I have put together a DIY External Powered USB Hub by following the instructions. (Instructables, htc-linux)
- USB hub with 4 ports
- 5v 2A AC/DC power supply (It varies when tested with multimeter, 5.3 ~ 5.5)
Unfortunately it doesn't seem to work. Here is the lsusb -v I try plugging Logitech K260 and Netgear N150 - WNA1100 wireless adaptor, nothing was detected when connecting via Hub. I couldn't figure the issue, I tested for the connectivity of of the 4 points (+5 D+ D- GND), seems to be working.
I would like to use my Netgear N150 instead of LAN cable. Though it is detected if connected directly, it doesn't connect. I assume it is due to power requirement, it is the reason why I built this USB hub in first place.
Here is the output from lsusb -v
pi@raspberrypi ~ $ lsusb -v
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 1 Single TT
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0002 2.0 root hub
bcdDevice 3.02
iManufacturer 3
iProduct 2
iSerial 1
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 2 TT per port
bMaxPacketSize0 64
idVendor 0x0424 Standard Microsystems Corp.
idProduct 0x9512
bcdDevice 2.00
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 41
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 1 Single TT
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0001 1x 1 bytes
bInterval 12
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 2 TT per port
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0001 1x 1 bytes
bInterval 12
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 0
bDeviceProtocol 1
bMaxPacketSize0 64
idVendor 0x0424 Standard Microsystems Corp.
idProduct 0xec00
bcdDevice 2.00
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 39
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 255
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 4
Bus 001 Device 004: ID 046d:c52e Logitech, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x046d Logitech, Inc.
idProduct 0xc52e
bcdDevice 23.00
iManufacturer 1
iProduct 2
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 59
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 4
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 98mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 1 Keyboard
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 59
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 8
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 177
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0014 1x 20 bytes
bInterval 2
Here is the output from dmesg
pi@raspberrypi ~ $ dmesg
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 3.2.27+ (dc4@dc4-arm-01) (gcc version 4.7.2 20120731 (prerelease) (crosstool-NG linaro-1.13.1+bzr2458 - Linaro GCC 2012.08) ) #250 PREEMPT Thu Oct 18 19:03:02 BST 2012
[ 0.000000] CPU: ARMv6-compatible processor [410fb767] revision 7 (ARMv7), cr=00c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
[ 0.000000] Machine: BCM2708
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] On node 0 totalpages: 114688
[ 0.000000] free_area_init_node: node 0, pgdat c050db28, node_mem_map c05b6000
[ 0.000000] Normal zone: 896 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 113792 pages, LIFO batch:31
[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[ 0.000000] pcpu-alloc: [0] 0
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 113792
[ 0.000000] Kernel command line: dma.dmachans=0x7f35 bcm2708_fb.fbwidth=1280 bcm2708_fb.fbheight=960 bcm2708.boardrev=0xf bcm2708.serial=0x496c5807 smsc95xx.macaddr=B8:27:EB:6C:58:07 sdhci-bcm2708.emmc_clock_freq=100000000 vc_mem.mem_base=0x1c000000 vc_mem.mem_size=0x20000000 dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Memory: 448MB = 448MB total
[ 0.000000] Memory: 448872k/448872k available, 9880k reserved, 0K highmem
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] vmalloc : 0xdc800000 - 0xe8000000 ( 184 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xdc000000 ( 448 MB)
[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
[ 0.000000] .text : 0xc0008000 - 0xc04c0e78 (4836 kB)
[ 0.000000] .init : 0xc04c1000 - 0xc04e0b10 ( 127 kB)
[ 0.000000] .data : 0xc04e2000 - 0xc050e1c0 ( 177 kB)
[ 0.000000] .bss : 0xc050e1e4 - 0xc05b5128 ( 668 kB)
[ 0.000000] NR_IRQS:330
[ 0.000000] sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 4294967ms
[ 0.000000] timer_set_mode: unhandled mode:1
[ 0.000000] timer_set_mode: unhandled mode:3
[ 0.000000] Console: colour dummy device 80x30
[ 0.000000] console [tty1] enabled
[ 0.000945] Calibrating delay loop... 697.95 BogoMIPS (lpj=3489792)
[ 0.060149] pid_max: default: 32768 minimum: 301
[ 0.060629] Mount-cache hash table entries: 512
[ 0.061122] Initializing cgroup subsys cpuacct
[ 0.061213] Initializing cgroup subsys devices
[ 0.061250] Initializing cgroup subsys freezer
[ 0.061281] Initializing cgroup subsys blkio
[ 0.061425] CPU: Testing write buffer coherency: ok
[ 0.061761] hw perfevents: enabled with v6 PMU driver, 3 counters available
[ 0.062971] devtmpfs: initialized
[ 0.073313] NET: Registered protocol family 16
[ 0.074002] bcm2708.uart_clock = 0
[ 0.075626] hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.
[ 0.075683] hw-breakpoint: maximum watchpoint size is 4 bytes.
