --- sys/dev/usb/xhci.c
> +++ sys/dev/usb/xhci.c
> @@ -70,6 +70,7 @@ struct xhci_pipe {
> struct usbd_xfer *pending_xfers[XHCI_MAX_XFER];
> struct usbd_xfer *aborted_xfer;
> int halted;
> + u_int txerr_count;
> size_t free_trbs;
> int skip;
> #define TRB_PROCESSED_NO 0
> @@ -78,6 +79,8 @@ struct xhci_pipe {
> uint8_t trb_processed[XHCI_MAX_XFER];
> };
>
> +#define XHCI_TXERR_RETRIES 3
> +
> int xhci_reset(struct xhci_softc *);
> void xhci_suspend(struct xhci_softc *);
> int xhci_intr1(struct xhci_softc *);
> @@ -953,6 +956,7 @@ xhci_event_xfer_generic(struct xhci_softc *sc, struct
> usbd_xfer *xfer,
> usbd_xfer_isread(xfer) ?
> BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
> xfer->status = USBD_NORMAL_COMPLETION;
> + xp->txerr_count = 0;
> break;
> case XHCI_CODE_SHORT_XFER:
> /*
> @@ -977,12 +981,22 @@ xhci_event_xfer_generic(struct xhci_softc *sc, struct
> usbd_xfer *xfer,
> usbd_xfer_isread(xfer) ?
> BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
> xfer->status = USBD_NORMAL_COMPLETION;
> + xp->txerr_count = 0;
> break;
> case XHCI_CODE_TXERR:
> case XHCI_CODE_SPLITERR:
> DPRINTF(("%s: txerr? code %d\n", DEVNAME(sc), code));
> - xfer->status = USBD_IOERROR;
> - break;
> + /*
> + * A USB Transaction Error leaves the endpoint Halted
> + * (xHCI r1.1 4.10.2.6), so reset it like a STALL to
> + * let the stack restart the pipe on a clean endpoint.
> + * If the endpoint keeps failing, additionally ask the
> + * hub to re-enumerate the device instead of retrying
> + * forever.
> + */
> + if (++xp->txerr_count > XHCI_TXERR_RETRIES)
> + usb_needs_reattach(xfer->device);
> + /* FALLTHROUGH */
> case XHCI_CODE_STALL:
> case XHCI_CODE_BABBLE:
> DPRINTF(("%s: babble code %d\n", DEVNAME(sc), code));
> @@ -1623,6 +1637,7 @@ xhci_pipe_init(struct xhci_softc *sc, struct usbd_pipe
> *pipe)
>
> xp->free_trbs = xp->ring.ntrb;
> xp->halted = 0;
> + xp->txerr_count = 0;
>
> sdev->pipes[xp->dci - 1] = xp;
>
> dmesg:
> OpenBSD 8.0-beta (GENERIC.MP) #108: Sat Aug 22 22:10:43 MDT 2026
> [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> real mem = 34154913792 (32572MB)
> avail mem = 33093718016 (31560MB)
> random: good seed from bootblocks
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 3.0 @ 0x7fb76000 (62 entries)
> bios0: vendor American Megatrends Inc. version "3.6" date 04/25/2025
> bios0: Supermicro Super Server
> efi0 at bios0: UEFI 2.4
> efi0: American Megatrends rev 0x5000b
> acpi0 at bios0: ACPI 5.0
> acpi0: sleep states S0 S4 S5
> acpi0: tables DSDT FACP APIC FPDT FIDT SPMI SLIC MCFG HPET LPIT SSDT SSDT
> SSDT DBGP DBG2 SSDT SSDT UEFI SSDT DMAR BGRT
> acpi0: wakeup devices PEG0(S4) PEGP(S4) PEG1(S4) PEGP(S4) PEG2(S4) PEGP(S4)
> RP09(S4) PXSX(S4) RP10(S4) PXSX(S4) RP11(S4) PXSX(S4) RP12(S4) PXSX(S4)
> RP13(S4) PXSX(S4) [...]
> acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: Intel(R) Xeon(R) CPU E3-1220 v6 @ 3.00GHz, 3000.01 MHz, 06-9e-09, patch
> 000000fa
> 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=29c6fbf<FSGSBASE,TSC_ADJUST,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT>
> edx=bc002e00<SRBDS_CTRL,MD_CLEAR,TSXFA,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=a000c04<RSBA,MISC_PKG_CT,ENERGY_FILT,GDS_CTRL,RFDS_NO>
> cpu0: MELTDOWN
> cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB
> 64b/line 4-way L2 cache, 8MB 64b/line 16-way L3 cache
> cpu0: smt 0, core 0, package 0, type P
> 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, IBE
> cpu1 at mainbus0: apid 2 (application processor)
> cpu1: Intel(R) Xeon(R) CPU E3-1220 v6 @ 3.00GHz, 3000.00 MHz, 06-9e-09, patch
> 000000fa
> cpu1: smt 0, core 1, package 0, type P
> cpu2 at mainbus0: apid 4 (application processor)
> cpu2: Intel(R) Xeon(R) CPU E3-1220 v6 @ 3.00GHz, 3000.00 MHz, 06-9e-09, patch
> 000000fa
> cpu2: smt 0, core 2, package 0, type P
> cpu3 at mainbus0: apid 6 (application processor)
> cpu3: Intel(R) Xeon(R) CPU E3-1220 v6 @ 3.00GHz, 3000.00 MHz, 06-9e-09, patch
> 000000fa
> cpu3: smt 0, core 3, package 0, type P
> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
> acpimcfg0 at acpi0
> acpimcfg0: addr 0xe0000000, bus 0-255
> acpihpet0 at acpi0: 23999999 Hz
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpiprt1 at acpi0: bus 1 (PEG0)
> acpiprt2 at acpi0: bus 2 (PEG1)
> acpiprt3 at acpi0: bus -1 (PEG2)
> acpiprt4 at acpi0: bus 6 (RP09)
> acpiprt5 at acpi0: bus 7 (RP10)
> acpiprt6 at acpi0: bus 8 (RP11)
> acpiprt7 at acpi0: bus 9 (BR51)
> acpiprt8 at acpi0: bus -1 (RP12)
> acpiprt9 at acpi0: bus -1 (RP13)
> acpiprt10 at acpi0: bus -1 (RP01)
> acpiprt11 at acpi0: bus -1 (RP05)
> acpiprt12 at acpi0: bus -1 (RP17)
> acpiprt13 at acpi0: bus -1 (RP18)
> acpiprt14 at acpi0: bus -1 (RP19)
> acpiprt15 at acpi0: bus -1 (RP20)
> acpiprt16 at acpi0: bus -1 (RP14)
> acpiprt17 at acpi0: bus -1 (RP15)
> acpiprt18 at acpi0: bus -1 (RP16)
> acpiec0 at acpi0: not present
> acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
> com0 at acpi0 UAR1 addr 0x3f8/0x8 irq 4: ns16550a, 16 byte fifo
> com1 at acpi0 UAR2 addr 0x2f8/0x8 irq 3: ns16550a, 16 byte fifo
> com1: console
> acpicmos0 at acpi0
> "IPI0001" at acpi0 not configured
> "INT0E0C" at acpi0 not configured
> acpibtn0 at acpi0: SLPB
> intelpmc0 at acpi0: PEPD
> state 0: 0x7f:1:2:0x00:0x0000000000000060
> counter: 0x7f:64:0:0x00:0x0000000000000632
> frequency: 0
> state 1: 0x7f:1:2:0x00:0x0000000000000060
> counter: 0x7f:64:0:0x00:0x0000000000000632
> frequency: 0
> acpibtn1 at acpi0: PWRB
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> acpicpu0 at acpi0: C3(200@256 mwait.1@0x40), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpicpu1 at acpi0: C3(200@256 mwait.1@0x40), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpicpu2 at acpi0: C3(200@256 mwait.1@0x40), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpicpu3 at acpi0: C3(200@256 mwait.1@0x40), C2(200@151 mwait.1@0x33),
> C1(1000@1 mwait.1), PSS
> acpipwrres0 at acpi0: PG00, resource for PEG0
> acpipwrres1 at acpi0: PG01, resource for PEG1
> acpipwrres2 at acpi0: PG02, resource for PEG2
> acpipwrres3 at acpi0: WRST
> acpipwrres4 at acpi0: WRST
> acpipwrres5 at acpi0: WRST
> acpipwrres6 at acpi0: WRST
> acpipwrres7 at acpi0: WRST
> acpipwrres8 at acpi0: WRST
> acpipwrres9 at acpi0: WRST
> acpipwrres10 at acpi0: WRST
> acpipwrres11 at acpi0: WRST
> acpipwrres12 at acpi0: WRST
> acpipwrres13 at acpi0: WRST
> acpipwrres14 at acpi0: WRST
> acpipwrres15 at acpi0: WRST
> acpipwrres16 at acpi0: WRST
> acpipwrres17 at acpi0: WRST
> acpipwrres18 at acpi0: WRST
> acpipwrres19 at acpi0: WRST
> acpipwrres20 at acpi0: WRST
> acpipwrres21 at acpi0: WRST
> acpipwrres22 at acpi0: WRST
> acpipwrres23 at acpi0: FN00, resource for FAN0
> acpipwrres24 at acpi0: FN01, resource for FAN1
> acpipwrres25 at acpi0: FN02, resource for FAN2
