Hi, I recently updated my laptop, an Inspiron 17 7000, from 10.0-RELEASE/amd64 to 10.0-STABLE/amd 64 r263710. Unfortunately, this revision results in a unusable USB sub-system, as the xhci host controller is constantly resetting itself. I've attached the full output of the dmesg at the end of this email, but the main resetting cycle snippet is: usb_alloc_device: set address 4 failed (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT ugen0.4: <Unknown> at usbus0 (disconnected) uhub_reattach_port: could not allocate new device ugen0.4: <ELAN> at usbus0 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 uhid0: <ELAN Touchscreen, class 0/0, rev 2.00/11.13, addr 4> on usbus0 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 uhub0: at usbus0, port 1, addr 1 (disconnected) ugen0.2: <Logitech> at usbus0 (disconnected) ums0: at uhub0, port 3, addr 1 (disconnected) ugen0.3: <CNFDH20J4530100011M2> at usbus0 (disconnected) ugen0.4: <ELAN> at usbus0 (disconnected) uhid0: at uhub0, port 7, addr 4 (disconnected) xhci0: 32 byte context size. xhci0: Port routing mask set to 0xffffffff uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 uhub0: 13 ports with 13 removable, self powered ugen0.2: <Logitech> at usbus0 ums0: <Logitech USB Mouse, class 0/0, rev 1.10/6.20, addr 1> on usbus0 ums0: error reading report description device_attach: ums0 attach returned 12 ugen0.3: <CNFDH20J4530100011M2> at usbus0 xhci0: Resetting controller Would any developer be keen to help me resolve this issue? I'm willing to try out any patches on this system so that I can get back a working USB sub-system. Cheers. -- Jonathan Chen <jonc at chen.org.nz> ----dmesg-output---- Copyright (c) 1992-2014 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD is a registered trademark of The FreeBSD Foundation. FreeBSD 10.0-STABLE #0 r263710: Tue Mar 25 21:21:41 NZDT 2014 root at daemonblade:/usr/obj/usr/src/sys/DAEMONBLADE amd64 FreeBSD clang version 3.4 (tags/RELEASE_34/final 197956) 20140216 CPU: Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz (1795.88-MHz K8-class CPU) Origin = "GenuineIntel" Id = 0x40651 Family = 0x6 Model = 0x45 Stepping = 1 Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Features2=0x7fdafbbf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,<b11>,FMA,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,MOVBE,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND> AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM> AMD Features2=0x21<LAHF,ABM> Standard Extended Features=0x27ab<GSFSBASE,TSCADJ,BMI1,AVX2,SMEP,BMI2,ENHMOVSB,INVPCID> TSC: P-state invariant, performance statistics real memory = 17179869184 (16384 MB) avail memory = 16464371712 (15701 MB) Event timer "LAPIC" quality 600 ACPI APIC Table: <DELL WN09 > FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 SMT threads cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 cpu2 (AP): APIC ID: 2 cpu3 (AP): APIC ID: 3 ACPI Error: Gpe0Block - 32-bit FADT register is too long (32 bytes, 256 bits) to convert to GAS struct - 255 bits max, truncating (20130823/tbfadt-223) ioapic0 <Version 2.0> irqs 0-39 on motherboard random: <Software, Yarrow> initialized kbd1 at kbdmux0 acpi0: <DELL WN09 > on motherboard acpi0: Power Button (fixed) cpu0: <ACPI CPU> on acpi0 cpu1: <ACPI CPU> on acpi0 cpu2: <ACPI CPU> on acpi0 cpu3: <ACPI CPU> on acpi0 hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0 Timecounter "HPET" frequency 14318180 Hz quality 950 Event timer "HPET" frequency 14318180 Hz quality 550 Event timer "HPET1" frequency 14318180 Hz quality 440 Event timer "HPET2" frequency 14318180 Hz quality 440 Event timer "HPET3" frequency 14318180 Hz quality 440 Event timer "HPET4" frequency 14318180 Hz quality 440 atrtc0: <AT realtime clock> port 0x70-0x77 irq 8 on acpi0 atrtc0: Warning: Couldn't map I/O. Event timer "RTC" frequency 32768 Hz quality 0 attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0 Timecounter "i8254" frequency 1193182 Hz