I just downloaded and installed the Dec 23 snapshot. The install goes fine. However, when I reboot and sit at the login: prompt for a few seconds, a panic screen appears. I could't capture the screen, so I took a picture of it.
The picture of the screen is here: https://archive.mgm51.com/OpenBSD5.9-current-20151223-snapshot.jpg The install was all the defaults, using dhcp for IPv4 and rtsol for IPv6. If there's anything I can provide, let me know. I could not get a dmesg before the panic occurred, so here's the dmesg taken with the live shell: OpenBSD 5.9-beta (RAMDISK_CD) #1608: Wed Dec 23 01:48:01 MST 2015 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/RAMDISK_CD real mem = 6348410880 (6054MB) avail mem = 6154293248 (5869MB) mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.3 @ 0xf0450 (68 entries) bios0: vendor Dell Inc. version "2.4.0" date 05/24/2007 bios0: Dell Inc. Dell DM061 acpi0 at bios0: rev 2 acpi0: tables DSDT FACP SSDT APIC BOOT MCFG HPET DUMY SLIC acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM)2 CPU 6420 @ 2.13GHz, 2128.29 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,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,NXE,LONG,LAHF,PERF,SENSOR cpu0: 4MB 64b/line 16-way L2 cache cpu0: apic clock running at 266MHz cpu0: mwait min=64, max=64, C-substates=0.2, IBE cpu at mainbus0: not configured ioapic0 at mainbus0: apid 8 pa 0xfec00000, version 20, 24 pins ioapic0: misconfigured as apic 0, remapped to apid 8 acpiprt0 at acpi0: bus 3 (PCI4) acpiprt1 at acpi0: bus 2 (PCI2) acpiprt2 at acpi0: bus -1 (PCI3) acpiprt3 at acpi0: bus 1 (PCI1) acpiprt4 at acpi0: bus -1 (PCI5) acpiprt5 at acpi0: bus -1 (PCI6) acpiprt6 at acpi0: bus 0 (PCI0) memory map conflict 0xbf655c00/0x9aa400 pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel 82G965 Host" rev 0x02 ppb0 at pci0 dev 1 function 0 "Intel 82G965 PCIE" rev 0x02: msi pci1 at ppb0 bus 1 vga1 at pci0 dev 2 function 0 "Intel 82G965 Video" rev 0x02 wsdisplay1 at vga1 mux 1: console (80x25, vt100 emulation) "Intel 82G965 Video" rev 0x02 at pci0 dev 2 function 1 not configured uhci0 at pci0 dev 26 function 0 "Intel 82801H USB" rev 0x02: apic 8 int 16 uhci1 at pci0 dev 26 function 1 "Intel 82801H USB" rev 0x02: apic 8 int 17 ehci0 at pci0 dev 26 function 7 "Intel 82801H USB" rev 0x02: apic 8 int 22 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 ppb1 at pci0 dev 28 function 0 "Intel 82801H PCIE" rev 0x02: msi pci2 at ppb1 bus 2 em0 at pci2 dev 0 function 0 "Intel 82572EI" rev 0x06: apic 8 int 16, address 00:15:17:24:0f:0b uhci2 at pci0 dev 29 function 0 "Intel 82801H USB" rev 0x02: apic 8 int 23 uhci3 at pci0 dev 29 function 1 "Intel 82801H USB" rev 0x02: apic 8 int 17 uhci4 at pci0 dev 29 function 2 "Intel 82801H USB" rev 0x02: apic 8 int 18 ehci1 at pci0 dev 29 function 7 "Intel 82801H USB" rev 0x02: apic 8 int 23 usb1 at ehci1: USB revision 2.0 uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1 ppb2 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0xf2 pci3 at ppb2 bus 3 em1 at pci3 dev 2 function 0 "Intel 82540EM" rev 0x02: apic 8 int 18, address 00:07:e9:0f:29:cf em2 at pci3 dev 3 function 0 "Intel 82540EM" rev 0x02: apic 8 int 19, address 00:07:e9:09:b8:da "Intel 82801HH LPC" rev 0x02 at pci0 dev 31 function 0 not configured pciide0 at pci0 dev 31 function 2 "Intel 82801H SATA" rev 0x02: DMA, channel 0 configured to native-PCI, channel 1 configured to native-PCI pciide0: using apic 8 int 20 for native-PCI interrupt wd0 at pciide0 channel 0 drive 0: <ST3250620AS> wd0: 16-sector PIO, LBA48, 238475MB, 488397168 sectors wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 6 "Intel 82801H SMBus" rev 0x02 at pci0 dev 31 function 3 not configured pciide1 at pci0 dev 31 function 5 "Intel 82801H SATA" rev 0x02: DMA, channel 0 wired to native-PCI, channel 1 wired to native-PCI pciide1: using apic 8 int 20 for native-PCI interrupt usb2 at uhci0: USB revision 1.0 uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb3 at uhci1: USB revision 1.0 uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb4 at uhci2: USB revision 1.0 uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb5 at uhci3: USB revision 1.0 uhub5 at usb5 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb6 at uhci4: USB revision 1.0 uhub6 at usb6 "Intel UHCI root hub" rev 1.00/1.00 addr 1 isa0 at mainbus0 pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay1 umass0 at uhub0 port 3 configuration 1 interface 0 "USB 2.0 Flash Disk" rev 2.00/11.00 addr 2 umass0: using SCSI over Bulk-Only scsibus0 at umass0: 2 targets, initiator 0 sd0 at scsibus0 targ 1 lun 0: <USB 2.0, Flash Disk, 1100> SCSI0 0/direct removable serial.090c1000000000003835 sd0: 967MB, 512 bytes/sector, 1981440 sectors uhidev0 at uhub5 port 1 configuration 1 interface 0 "CHESEN PS2 to USB Converter" rev 1.10/0.10 addr 2 uhidev0: iclass 3/1 ukbd0 at uhidev0 wskbd1 at ukbd0 mux 1 wskbd1: connecting to wsdisplay1 uhidev1 at uhub5 port 1 configuration 1 interface 1 "CHESEN PS2 to USB Converter" rev 1.10/0.10 addr 2 uhidev1: iclass 3/1, 3 report ids uhid at uhidev1 reportid 1 not configured uhid at uhidev1 reportid 2 not configured uhid at uhidev1 reportid 3 not configured "Prolific Technology Inc. USB-Serial Controller D" rev 1.10/4.00 addr 2 at uhub6 port 1 not configured softraid0 at root scsibus1 at softraid0: 256 targets root on rd0a swap on rd0b dump on rd0b WARNING: R/W mount of /mnt denied. Filesystem is not clean - run fsck