Under 05-Oct-2010 snapshot: 1. Plug in urtw device (I have a LevelOne device, don't know model as its plastic body is lost). 2. Start bittorrent client (or ftp or whatever loading urtw device). 3. Plug in any usb device - device doesn't get configured, lines not appended to dmesg, usbdevs hangs, otherwise operating system fully operational. 4. Stop loading urtw device. 5. Plug in and out any usb device - device gets configured, lines appended to dmesg.
Couldn't reproduce it with my 3COM 3RUSB10075 as it gets device timeout shortly and stops operating at all. As I have no other usb WiFi devices, can't say whether the problem is urtw-specific, or is valid for any usb WiFi or just urtw (or just my urtw). % usbdevs -dv Controller /dev/usb0: addr 1: high speed, self powered, config 1, EHCI root hub(0x0000), Intel(0x8086), rev 1.00 uhub0 port 1 addr 2: high speed, power 98 mA, config 1, WebCam(0x62c0), Sonix Technology Co., Ltd.(0x0c45), rev 1.00 uvideo0 port 2 powered port 3 powered port 4 powered port 5 addr 3: high speed, power 100 mA, unconfigured, RTL8187(0x8187), Realtek(0x0bda), rev 1.00, iSerialNumber 00116B1604AE urtw0 port 6 powered port 7 powered port 8 powered Controller /dev/usb1: addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), Intel(0x8086), rev 1.00 uhub1 port 1 powered port 2 addr 2: low speed, power 100 mA, config 1, Optical Mouse(0x003a), Genius(0x0458), rev 1.00 uhidev0 Controller /dev/usb2: addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), Intel(0x8086), rev 1.00 uhub2 port 1 powered port 2 powered Controller /dev/usb3: addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), Intel(0x8086), rev 1.00 uhub3 port 1 powered port 2 powered Controller /dev/usb4: addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), Intel(0x8086), rev 1.00 uhub4 port 1 powered port 2 powered dmesg (05-Oct-2010 snapshot), notice no dmesg lines between inserting and removing flash usb module: OpenBSD 4.8-current (GENERIC.MP) #456: Tue Oct 5 20:18:06 MDT 2010 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC.MP RTC BIOS diagnostic error 80<clock_battery> cpu0: Intel(R) Atom(TM) CPU N270 @ 1.60GHz ("GenuineIntel" 686-class) 1.60 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,EST,TM2,SSSE3,xTPR,PDCM,MOVBE real mem = 1060163584 (1011MB) avail mem = 1032794112 (984MB) mainbus0 at root bios0 at mainbus0: AT/286+ BIOS, date 10/06/08, SMBIOS rev. 2.4 @ 0xe91c0 (31 entries) bios0: vendor Acer version "v0.3110" date 10/06/2008 bios0: Acer AO531h acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SSDT HPET APIC MCFG ASF! SLIC BOOT acpi0: wakeup devices P32_(S4) UHC1(S3) UHC2(S3) UHC3(S3) UHC4(S3) ECHI(S3) EXP1(S4) EXP2(S4) EXP3(S4) EXP4(S4) AZAL(S0) MODM(S0) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 14318179 Hz acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: apic clock running at 133MHz cpu1 at mainbus0: apid 1 (application processor) cpu1: Intel(R) Atom(TM) CPU N270 @ 1.60GHz ("GenuineIntel" 686-class) 1.60 GHz cpu1: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,DS-CPL,EST,TM2,SSSE3,xTPR,PDCM,MOVBE ioapic0 at mainbus0: apid 4 pa 0xfec00000, version 20, 24 pins ioapic0: misconfigured as apic 0, remapped to apid 4 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 3 (P32_) acpiprt2 at acpi0: bus 1 (EXP1) acpiprt3 at acpi0: bus -1 (EXP2) acpiprt4 at acpi0: bus -1 (EXP3) acpiprt5 at acpi0: bus 2 (EXP4) acpiec0 at acpi0 acpicpu0 at acpi0: C3, C2, C1, PSS acpicpu1 at acpi0: C3, C2, C1, PSS acpitz0 at acpi0: critical temperature 95 degC acpibtn0 at acpi0: PWRB acpibtn1 at acpi0: LID0 acpibtn2 at acpi0: SLPB acpibat0 at acpi0: BAT1 not present acpiac0 at acpi0: AC unit online acpivideo0 at acpi0: OVGA acpivout0 at acpivideo0: CRT1 acpivout1 at acpivideo0: DTV1 acpivout2 at acpivideo0: DFP1 acpivout3 at acpivideo0: LCD_ acpivout4 at acpivideo0: DTV2 acpivout5 at acpivideo0: DFP2 bios0: ROM list: 0xc0000/0xec00! cpu0: Enhanced SpeedStep 1597 MHz: speeds: 1600, 1333, 1066, 800 MHz pci0 at mainbus0 bus 0: configuration mode 1 (bios) pchb0 at pci0 dev 0 function 0 "Intel 82945GME Host" rev 0x03 vga1 at pci0 dev 2 function 0 "Intel 82945GME Video" rev 0x03 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) intagp0 at vga1 agp0 at intagp0: aperture at 0x40000000, size 0x10000000 inteldrm0 at vga1: apic 4 int 16 (irq 11) drm0 at inteldrm0 "Intel 82945GM Video" rev 0x03 at pci0 dev 2 function 1 not configured azalia0 at pci0 dev 27 function 0 "Intel 82801GB HD Audio" rev 0x02: apic 4 int 16 (irq 11) azalia0: codecs: Realtek ALC272 audio0 at azalia0 ppb0 at pci0 dev 28 function 0 "Intel 82801GB PCIE" rev 0x02: apic 4 int 16 (irq 255) pci1 at ppb0 bus 1 ale0 at pci1 dev 0 function 0 "Attansic Technology L1E" rev 0xb0: AR8113, apic 4 int 16 (irq 11), address 00:26:9e:00:53:d1 atphy0 at ale0 phy 0: F1 10/100/1000 PHY, rev. 9 ppb1 at pci0 dev 28 function 3 "Intel 82801GB PCIE" rev 0x02: apic 4 int 19 (irq 255) pci2 at ppb1 bus 2 uhci0 at pci0 dev 29 function 0 "Intel 82801GB USB" rev 0x02: apic 4 int 16 (irq 11) uhci1 at pci0 dev 29 function 1 "Intel 82801GB USB" rev 0x02: apic 4 int 17 (irq 11) uhci2 at pci0 dev 29 function 2 "Intel 82801GB USB" rev 0x02: apic 4 int 18 (irq 11) uhci3 at pci0 dev 29 function 3 "Intel 82801GB USB" rev 0x02: apic 4 int 19 (irq 11) ehci0 at pci0 dev 29 function 7 "Intel 82801GB USB" rev 0x02: apic 4 int 16 (irq 11) usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 ppb2 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0xe2 pci3 at ppb2 bus 3 ichpcib0 at pci0 dev 31 function 0 "Intel 82801GBM LPC" rev 0x02: PM disabled pciide0 at pci0 dev 31 function 1 "Intel 82801GB IDE" rev 0x02: DMA, channel 0 configured to compatibility, channel 1 configured to compatibility pciide0: channel 0 disabled (no drives) pciide0: channel 1 ignored (disabled) ahci0 at pci0 dev 31 function 2 "Intel 82801GBM AHCI" rev 0x02: apic 4 int 17 (irq 11), AHCI 1.1 scsibus0 at ahci0: 32 targets sd0 at scsibus0 targ 0 lun 0: <ATA, ST9160310AS, 0303> SCSI3 0/direct fixed sd0: 152627MB, 512 bytes/sec, 312581808 sec total ichiic0 at pci0 dev 31 function 3 "Intel 82801GB SMBus" rev 0x02: apic 4 int 17 (irq 11) iic0 at ichiic0 spdmem0 at iic0 addr 0x51: 1GB DDR2 SDRAM non-parity PC2-5300CL5 SO-DIMM usb1 at uhci0: USB revision 1.0 uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb2 at uhci1: USB revision 1.0 uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb3 at uhci2: USB revision 1.0 uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb4 at uhci3: USB revision 1.0 uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1 isa0 at ichpcib0 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 npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16 mtrr: Pentium Pro MTRR support uvideo0 at uhub0 port 1 configuration 1 interface 0 "Sonix Technology Co., Ltd. WebCam" rev 2.00/1.00 addr 2 video0 at uvideo0 umass0 at uhub0 port 3 configuration 1 interface 0 "HTC Android Phone" rev 2.00/1.00 addr 3 umass0: using SCSI over Bulk-Only scsibus1 at umass0: 2 targets, initiator 0 sd1 at scsibus1 targ 1 lun 0: <HTC, Android Phone, 0100> SCSI2 0/direct removable sd1: drive offline uhidev0 at uhub1 port 2 configuration 1 interface 0 "Genius Optical Mouse" rev 1.10/1.00 addr 2 uhidev0: iclass 3/1 ums0 at uhidev0: 3 buttons, Z dir wsmouse1 at ums0 mux 0 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root root on sd0a swap on sd0b dump on sd0b urtw0 at uhub0 port 5 "Realtek RTL8187" rev 2.00/1.00 addr 3 urtw0: RTL8187 rev 0x04, RFv2, address 00:11:6b:16:04:ae umass0 at uhub0 port 3 configuration 1 interface 0 " USB FLASH DRIVE" rev 2.00/1.00 addr 4 umass0: using SCSI over Bulk-Only scsibus1 at umass0: 2 targets, initiator 0 sd1 at scsibus1 targ 1 lun 0: <, USB FLASH DRIVE, PMAP> SCSI0 0/direct removable sd1: 984MB, 512 bytes/sec, 2015232 sec total sd1 detached scsibus1 detached umass0 detached Data modified on freelist: word 5 of object 0xd24ec000 size 0xffc previous type devbuf (0xefffeecb != 0xefffeecc) ehci_idone: ex=0xd20b2800 is done! urtw0 detached umass0 at uhub0 port 3 configuration 1 interface 0 " USB FLASH DRIVE" rev 2.00/1.00 addr 3 umass0: using SCSI over Bulk-Only scsibus1 at umass0: 2 targets, initiator 0 sd1 at scsibus1 targ 1 lun 0: <, USB FLASH DRIVE, PMAP> SCSI0 0/direct removable sd1: 984MB, 512 bytes/sec, 2015232 sec total sd1 detached scsibus1 detached umass0 detached urtw0 at uhub0 port 5 "Realtek RTL8187" rev 2.00/1.00 addr 3 urtw0: RTL8187 rev 0x04, RFv2, address 00:11:6b:16:04:ae -- Dmitrij D. Czarkoff