[ 0.075722] mailbox: Broadcom VideoCore Mailbox driver
[ 0.075829] bcm2708_vcio: mailbox at f200b880
[ 0.075933] bcm_power: Broadcom power driver
[ 0.075972] bcm_power_open() -> 0
[ 0.075997] bcm_power_request(0, 8)
[ 0.576677] bcm_mailbox_read -> 00000080, 0
[ 0.576717] bcm_power_request -> 0
[ 0.576743] Serial: AMBA PL011 UART driver
[ 0.576897] dev:f1: ttyAMA0 at MMIO 0x20201000 (irq = 83) is a PL011 rev3
[ 0.886920] console [ttyAMA0] enabled
[ 0.912419] bio: create slab <bio-0> at 0
[ 0.917627] SCSI subsystem initialized
[ 0.921628] usbcore: registered new interface driver usbfs
[ 0.927355] usbcore: registered new interface driver hub
[ 0.932938] usbcore: registered new device driver usb
[ 0.938976] Switching to clocksource stc
[ 0.943226] FS-Cache: Loaded
[ 0.946405] CacheFiles: Loaded
[ 0.963138] NET: Registered protocol family 2
[ 0.967972] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.976142] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[ 0.984176] TCP bind hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.991130] TCP: Hash tables configured (established 16384 bind 16384)
[ 0.997741] TCP reno registered
[ 1.000913] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 1.006828] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 1.013642] NET: Registered protocol family 1
[ 1.018775] RPC: Registered named UNIX socket transport module.
[ 1.024911] RPC: Registered udp transport module.
[ 1.029636] RPC: Registered tcp transport module.
[ 1.034388] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 1.041131] bcm2708_dma: DMA manager at dc808000
[ 1.045933] bcm2708_gpio: bcm2708_gpio_probe c04e9c18
[ 1.051390] vc-mem: phys_addr:0x00000000 mem_base=0x1c000000 mem_size:0x20000000(512 MiB)
[ 1.060684] audit: initializing netlink socket (disabled)
[ 1.066233] type=2000 audit(0.750:1): initialized
[ 1.182313] VFS: Disk quotas dquot_6.5.2
[ 1.186558] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 1.194098] FS-Cache: Netfs 'nfs' registered for caching
[ 1.200356] msgmni has been set to 876
[ 1.206206] io scheduler noop registered
[ 1.210176] io scheduler deadline registered (default)
[ 1.215622] io scheduler cfq registered
[ 1.253626] Console: switching to colour frame buffer device 160x60
[ 1.276826] kgdb: Registered I/O driver kgdboc.
[ 1.291227] brd: module loaded
[ 1.299534] loop: module loaded
[ 1.303649] vcos: [1]: vchiq_init_state: slot_zero = 0xffd80000, is_master = 0
[ 1.311258] vcos: [1]: vchiq_init_state: called
[ 1.316775] vcos: [1]: vchiq: initialised - version 2 (min 2), device 252.0
[ 1.324714] usbcore: registered new interface driver smsc95xx
[ 1.330678] cdc_ncm: 04-Aug-2011
[ 1.334174] usbcore: registered new interface driver cdc_ncm
[ 1.339984] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[ 1.551051] Core Release: 2.80a
[ 1.554415] Setting default values for core params
[ 1.559368] Finished setting default values for core params
[ 1.770233] Using Buffer DMA mode
[ 1.773684] Periodic Transfer Interrupt Enhancement - disabled
[ 1.779652] Multiprocessor Interrupt Enhancement - disabled
[ 1.785389] OTG VER PARAM: 0, OTG VER FLAG: 0
[ 1.789865] Dedicated Tx FIFOs mode
[ 1.793695] dwc_otg: Microframe scheduler enabled
[ 1.793741] dwc_otg bcm2708_usb: DWC OTG Controller
[ 1.798806] dwc_otg bcm2708_usb: new USB bus registered, assigned bus number 1
[ 1.806317] dwc_otg bcm2708_usb: irq 32, io mem 0x00000000
[ 1.812011] Init: Port Power? op_state=1
[ 1.816155] Init: Power Port (0)
[ 1.819597] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.826619] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.839977] usb usb1: Product: DWC OTG Controller
[ 1.850797] usb usb1: Manufacturer: Linux 3.2.27+ dwc_otg_hcd
[ 1.862669] usb usb1: SerialNumber: bcm2708_usb
[ 1.874163] hub 1-0:1.0: USB hub found
[ 1.884033] hub 1-0:1.0: 1 port detected
[ 1.894615] dwc_otg: FIQ enabled
[ 1.894634] dwc_otg: NAK holdoff enabled
[ 1.894656] Module dwc_common_port init
[ 1.895005] usbcore: registered new interface driver uas
[ 1.906304] Initializing USB Mass Storage driver...
[ 1.917357] usbcore: registered new interface driver usb-storage
[ 1.929290] USB Mass Storage support registered.