quality 0 Event timer "i8254" frequency 1193182 Hz quality 100 Timecounter "ACPI-fast" frequency 3579545 Hz quality 900 acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1808-0x180b on acpi0 pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0 pci0: <ACPI PCI bus> on pcib0 pcib0: no PRT entry for 0.20.INTA vgapci0: <VGA-compatible display> port 0x5000-0x503f mem 0xe3000000-0xe33fffff,0xc0000000-0xcfffffff irq 16 at device 2.0 on pci0 vgapci0: Boot video device hdac0: <Intel Haswell HDA Controller> mem 0xe3610000-0xe3613fff irq 16 at device 3.0 on pci0 xhci0: <Intel Panther Point USB 3.0 controller> mem 0xe3600000-0xe360ffff irq 11 at device 20.0 on pci0 xhci0: 32 byte context size. xhci0: Port routing mask set to 0xffffffff usbus0 on xhci0 pci0: <simple comms> at device 22.0 (no driver attached) hdac1: <Intel Lynx Point-LP HDA Controller> mem 0xe3614000-0xe3617fff irq 22 at device 27.0 on pci0 pcib1: <ACPI PCI-PCI bridge> irq 16 at device 28.0 on pci0 pci1: <ACPI PCI bus> on pcib1 pcib2: <ACPI PCI-PCI bridge> irq 18 at device 28.2 on pci0 pci2: <ACPI PCI bus> on pcib2 pci2: <network> at device 0.0 (no driver attached) pcib3: <ACPI PCI-PCI bridge> irq 19 at device 28.3 on pci0 pci3: <ACPI PCI bus> on pcib3 pci3: <unknown> at device 0.0 (no driver attached) re0: <RealTek 8168/8111 B/C/CP/D/DP/E/F/G PCIe Gigabit Ethernet> port 0x4000-0x40ff mem 0xe3404000-0xe3404fff,0xe3400000-0xe3403fff irq 19 at device 0.1 on pci3 re0: Using 1 MSI-X message re0: ASPM disabled re0: Chip rev. 0x5c800000 re0: MAC rev. 0x00000000 miibus0: <MII bus> on re0 rgephy0: <RTL8251 1000BASE-T media interface> PHY 1 on miibus0 rgephy0: none, 10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, 100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT-FDX, 1000baseT-FDX-master, 1000baseT-FDX-flow, 1000baseT-FDX-flow-master, auto, auto-flow re0: Ethernet address: e0:db:55:c7:35:02 pcib4: <ACPI PCI-PCI bridge> irq 16 at device 28.4 on pci0 pci4: <ACPI PCI bus> on pcib4 vgapci1: <VGA-compatible display> port 0x3000-0x307f mem 0xe2000000-0xe2ffffff,0xd0000000-0xdfffffff,0xe0000000-0xe1ffffff irq 16 at device 0.0 on pci4 nvidia1: <GeForce GT 750M> on vgapci1 vgapci1: child nvidia1 requested pci_enable_io vgapci1: child nvidia1 requested pci_enable_io ehci0: <EHCI (generic) USB 2.0 controller> mem 0xe361d000-0xe361d3ff irq 23 at device 29.0 on pci0 usbus1: EHCI version 1.0 usbus1 on ehci0 isab0: <PCI-ISA bridge> at device 31.0 on pci0 isa0: <ISA bus> on isab0 ahci0: <Intel Lynx Point-LP AHCI SATA controller> port 0x5088-0x508f,0x5094-0x5097,0x5080-0x5087,0x5090-0x5093,0x5060-0x507f mem 0xe361c000-0xe361c7ff irq 19 at device 31.2 on pci0 ahci0: AHCI v1.30 with 4 6Gbps ports, Port Multiplier not supported ahcich0: <AHCI channel> at channel 0 on ahci0 ahcich1: <AHCI channel> at channel 1 on ahci0 pci0: <serial bus, SMBus> at device 31.3 (no driver attached) acpi_acad0: <AC Adapter> on acpi0 battery0: <ACPI Control Method Battery> on acpi0 acpi_lid0: <Control Method Lid Switch> on acpi0 acpi_button0: <Power Button> on acpi0 acpi_button1: <Sleep Button> on acpi0 acpi_tz0: <Thermal Zone> on acpi0 atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64,0x62,0x66 irq 1 on acpi0 atkbd0: <AT Keyboard> irq 1 on atkbdc0 kbd0 at atkbd0 atkbd0: [GIANT-LOCKED] psm0: <PS/2 Mouse> irq 12 on atkbdc0 psm0: [GIANT-LOCKED] psm0: model Generic PS/2 mouse, device ID 0 sc0: <System console> at flags 0x100 on isa0 sc0: VGA <16 virtual consoles, flags=0x300> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0 ppc0: cannot reserve I/O port range est0: <Enhanced SpeedStep Frequency Control> on cpu0 p4tcc0: <CPU Frequency Thermal Control> on cpu0 est1: <Enhanced SpeedStep Frequency Control> on cpu1 p4tcc1: <CPU Frequency Thermal Control> on cpu1 est2: <Enhanced SpeedStep Frequency Control> on cpu2 p4tcc2: <CPU Frequency Thermal Control> on cpu2 est3: <Enhanced SpeedStep Frequency Control> on cpu3 p4tcc3: <CPU Frequency Thermal Control> on cpu3 ZFS