hi @misc any suggestions beside UKC disable?
/bsd: ohci0: 1 scheduling overruns /bsd: ohci0: 4 scheduling overruns /bsd: ohci0: 1 scheduling overruns /bsd: ohci0: 1 scheduling overruns /bsd: ohci0: 2 scheduling overruns /bsd: ohci0: 2 scheduling overruns /bsd: ohci0: 3 scheduling overruns /bsd: ohci0: 1 scheduling overruns /bsd: ohci0: 4 scheduling overruns /bsd: ohci0: 2 scheduling overruns /bsd: ohci0: 1 scheduling overruns last message repeated 5 times /bsd: ohci0: 2 scheduling overruns /bsd: ohci0: 2 scheduling overruns /bsd: ohci0: 1 scheduling overruns last message repeated 3 times /bsd: ohci0: 2 scheduling overruns /bsd: ohci0: 1 scheduling overruns last message repeated 2 times /bsd: ohci0: 2 scheduling overruns /bsd: ohci0: 1 scheduling overruns thanks -- OpenBSD 4.4-beta (GENERIC.MP) #1765: Sun Jul 6 13:08:28 MDT 2008 [EMAIL PROTECTED]:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 2133229568 (2034MB) avail mem = 2071379968 (1975MB) mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xf0000 (71 entries) bios0: vendor Dell Inc. version "2.1.6" date 05/04/2008 bios0: Dell Inc. OptiPlex 740 Enhanced acpi0 at bios0: rev 0 acpi0: tables DSDT FACP BOOT SSDT ASF! HPET MCFG SLIC APIC acpi0: wakeup devices HUB0(S5) XVRA(S5) XVRB(S5) XVRC(S5) USB0(S3) USB2(S3) AZAD(S5) MMAC(S5) MMCI(S5) UAR1(S5) PS2M(S4) PS2K(S4) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 25000000 Hz acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: AMD Athlon(tm) 64 X2 Dual Core Processor 4800+, 2505.61 MHz cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,CX16,NXE,MMXX,FFXSR,LONG,3DNOW2,3DNOW cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line 16-way L2 cache cpu0: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative cpu0: DTLB 32 4KB entries fully associative, 8 4MB entries fully associative cpu0: apic clock running at 200MHz cpu1 at mainbus0: apid 1 (application processor) cpu1: AMD Athlon(tm) 64 X2 Dual Core Processor 4800+, 2505.23 MHz cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,CX16,NXE,MMXX,FFXSR,LONG,3DNOW2,3DNOW cpu1: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line 16-way L2 cache cpu1: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative cpu1: DTLB 32 4KB entries fully associative, 8 4MB entries fully associative ioapic0 at mainbus0 apid 4 pa 0xfec00000, version 11, 24 pins ioapic0: misconfigured as apic 0, remapped to apid 4 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 4 (HUB0) acpicpu0 at acpi0: PSS acpicpu1 at acpi0: PSS acpibtn0 at acpi0: PWRB cpu0: PowerNow! K8 2505 MHz: speeds: 2500 2400 2200 2000 1800 1000 MHz pci0 at mainbus0 bus 0: configuration mode 1 "NVIDIA C51 Host" rev 0xa2 at pci0 dev 0 function 0 not configured "NVIDIA C51 Memory" rev 0xa2 at pci0 dev 0 function 1 not configured "NVIDIA C51 Memory" rev 0xa2 at pci0 dev 0 function 2 not configured "NVIDIA C51 Memory" rev 0xa2 at pci0 dev 0 function 3 not configured "NVIDIA C51 Memory" rev 0xa2 at pci0 dev 0 function 4 not configured "NVIDIA C51 Memory" rev 0xa2 at pci0 dev 0 function 5 not configured "NVIDIA C51 Memory" rev 0xa2 at pci0 dev 0 function 6 not configured "NVIDIA C51 Memory" rev 0xa2 at pci0 dev 0 function 7 not configured ppb0 at pci0 dev 2 function 0 "NVIDIA C51 PCIE" rev 0xa1 pci1 at ppb0 