I just put together a new server with a Supermicro X11SSL-F motherboard and a Xeon E3-1240L v5 processor, and was trying to install openbsd 5.8 on it. The install cd freezes while booting after it probes the USB 3 devices:
>>> xhci probe won xhci0 at pci0 dev 20 function 0 "Intel 100 Series xHCI" rev 0x31: msi >>> probing for usb* >>> usb probe returned 1 >>> usb probe won usb0 at xhci0: USB revision 3.0 >>> probing for uhub* >>> uhub probe returned 10 >>> uhub probe won uhub0 at usb0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 [system freezes here] I also tried the latest snapshot install cd, same problem. If I disable xhci, the installer boots successfully, although I haven't actually tried installing yet. I don't really need usb on this box, so I'm not really concerned if it's not going to work. It's not going into production for a few weeks though, so if anybody's interested in looking at why it's broken I could provide further details or test possible fixes. Here's a dmesg of the snapshot install kernel booted without xhci: OpenBSD 5.9-current (RAMDISK_CD) #1737: Sun Mar 6 19:18:13 MST 2016 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/RAMDISK_CD real mem = 16976416768 (16189MB) avail mem = 16460062720 (15697MB) User Kernel Config UKC> do\^H \^Hiso\^H \^Hable xhci 98 xhci* disabled UKC> quit Continuing... mainbus0 at root bios0 at mainbus0: SMBIOS rev. 3.0 @ 0x7fb95000 (59 entries) bios0: vendor American Megatrends Inc. version "1.0b" date 12/29/2015 bios0: Supermicro Super Server acpi0 at bios0: rev 2 acpi0: tables DSDT FACP APIC FPDT FIDT SPMI MCFG HPET SSDT LPIT SSDT SSDT SSDT DBGP DBG2 SSDT SSDT UEFI SSDT DMAR EINJ ERST BERT HEST acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Xeon(R) CPU E3-1240L v5 @ 2.10GHz, 2100.73 MHz cpu0: 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,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SENSOR,ARAT cpu0: 256KB 64b/line 8-way L2 cache cpu0: apic clock running at 24MHz cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1, IBE cpu at mainbus0: not configured cpu at mainbus0: not configured cpu at mainbus0: not configured cpu at mainbus0: not configured cpu at mainbus0: not configured cpu at mainbus0: not configured cpu at mainbus0: not configured ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 1 (PEG0) acpiprt2 at acpi0: bus -1 (PEG1) acpiprt3 at acpi0: bus -1 (PEG2) acpiprt4 at acpi0: bus 2 (RP09) acpiprt5 at acpi0: bus 3 (RP10) acpiprt6 at acpi0: bus 4 (RP11) acpiprt7 at acpi0: bus 5 (BR4F) 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 acpicpu at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpipwrres at acpi0 not configured acpitz at acpi0 not configured acpitz at acpi0 not configured acpibat at acpi0 not configured acpibat at acpi0 not configured acpibat at acpi0 not configured acpibtn at acpi0 not configured acpibtn at acpi0 not configured acpibtn at acpi0 not configured pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 vendor "Intel", unknown product 0x1918 rev 0x07 ppb0 at pci0 dev 1 function 0 vendor "Intel", unknown product 0x1901 rev 0x07: msi pci1 at ppb0 bus 1 em0 at pci1 dev 0 function 0 "Intel 82571EB" rev 0x06: apic 2 int 16, address 00:15:17:cd:0a:a2 em1 at pci1 dev 0 function 1 "Intel 82571EB" rev 0x06: apic 2 int 17, address 00:15:17:cd:0a:a3 "Intel 100 Series xHCI" rev 0x31 at pci0 dev 20 function 0 not configured "Intel 100 Series Thermal" rev 0x31 at pci0 dev 20 function 2 not configured "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 ahci0: PHY offline on port 2 ahci0: PHY offline on port 3 ahci0: PHY offline on port 4 ahci0: PHY offline on port 5 scsibus0 at ahci0: 32 targets sd0 at scsibus0 targ 0 lun 0: <ATA, SanDisk Ultra II, X411> SCSI3 0/direct fixed naa.5001b444a442db8a sd0: 228936MB, 512 bytes/sector, 468862128 sectors, thin sd1 at scsibus0 targ 1 lun 0: <ATA, SanDisk Ultra II, X411> SCSI3 0/direct fixed naa.5001b44f2ef6eb0d sd1: 228936MB, 512 bytes/sector, 468862128 sectors, thin ppb1 at pci0 dev 29 function 0 "Intel 100 Series PCIE" rev 0xf1: msi pci2 at ppb1 bus 2 em2 at pci2 dev 0 function 0 "Intel I210" rev 0x03: msi, address 0c:c4:7a:b3:ca:54 ppb2 at pci0 dev 29 function 1 "Intel 100 Series PCIE" rev 0xf1: msi pci3 at ppb2 bus 3 em3 at pci3 dev 0 function 0 "Intel I210" rev 0x03: msi, address 0c:c4:7a:b3:ca:55 ppb3 at pci0 dev 29 function 2 "Intel 100 Series PCIE" rev 0xf1: msi pci4 at ppb3 bus 4 ppb4 at pci4 dev 0 function 0 "ASPEED Technology AST1150 PCI" rev 0x03 pci5 at ppb4 bus 5 vga1 at pci5 dev 0 function 0 "ASPEED Technology AST2000" rev 0x30 wsdisplay1 at vga1 mux 1: console (80x25, vt100 emulation) vendor "Intel", unknown product 0xa14a (class bridge subclass ISA, rev 0x31) at pci0 dev 31 function 0 not configured "Intel 100 Series PMC" rev 0x31 at pci0 dev 31 function 2 not configured "Intel 100 Series SMBus" rev 0x31 at pci0 dev 31 function 4 not configured isa0 at mainbus0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo com1: console pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay1 softraid0 at root scsibus1 at softraid0: 256 targets root on rd0a swap on rd0b dump on rd0b Thanks...