filesystem version: 5 ZFS storage pool version: features support (5000) Timecounters tick every 1.000 msec hdacc0: <Intel Haswell HDA CODEC> at cad 0 on hdac0 hdaa0: <Intel Haswell Audio Function Group> at nid 1 on hdacc0 pcm0: <Intel Haswell (HDMI/DP 8ch)> at nid 3 on hdaa0 hdacc1: <Realtek (0x0283) HDA CODEC> at cad 0 on hdac1 hdaa1: <Realtek (0x0283) Audio Function Group> at nid 1 on hdacc1 pcm1: <Realtek (0x0283) (Analog 2.0+HP/2.0)> at nid 20,33 and 18 on hdaa1 random: unblocking device. usbus0: 5.0Gbps Super Speed USB v3.0 usbus1: 480Mbps High Speed USB v2.0 ugen0.1: <0x8086> at usbus0 uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 ugen1.1: <Intel> at usbus1 uhub1: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus1 ada0 at ahcich0 bus 0 scbus0 target 0 lun 0 ada0: <ST1000LM014-1EJ164 DEM7> ATA-9 SATA 3.x device ada0: Serial Number W381E00Z ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes) ada0: Command Queueing enabled ada0: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C) ada0: Previously was known as ad4 cd0 at ahcich1 bus 0 scbus1 target 0 lun 0 cd0: <PLDS DVD+-RW DU-8A5HH SD12> Removable CD-ROM SCSI-0 device cd0: Serial Number TTYK07363942J51Z9A03 cd0: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO 8192bytes) cd0: Attempt to query device size failed: NOT READY, Medium not present - tray closed Netvsc initializing... SMP: AP CPU #1 Launched! SMP: AP CPU #3 Launched! SMP: AP CPU #2 Launched! Timecounter "TSC" frequency 1795882972 Hz quality 1000 Root mount waiting for: usbus1 usbus0 uhub0: 13 ports with 13 removable, self powered Root mount waiting for: usbus1 usbus0 ugen0.2: <Logitech> at usbus0 uhub1: 3 ports with 3 removable, self powered ugen0.3: <CNFDH20J4530100011M2> at usbus0 ugen1.2: <vendor 0x8087> at usbus1 uhub2: <vendor 0x8087 product 0x8000, class 9/0, rev 2.00/0.04, addr 2> on usbus1 Root mount waiting for: usbus1 usbus0 uhub2: 8 ports with 8 removable, self powered Root mount waiting for: usbus0 xhci0: Resetting controller usb_alloc_device: set address 4 failed (USB_ERR_TIMEOUT, ignored) Root mount waiting for: usbus0 usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT Root mount waiting for: usbus0 usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) Root mount waiting for: usbus0 usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT Root mount waiting for: usbus0 Root mount waiting for: usbus0 usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) Root mount waiting for: usbus0 usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT Root mount waiting for: usbus0 Root mount waiting for: usbus0 usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) Root mount waiting for: usbus0 usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT Root mount waiting for: usbus0 Root mount waiting for: usbus0 usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) Root mount waiting for: usbus0 usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT ugen0.4: <Unknown> at usbus0 (disconnected) uhub_reattach_port: could not allocate new device ugen0.4: <ELAN> at usbus0 hid_get_item: Number of items truncated to 255 uhub0: at usbus0, port 1, addr 1 (disconnected) ugen0.2: <Logitech> at usbus0 (disconnected) Trying to mount root from zfs:deepwater []... ugen0.3: <CNFDH20J4530100011M2> at usbus0 (disconnected) ugen0.4: <ELAN> at usbus0 (disconnected) xhci0: 32 byte context size. xhci0: Port routing mask set to 0xffffffff uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 uhub0: 13 ports with 13 removable, self powered fuse-freebsd: version 0.4.4, FUSE ABI 7.8 ugen0.2: <Logitech> at usbus0 ugen0.3: <CNFDH20J4530100011M2> at usbus0 xhci0: Resetting controller usb_alloc_device: set address 4 failed (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT ugen0.4: <Unknown> at usbus0 (disconnected) uhub_reattach_port: could not allocate new device ugen0.4: <ELAN> at usbus0 hid_get_item: Number of items truncated to 255 uhub0: at usbus0, port 