Hi again, Sorry for the delay of response, I had a "savecore: no dump" message in my logs and tried a lot to get a coredump, before realizing that there's probably no coredump at all. System just freezes when I plug a USB Stick in the USB3.0 port :{
The only new information I have from running with the XHCI_DEBUG-enabled kernel is (see new dmesg attached): wsdisplay0 at vga1 mux 1: console (std, vt100 emulation) wsdisplay0: screen 1-5 added (std, vt100 emulation) xhci0 at pci0 dev 20 function 0 "Intel 7 Series xHCI" rev 0x04: msi xhci0: xHCI version 1.0 xhci0: CAPLENGTH=0x80 xhci0: DOORBELL=0x3000 xhci0: RUNTIME=0x2000 xhci0: 32 bytes context xhci0: supported page size 0x00000001 xhci0: 8 ports and 32 slots xhci0: 16 scratch pages xhci0: USB3PRM / USB3.0 configurable ports: 0x0000000f xhci0: USB3_PSSEN / Enabled USB3.0 ports under xHCI: 0x0000000f xhci0: XUSB2PRM / USB2.0 ports can switch from EHCI to xHCI:0x0000000f xhci0: XUSB2PR / USB2.0 ports under xHCI: 0x0000000f usb0 at xhci0: USB revision 3.0 uhub0 at usb0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 xhci0: DCBAAP=00xda81d000 xhci0: CRCR=00 (00000000da81e000) xhci0: ERSTBA=00xd86f7000 xhci0: ERDP=00xda81f000 xhci0: USBCMD=0x5 xhci0: IMAN=0x2 "Intel 7 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured ehci0 at pci0 dev 26 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 16 usb1 at ehci0: USB revision 2.0 uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1 azalia0 at pci0 dev 27 function 0 "Intel 7 Series HD Audio" rev 0x04: msi
OpenBSD 5.7 (GENERIC_DEBUG) #0: Sat Oct 31 14:19:09 CET 2015 r...@gyom.home:/usr/src/sys/arch/amd64/compile/GENERIC_DEBUG real mem = 4145668096 (3953MB) avail mem = 4031422464 (3844MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xebe40 (97 entries) bios0: vendor Dell Inc. version "A07" date 10/08/2012 bios0: Dell Inc. Latitude E5530 non-vPro acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP APIC FPDT MCFG HPET SSDT SSDT SSDT DMAR ASF! ASF! BGRT acpi0: wakeup devices UAR1(S3) P0P1(S4) USB1(S3) USB2(S3) USB3(S3) USB5(S3) USB6(S3) USB7(S3) PXSX(S4) RP01(S4) PXSX(S4) RP02(S4) PXSX(S4) RP05(S4) PXSX(S4) RP06(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) Core(TM) i5-3320M CPU @ 2.60GHz, 2592.00 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,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS cpu0: 256KB 64b/line 8-way L2 cache cpu0: smt 0, core 0, package 0 mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges cpu0: apic clock running at 99MHz 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 acpimcfg0 at acpi0 addr 0xf8000000, bus 0-63 acpihpet0 at acpi0: 14318179 Hz acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus -1 (P0P1) acpiprt2 at acpi0: bus 1 (RP01) acpiprt3 at acpi0: bus 2 (RP02) acpiprt4 at acpi0: bus -1 (RP05) acpiprt5 at acpi0: bus 11 (RP06) acpiprt6 at acpi0: bus 12 (RP07) acpiprt7 at acpi0: bus -1 (RP08) acpiprt8 at acpi0: bus -1 (PEG0) acpiprt9 at acpi0: bus -1 (PEG1) acpiprt10 at acpi0: bus -1 (PEG2) acpiprt11 at acpi0: bus -1 (PEG3) acpiprt12 at acpi0: bus 3 (RP03) acpiprt13 at acpi0: bus 7 (RP04) acpiec0 at acpi0 acpicpu0 at acpi0: C3, C2, C1, PSS acpitz0 at acpi0: critical temperature is 107 degC acpibtn0 at acpi0: LID0 acpibtn1 at acpi0: PBTN acpibtn2 at acpi0: SBTN acpiac0 at acpi0: AC unit online acpibat0 at acpi0: BAT0 model "DELL 8WXJ323" serial 2310 type LION oem "SMP" acpibat1 at acpi0: BAT1 not present acpibat2 at acpi0: BAT2 not present acpivideo0 at acpi0: VID_ acpivout0 at acpivideo0: LCD_ cpu0: Enhanced SpeedStep 2592 MHz: speeds: 2601, 2600, 2500, 2400, 2300, 2200, 2100, 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel Core 3G Host" rev 0x09 vga1 at pci0 dev 2 function 0 "Intel HD Graphics 4000" rev 0x09 intagp at vga1 not configured inteldrm0 at vga1 drm0 at inteldrm0 inteldrm0: 1366x768 wsdisplay0 at vga1 mux 1: console (std, vt100 emulation) wsdisplay0: screen 1-5 added (std, vt100 emulation) xhci0 at pci0 dev 20 function 