> acpipwrres26 at acpi0: FN03, resource for FAN3
> acpipwrres27 at acpi0: FN04, resource for FAN4
> acpitz0 at acpi0
> acpitz0: critical temperature is 119 degC
> acpitz1 at acpi0
> acpitz1: critical temperature is 119 degC
> acpivideo0 at acpi0: GFX0
> acpivout0 at acpivideo0: DD1F
> ipmi at mainbus0 not configured
> cpu0: using VERW MDS workaround (except on vmm entry)
> cpu0: Enhanced SpeedStep 3000 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 Xeon E3-1200 v6/7 Host" rev 0x05
> ppb0 at pci0 dev 1 function 0 "Intel Core 6G PCIE" rev 0x05: msi
> pci1 at ppb0 bus 1
> ix0 at pci1 dev 0 function 0 "Intel 82599" rev 0x01, msix, 4 queues, address
> 90:e2:ba:f3:2e:1c
> ix1 at pci1 dev 0 function 1 "Intel 82599" rev 0x01, msix, 4 queues, address
> 90:e2:ba:f3:2e:1d
> ppb1 at pci0 dev 1 function 1 "Intel Core 6G PCIE" rev 0x05: msi
> pci2 at ppb1 bus 2
> ppb2 at pci2 dev 0 function 0 "IDT 89HPES12N3A" rev 0x0e
> pci3 at ppb2 bus 3
> ppb3 at pci3 dev 2 function 0 "IDT 89HPES12N3A" rev 0x0e
> pci4 at ppb3 bus 4
> em0 at pci4 dev 0 function 0 "Intel 82571EB" rev 0x06: apic 2 int 16, address
> 00:15:17:bc:a9:65
> em1 at pci4 dev 0 function 1 "Intel 82571EB" rev 0x06: apic 2 int 19, address
> 00:15:17:bc:a9:64
> ppb4 at pci3 dev 4 function 0 "IDT 89HPES12N3A" rev 0x0e
> pci5 at ppb4 bus 5
> em2 at pci5 dev 0 function 0 "Intel 82571EB" rev 0x06: apic 2 int 18, address
> 00:15:17:bc:a9:67
> em3 at pci5 dev 0 function 1 "Intel 82571EB" rev 0x06: apic 2 int 17, address
> 00:15:17:bc:a9:66
> "Intel 100 Series ISH" rev 0x31 at pci0 dev 19 function 0 not configured
> xhci0 at pci0 dev 20 function 0 "Intel 100 Series xHCI" rev 0x31: msi, xHCI
> 1.0
> 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
> pchtemp0 at pci0 dev 20 function 2 "Intel 100 Series Thermal" rev 0x31
> "Intel 100 Series MEI" rev 0x31 at pci0 dev 22 function 0 not configured
> ahci0 at pci0 dev 23 function 0 "Intel 100 Series AHCI" rev 0x31: msi, AHCI
> 1.3.1
> ahci0: port 0: 6.0Gb/s
> ahci0: port 1: 6.0Gb/s
> scsibus1 at ahci0: 32 targets
> sd0 at scsibus1 targ 0 lun 0: <ATA, SAMSUNG MZ7L33T8, JXTC>
> naa.5002538f02212827
> sd0: 3662830MB, 512 bytes/sector, 7501476528 sectors, thin
> sd1 at scsibus1 targ 1 lun 0: <ATA, SAMSUNG MZ7LM3T8, GXT5>
> naa.5002538c407c5ab3
> sd1: 3662830MB, 512 bytes/sector, 7501476528 sectors, thin
> ppb5 at pci0 dev 29 function 0 "Intel 100 Series PCIE" rev 0xf1: msi
> pci6 at ppb5 bus 6
> em4 at pci6 dev 0 function 0 "Intel I210" rev 0x03: msi, address
> ac:1f:6b:96:83:30
> ppb6 at pci0 dev 29 function 1 "Intel 100 Series PCIE" rev 0xf1: msi
> pci7 at ppb6 bus 7
> em5 at pci7 dev 0 function 0 "Intel I210" rev 0x03: msi, address
> ac:1f:6b:96:83:31
> ppb7 at pci0 dev 29 function 2 "Intel 100 Series PCIE" rev 0xf1: msi
> pci8 at ppb7 bus 8
> ppb8 at pci8 dev 0 function 0 "ASPEED Technology AST1150 PCI" rev 0x03
> pci9 at ppb8 bus 9
> "ASPEED Technology AST2000" rev 0x30 at pci9 dev 0 function 0 not configured
> pcib0 at pci0 dev 31 function 0 "Intel C232 LPC" rev 0x31
> "Intel 100 Series PMC" rev 0x31 at pci0 dev 31 function 2 not configured
> ichiic0 at pci0 dev 31 function 4 "Intel 100 Series SMBus" rev 0x31: apic 2
> int 16
> iic0 at ichiic0
> iic0: addr 0x19 00=00 01=00 02=04 03=00 04=06 05=02 06=1c 07=22 08=00 words
> 00=00ef 01=000d 02=04b0 03=0000 04=0610 05=0268 06=1c85 07=2221
> iic0: addr 0x1b 00=00 01=00 02=04 03=00 04=06 05=02 06=1c 07=22 08=00 words
> 00=00ef 01=000d 02=04b0 03=0000 04=0610 05=0268 06=1c85 07=2221
> spdmem0 at iic0 addr 0x51: 16GB DDR4 SDRAM ECC PC4-25600 with thermal sensor
> spdmem1 at iic0 addr 0x53: 16GB DDR4 SDRAM ECC PC4-25600 with thermal sensor
> isa0 at pcib0
> isadma0 at isa0
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> vmm0 at mainbus0: VMX/EPT
> efifb0 at mainbus0: 1024x768, 32bpp
> wsdisplay0 at efifb0 mux 1
> wsdisplay0: screen 0-5 added (std, vt100 emulation)
> enable mbufs in high memory
> uplcom0 at uhub0 port 6 configuration 1 interface 0 "Prolific Technology Inc.