1, addr 1 (disconnected) ugen0.2: <Logitech> at usbus0 (disconnected) ugen0.3: <CNFDH20J4530100011M2> at usbus0 (disconnected) ugen0.4: <ELAN> at usbus0 (disconnected) xhci0: 32 byte context size. xhci0: Port routing mask set to 0xffffffff uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 uhub0: 13 ports with 13 removable, self powered ugen0.2: <Logitech> at usbus0 ums0: <Logitech USB Mouse, class 0/0, rev 1.10/6.20, addr 1> on usbus0 ums0: error reading report description device_attach: ums0 attach returned 12 ugen0.3: <CNFDH20J4530100011M2> at usbus0 xhci0: Resetting controller usb_alloc_device: set address 4 failed (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT ugen0.4: <Unknown> at usbus0 (disconnected) uhub_reattach_port: could not allocate new device ugen0.4: <ELAN> at usbus0 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 uhid0: <ELAN Touchscreen, class 0/0, rev 2.00/11.13, addr 4> on usbus0 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 uhub0: at usbus0, port 1, addr 1 (disconnected) ugen0.2: <Logitech> at usbus0 (disconnected) ugen0.3: <CNFDH20J4530100011M2> at usbus0 (disconnected) ugen0.4: <ELAN> at usbus0 (disconnected) uhid0: at uhub0, port 7, addr 4 (disconnected) xhci0: 32 byte context size. xhci0: Port routing mask set to 0xffffffff uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 uhub0: 13 ports with 13 removable, self powered ugen0.2: <Logitech> at usbus0 ums0: <Logitech USB Mouse, class 0/0, rev 1.10/6.20, addr 1> on usbus0 ums0: error reading report description device_attach: ums0 attach returned 12 ugen0.3: <CNFDH20J4530100011M2> at usbus0 xhci0: Resetting controller usb_alloc_device: set address 4 failed (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT ugen0.4: <Unknown> at usbus0 (disconnected) uhub_reattach_port: could not allocate new device ugen0.4: <ELAN> at usbus0 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 uhid0: <ELAN Touchscreen, class 0/0, rev 2.00/11.13, addr 4> on usbus0 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 uhub0: at usbus0, port 1, addr 1 (disconnected) ugen0.2: <Logitech> at usbus0 (disconnected) ugen0.3: <CNFDH20J4530100011M2> at usbus0 (disconnected) ugen0.4: <ELAN> at usbus0 (disconnected) uhid0: at uhub0, port 7, addr 4 (disconnected) xhci0: 32 byte context size. xhci0: Port routing mask set to 0xffffffff uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 uhub0: 13 ports with 13 removable, self powered ugen0.2: <Logitech> at usbus0 ums0: <Logitech USB Mouse, class 0/0, rev 1.10/6.20, addr 1> on usbus0 ums0: 3 buttons and [XYZ] coordinates ID=0 ugen0.3: <CNFDH20J4530100011M2> at usbus0 xhci0: Resetting controller usb_alloc_device: set address 4 failed (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT usbd_req_re_enumerate: addr=4, set address failed! (USB_ERR_TIMEOUT, ignored) usbd_setup_device_desc: getting device descriptor at addr 4 failed, USB_ERR_TIMEOUT ugen0.4: <Unknown> at usbus0 (disconnected) uhub_reattach_port: could not allocate new device ugen0.4: <ELAN> at usbus0 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 uhid0: <ELAN Touchscreen, class 0/0, rev 2.00/11.13, addr 4> on usbus0 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 hid_get_item: Number of items truncated to 255 uhub0: at usbus0, port 1, addr 1 (disconnected) ugen0.2: <Logitech> at usbus0 (disconnected) ums0: at uhub0, port 3, addr 1 (disconnected) ugen0.3: <CNFDH20J4530100011M2> at usbus0 (disconnected) ugen0.4: <ELAN> at usbus0 (disconnected) uhid0: at uhub0, port 7, addr 4 (disconnected) xhci0: 32 byte context size. xhci0: Port routing mask set to 0xffffffff uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 uhub0: 13 ports with 13 removable, self powered ugen0.2: <Logitech> at usbus0 ums0: <Logitech USB Mouse, class 0/0, rev 1.10/6.20, addr 1> on usbus0 ums0: 3 buttons and [XYZ] coordinates ID=0 ugen0.3: <CNFDH20J4530100011M2> at usbus0 xhci0: Resetting controller [..repeat ad-infinitum ...]