[ 1.940073] usbcore: registered new interface driver libusual
[ 1.952138] mousedev: PS/2 mouse device common for all mice
[ 1.964493] bcm2835-cpufreq: min=700000 max=700000 cur=700000
[ 1.970330] bcm2835-cpufreq: switching to governor powersave
[ 1.981898] bcm2835-cpufreq: switching to governor powersave
[ 1.993668] cpuidle: using governor ladder
[ 2.009496] cpuidle: using governor menu
[ 2.019482] sdhci: Secure Digital Host Controller Interface driver
[ 2.031519] sdhci: Copyright(c) Pierre Ossman
[ 2.041803] sdhci: Enable low-latency mode
[ 2.051708] bcm_power_open() -> 1
[ 2.060999] Registered led device: mmc0::
[ 2.062477] mmc0: SDHCI controller on BCM2708_Arasan [platform] using platform's DMA
[ 2.076278] mmc0: BCM2708 SDHC host at 0x20300000 DMA 2 IRQ 77
[ 2.088087] sdhci-pltfm: SDHCI platform and OF driver helper
[ 2.100874] Indeed it is in host mode hprt0 = 00021501
[ 2.112101] Registered led device: led0
[ 2.112513] usbcore: registered new interface driver usbhid
[ 2.129908] usbhid: USB HID core driver
[ 2.163341] TCP cubic registered
[ 2.183367] Initializing XFRM netlink socket
[ 2.213143] NET: Registered protocol family 17
[ 2.224882] Registering the dns_resolver key type
[ 2.240738] mmc0: problem reading SD Status register.
[ 2.263077] VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5
[ 2.277775] registered taskstats version 1
[ 2.288096] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[ 2.301035] Waiting for root device /dev/mmcblk0p2...
[ 2.316319] mmc0: new high speed SDHC card at address aaaa
[ 2.328407] mmcblk0: mmc0:aaaa SU08G 7.40 GiB
[ 2.340732] mmcblk0: p1 p2
[ 2.373050] usb 1-1: new high-speed USB device number 2 using dwc_otg
[ 2.385612] Indeed it is in host mode hprt0 = 00001101
[ 2.443333] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 2.473045] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 2.502353] devtmpfs: mounted
[ 2.512196] Freeing init memory: 124K
[ 2.633517] usb 1-1: New USB device found, idVendor=0424, idProduct=9512
[ 2.647168] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2.663933] hub 1-1:1.0: USB hub found
[ 2.673875] hub 1-1:1.0: 3 ports detected
[ 2.963334] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[ 3.093692] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[ 3.093717] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 3.122375] smsc95xx v1.0.4
[ 3.188619] smsc95xx 1-1.1:1.0: eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:6c:58:07
[ 3.303344] usb 1-1.3: new full-speed USB device number 4 using dwc_otg
[ 3.446425] usb 1-1.3: New USB device found, idVendor=046d, idProduct=c52e
[ 3.464100] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3.477922] usb 1-1.3: Product: USB Receiver
[ 3.488731] usb 1-1.3: Manufacturer: Logitech
[ 3.512246] input: Logitech USB Receiver as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3:1.0/input/input0
[ 3.552705] generic-usb 0003:046D:C52E.0001: input: USB HID v1.11 Keyboard [Logitech USB Receiver] on usb-bcm2708_usb-1.3/input0
[ 3.602865] input: Logitech USB Receiver as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3:1.1/input/input1
[ 3.634049] generic-usb 0003:046D:C52E.0002: input,hiddev0: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-bcm2708_usb-1.3/input1
[ 4.145709] udevd[137]: starting version 175
[ 10.612250] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 11.130347] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 11.916388] bcm2835 ALSA card created!
[ 11.940583] bcm2835 ALSA chip created!
[ 11.957208] bcm2835 ALSA chip created!
[ 11.970944] bcm2835 ALSA chip created!
[ 11.984700] bcm2835 ALSA chip created!
[ 12.003362] bcm2835 ALSA chip created!
[ 12.023442] bcm2835 ALSA chip created!
[ 12.042056] bcm2835 ALSA chip created!
[ 16.612997] mmc0: missed completion of cmd 18 DMA (512/512 [1]/[1]) - ignoring it
[ 16.627416] mmc0: DMA IRQ 6 ignored - results were reset
[ 20.633741] smsc95xx 1-1.1:1.0: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
[ 23.976991] Adding 102396k swap on /var/swap. Priority:-1 extents:1 across:102396k SS
[ 340.933405] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 343.493475] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 346.053492] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 348.453463] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 350.923518] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 353.483453] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 356.043399] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 358.603458] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 361.163388] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 363.723483] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 366.283406] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 368.843473] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 371.403416] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 373.963476] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 376.523418] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 379.083486] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 381.643547] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 384.203489] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 386.603410] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 389.073464] hub 1-1:1.0: connect-debounce failed, port 2 disabled
..
..
..
..
[ 1562.719882] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 1565.280058] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 1567.840249] hub 1-1:1.0: connect-debounce failed, port 2 disabled
[ 1570.400439] hub 1-1:1.0: connect-debounce failed, port 2 disabled
dmesg?hub 1-1:1.0: connect-debounce failed, port 2 disabled: This almost certainly represents a power issue.