> USB-Serial Controller" rev 1.10/3.00 addr 2
> ucom0 at uplcom0: usb0.0.00006.0
> uhidev0 at uhub0 port 8 configuration 1 interface 0 "Logitech USB Receiver"
> rev 2.00/29.00 addr 3
> uhidev0: iclass 3/1
> ukbd0 at uhidev0: 8 variable keys, 6 key codes
> wskbd0 at ukbd0 mux 1
> wskbd0: connecting to wsdisplay0
> uhidev1 at uhub0 port 8 configuration 1 interface 1 "Logitech USB Receiver"
> rev 2.00/29.00 addr 3
> uhidev1: iclass 3/1, 17 report ids
> uhidpp0 at uhidev1 device 1 keyboard " ", device 2 mouse ""
> ums0 at uhidev1 reportid 2: 16 buttons, Z and W dir
> wsmouse0 at ums0 mux 0
> ucc0 at uhidev1 reportid 3: 652 usages, 20 keys, array
> wskbd1 at ucc0 mux 1
> wskbd1: connecting to wsdisplay0
> uhid0 at uhidev1 reportid 4: input=1, output=0, feature=0
> uhub1 at uhub0 port 9 configuration 1 interface 0 "ATEN International product
> 0x7000" rev 2.00/0.00 addr 4
> uhidev2 at uhub1 port 1 configuration 1 interface 0 "ATEN International
> product 0x2419" rev 1.10/1.00 addr 5
> uhidev2: iclass 3/1
> ukbd1 at uhidev2: 8 variable keys, 6 key codes
> wskbd2 at ukbd1 mux 1
> wskbd2: connecting to wsdisplay0
> uhidev3 at uhub1 port 1 configuration 1 interface 1 "ATEN International
> product 0x2419" rev 1.10/1.00 addr 5
> uhidev3: iclass 3/1
> ums1 at uhidev3: 3 buttons, Z dir
> wsmouse1 at ums1 mux 0
> vscsi0 at root
> scsibus2 at vscsi0: 256 targets
> softraid0 at root
> scsibus3 at softraid0: 256 targets
> sd2 at scsibus3 targ 1 lun 0: <OPENBSD, SR RAID 1, 006>
> sd2: 953869MB, 512 bytes/sector, 1953524576 sectors
> sd3 at scsibus3 targ 2 lun 0: <OPENBSD, SR RAID 1, 006>
> sd3: 953869MB, 512 bytes/sector, 1953524576 sectors
> sd4 at scsibus3 targ 3 lun 0: <OPENBSD, SR RAID 1, 006>
> sd4: 915714MB, 512 bytes/sector, 1875383423 sectors
> root on sd4a (22c9e9d08ea8ad79.a) swap on sd4b dump on sd4b
>
> usbdevs:
> Controller /dev/usb0:
> addr 01: 8086:0000 Intel, xHCI root hub
> super speed, self powered, config 1, rev 1.00
> driver: uhub0
> addr 02: 0557:2008 Prolific Technology Inc., USB-Serial Controller
> full speed, power 100 mA, config 1, rev 3.00
> driver: uplcom0
> addr 03: 046d:c534 Logitech, USB Receiver
> full speed, power 98 mA, config 1, rev 29.00
> driver: uhidev0
> driver: uhidev1
> addr 04: 0557:7000 ATEN International, product 0x7000
> high speed, self powered, config 1, rev 0.00
> driver: uhub1
> addr 05: 0557:2419 ATEN International, product 0x2419
> low speed, power 160 mA, config 1, rev 1.00
> driver: uhidev2
> driver: uhidev3