bus 1 ppb1 at pci0 dev 3 function 0 "NVIDIA C51 PCIE" rev 0xa1 pci2 at ppb1 bus 2 bge0 at pci2 dev 0 function 0 "Broadcom BCM5754" rev 0x02, BCM5754/5787 A2 (0xb002): apic 4 int 14 (irq 14), address 00:1e:c9:2e:0b:a3 brgphy0 at bge0 phy 1: BCM5787 10/100/1000baseT PHY, rev. 0 ppb2 at pci0 dev 4 function 0 "NVIDIA C51 PCIE" rev 0xa1 pci3 at ppb2 bus 3 vga1 at pci3 dev 0 function 0 vendor "ATI", unknown product 0x715f rev 0x00 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) vendor "ATI", unknown product 0x717f (class display subclass miscellaneous, rev 0x00) at pci3 dev 0 function 1 not configured "NVIDIA MCP51 Host" rev 0xa2 at pci0 dev 9 function 0 not configured pcib0 at pci0 dev 10 function 0 "NVIDIA MCP51 ISA" rev 0xa3 nviic0 at pci0 dev 10 function 1 "NVIDIA MCP51 SMBus" rev 0xa3 iic0 at nviic0 spdmem0 at iic0 addr 0x52: 1GB DDR2 SDRAM non-parity PC2-5300CL5 spdmem1 at iic0 addr 0x53: 1GB DDR2 SDRAM non-parity PC2-5300CL5 iic1 at nviic0 "NVIDIA MCP51 Memory" rev 0xa3 at pci0 dev 10 function 2 not configured ohci0 at pci0 dev 11 function 0 "NVIDIA MCP51 USB" rev 0xa3: apic 4 int 15 (irq 15), version 1.0, legacy support ehci0 at pci0 dev 11 function 1 "NVIDIA MCP51 USB" rev 0xa3: apic 4 int 5 (irq 5) usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "NVIDIA EHCI root hub" rev 2.00/1.00 addr 1 pciide0 at pci0 dev 14 function 0 "NVIDIA MCP51 SATA" rev 0xa1: DMA pciide0: using apic 4 int 10 (irq 10) for native-PCI interrupt wd0 at pciide0 channel 0 drive 0: <WDC WD800JD-75MSA3> wd0: 16-sector PIO, LBA48, 76293MB, 156250000 sectors wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5 atapiscsi0 at pciide0 channel 1 drive 0 scsibus0 at atapiscsi0: 2 targets, initiator 7 cd0 at scsibus0 targ 0 lun 0: <PBDS, CDRWDVD DH-48C2S, ND11> ATAPI 5/cdrom removable cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 5 pciide1 at pci0 dev 15 function 0 "NVIDIA MCP51 SATA" rev 0xa1: DMA pciide1: using apic 4 int 11 (irq 11) for native-PCI interrupt ppb3 at pci0 dev 16 function 0 "NVIDIA MCP51 PCI-PCI" rev 0xa2 pci4 at ppb3 bus 4 azalia0 at pci0 dev 16 function 1 "NVIDIA MCP51 HD Audio" rev 0xa2: apic 4 int 11 (irq 11) azalia0: codec[s]: Sigmatel STAC9200 audio0 at azalia0 pchb0 at pci0 dev 24 function 0 "AMD AMD64 0Fh HyperTransport" rev 0x00 pchb1 at pci0 dev 24 function 1 "AMD AMD64 0Fh Address Map" rev 0x00 pchb2 at pci0 dev 24 function 2 "AMD AMD64 0Fh DRAM Cfg" rev 0x00 kate0 at pci0 dev 24 function 3 "AMD AMD64 0Fh Misc Cfg" rev 0x00: core rev BH-G2 isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo 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 pcppi0 at isa0 port 0x61 midi0 at pcppi0: <PC speaker> spkr0 at pcppi0 lpt0 at isa0 port 0x378/4 irq 7 usb1 at ohci0: USB revision 1.0 uhub1 at usb1 "NVIDIA OHCI root hub" rev 1.00/1.00 addr 1 mtrr: Pentium Pro MTRR support uhidev0 at uhub1 port 5 configuration 1 interface 0 "Dell Dell USB Keyboard" rev 1.10/1.00 addr 2 uhidev0: iclass 3/1 ukbd0 at uhidev0: 8 modifier keys, 6 key codes wskbd1 at ukbd0 mux 1 wskbd1: connecting to wsdisplay0 uhidev1 at uhub1 port 6 configuration 1 interface 0 "Dell product 0x3010" rev 2.00/2.20 addr 3 uhidev1: iclass 3/1 ums0 at uhidev1: 3 buttons, Z dir wsmouse0 at ums0 mux 0 softraid0 at root root on wd0a swap on wd0b dump on wd0b