0 "Intel 7 Series xHCI" rev 0x04: msi xhci0: xHCI version 1.0 xhci0: CAPLENGTH=0x80 xhci0: DOORBELL=0x3000 xhci0: RUNTIME=0x2000 xhci0: 32 bytes context xhci0: supported page size 0x00000001 xhci0: 8 ports and 32 slots xhci0: 16 scratch pages xhci0: USB3PRM / USB3.0 configurable ports: 0x0000000f xhci0: USB3_PSSEN / Enabled USB3.0 ports under xHCI: 0x0000000f xhci0: XUSB2PRM / USB2.0 ports can switch from EHCI to xHCI:0x0000000f xhci0: XUSB2PR / USB2.0 ports under xHCI: 0x0000000f usb0 at xhci0: USB revision 3.0 uhub0 at usb0 "Intel xHCI root hub" rev 3.00/1.00 addr 1 xhci0: DCBAAP=00xda81d000 xhci0: CRCR=00 (00000000da81e000) xhci0: ERSTBA=00xd86f7000 xhci0: ERDP=00xda81f000 xhci0: USBCMD=0x5 xhci0: IMAN=0x2 "Intel 7 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured ehci0 at pci0 dev 26 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 16 usb1 at ehci0: USB revision 2.0 uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1 azalia0 at pci0 dev 27 function 0 "Intel 7 Series HD Audio" rev 0x04: msi azalia0: codecs: IDT/0x76df, Intel/0x2806, using IDT/0x76df audio0 at azalia0 ppb0 at pci0 dev 28 function 0 "Intel 7 Series PCIE" rev 0xc4: msi pci1 at ppb0 bus 1 ppb1 at pci0 dev 28 function 1 "Intel 7 Series PCIE" rev 0xc4: msi pci2 at ppb1 bus 2 "Broadcom BCM4313" rev 0x01 at pci2 dev 0 function 0 not configured ppb2 at pci0 dev 28 function 2 "Intel 7 Series PCIE" rev 0xc4: msi pci3 at ppb2 bus 3 ppb3 at pci0 dev 28 function 3 "Intel 7 Series PCIE" rev 0xc4: msi pci4 at ppb3 bus 7 ppb4 at pci0 dev 28 function 5 "Intel 7 Series PCIE" rev 0xc4: msi pci5 at ppb4 bus 11 sdhc0 at pci5 dev 0 function 0 vendor "O2 Micro", unknown product 0x8221 rev 0x05: apic 2 int 17 sdmmc0 at sdhc0 ppb5 at pci0 dev 28 function 6 "Intel 7 Series PCIE" rev 0xc4: msi pci6 at ppb5 bus 12 bge0 at pci6 dev 0 function 0 "Broadcom BCM5761" rev 0x10, BCM5761 A1 (0x5761100): msi, address e0:db:55:dd:d7:eb brgphy0 at bge0 phy 1: BCM5761 10/100/1000baseT PHY, rev. 0 ehci1 at pci0 dev 29 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 21 usb2 at ehci1: USB revision 2.0 uhub2 at usb2 "Intel EHCI root hub" rev 2.00/1.00 addr 1 pcib0 at pci0 dev 31 function 0 "Intel HM77 LPC" rev 0x04 ahci0 at pci0 dev 31 function 2 "Intel 7 Series AHCI" rev 0x04: msi, AHCI 1.3 scsibus1 at ahci0: 32 targets sd0 at scsibus1 targ 0 lun 0: <ATA, ST320LT007-9ZV14, 0005> SCSI3 0/direct fixed naa.5000c5005cc48d81 sd0: 305245MB, 512 bytes/sector, 625142448 sectors cd0 at scsibus1 targ 1 lun 0: <TSSTcorp, DVD+-RW SN-208BB, D500> ATAPI 5/cdrom removable ichiic0 at pci0 dev 31 function 3 "Intel 7 Series SMBus" rev 0x04: apic 2 int 18 iic0 at ichiic0 iic0: addr 0x29 07=ff 0f=33 10=02 11=90 12=a0 13=52 14=b1 15=20 16=1b 17=21 18=26 19=a0 1a=60 1b=62 1c=c0 1e=20 20=7f 22=40 25=40 27=ff 29=fe 2d=44 2f=20 30=95 31=25 32=0e 33=16 87=ff 8f=33 90=02 91=90 92=a0 93=52 94=b1 95=20 96=1b 97=21 98=26 99=a0 9a=60 9b=62 9c=c0 9e=20 a0=7f a2=40 a5=40 a7=ff a9=fe ab=01 ad=3e af=20 b0=95 b1=25 b2=0e b3=16 words 00=0000 01=0000 02=0000 03=0000 04=0000 05=0000 06=0000 07=ffff spdmem0 at iic0 addr 0x52: 4GB DDR3 SDRAM PC3-12800 SO-DIMM isa0 at pcib0 isadma0 at isa0 pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) pckbc0: using irq 12 for aux slot wsmouse0 at pms0 mux 0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 sdmmc0: can't enable card uhub3 at uhub1 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 uhub4 at uhub3 port 3 "O2 Micro OZ776 Hub" rev 1.10/1.10 addr 3 ugen0 at uhub4 port 2 "O2 O2Micro CCID SC Reader" rev 1.10/1.10 addr 4 ugen1 at uhub3 port 4 "Broadcom Corp BCM20702A0" rev 2.00/1.12 addr 5 uvideo0 at uhub3 port 5 configuration 1 interface 0 "001BFCEB7EE1-CB10-100F07 Laptop_Integrated_Webcam_E4HD" rev 2.00/28.08 addr 6 video0 at uvideo0 uhub5 at uhub2 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets root on sd0a (7f8ff147fb3cc733.a) swap on sd0b dump on sd0b WARNING: / was not properly unmounted ext4fs: only read-only support right now