Universal Serial Bus (USB) establishes a connection between devices and a host computer.

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21 views

Can't access multiple USB channels

In OpenBSD I have a 3G minipcie (USB) modem, that has multiple non multiplexed USB channels. dmesg output: umsm0 at uhub4 port 1 configuration 1 interface 0 "Sierra Wireless, Incorporated AirCard" ...
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27 views

tar causes USB disconnects & reconnects

I'm experiencing a very weird behavior on a device running Linux 2.6.24.6. The device has an SD-Card and USB-ports. If I plug a USB Stick/HDD into a USB port and run the following: tar -cf test.tar ...
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11 views

Connecting MiFi via USB and usb_modeswitch

A bit of background: I have a E586 MiFi. (You can insert a SIM card and connect to it either via wireless or via USB.) My SIM card is a German Vodafone Ultracard, i.e. it is assigned to the same ...
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13 views

usb drive not working on c710-2487

I am trying to figure out why my c710-2487 chromebook won't recognize the USB stick with Ctrlu. I'm trying to boot bodhi from the USB. I have followed all of the instructions but it still seems like ...
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55 views

Installing Kali Alongside Windows 8.1 Error

I tried to install Kali but it would not boot, however Ubuntu booted successfully, it's just Kali that won't boot. I make it to the menu where I select what I wish to do like "Live, Install etc" but ...
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83 views

FTDI USB Serial Driver Buffer Sizes for Optimizing XBee Radio Throughput

I am attempting to optimize Digi XBee Series 2 Radio throughput. I have 2 XBee radios connected to my Ubuntu machine through USB ports with 2 USB->Serial FTDI cables that show up as /dev/ttyUSB0 and ...
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26 views

USB HID works well in Bios and Grub, but doesnt work in Linux

I have a combined USB device with a touchscreen and a keypad. When I plug it into my Linux Laptop the keypad and the touchscreen get both recognized at boot level, I can see both status LEDs turn on ...
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66 views

Debian install no CD-Rom found on Thinkpad X220

im currenty having the problem that the Debian installer wont detect my USB I have a Thinkpad X220 UEFI BIOS version somewhere around 2011 I will explain what I did here: I installed Windows 7 I ...
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32 views

Trying to understand the wacom tablet plugging in usb causes kernel panic

First, I realise that askubuntu exists, but a kernel panic is probably more GNU/Linux (kernel and low-level system programs) than distro specific. So I already have a solution to mitigate the kernel ...
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101 views

Jabra BIZ 2400 USB HeadSet doesn't output sound

I'm trying to get my Jabra BIZ 2400 USB HeadSet working on my Debian Jessie install, but I get nothing from the headphones. I've installed Audacity to test things and it will record audio, but then ...
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49 views

Setting up ZTE E137 modem in Opensuse 13.2

how can i set up a ZTE E137 modem in my opensuse 13.2 installed in my workstation/pc. i have used a usb stick to install modem manager into opensuse 13.2 but logs for modem-manager read it cannot ...
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24 views

bootable usb creator without default bootloader

I want a program (a linux command is more preferable) to create a bootable usb drive but all the programs which I have seen have a default bootloader which they install but I want the bootloader in ...
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34 views

nm-applet (the little computer) does not show up in my system tray after a fresh install of Debian Jessie Beta 2

I just installed Jessie Beta 2 using the amd64 DVD images, rather than netinst images, and fresh out of the box, nm-applet doesn't show up in the system tray. The little computer right next to the ...
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61 views

[SOLVED]Problem printing on USB Printer Canon iR1022A

I have connected a Canon iR1022A printer via USB to my Xubuntu 12.04.the OS tries to install it but i doesnt find the driver.I find the driver manually on the system Canon iR1018-1020-1022 but i ...
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356 views

device descriptor read/64, error -71

I have problem with USB ports on MSI WIND laptop. I have FC17 installed and usb printer sometimes not responds. If I replug a printer in USB port - it's working. Tried to change usb cable and printer ...
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24 views

Want to setup a dropbox sync drive

Is there way to setup a small computer, or raspberry pi, etc. to hold a hard drive, sync it with dropbox and allow access (even if just read only) to the drive through USB to another device/computer? ...
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95 views

Why isn't this “external” harddrive showing up?

I have an "External harddrive to USB adapter" that's giving me trouble. It shows up if I run lsusb (unrelated devices ignored): Bus 002 Device 013: ID 152d:2338 JMicron Technology Corp. / JMicron USA ...
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44 views

How to modify rights automatically when I plug a usb device ?

I am running CentOS 6.6. I need to get specific rights (666) on /dev/bus/usb/... when I plug a specifc usb board (Digilent FPGA board). Otherwise my software complains about LIBSUB_ERROR_ACCESS. It ...
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5 views

scanjet 3670 does not work with usb 3

My SCAN-JET 3670 does not work with USB 3 properly. It works intermittently. Sometimes works after reboot once or twice and then stops. Sometimes I get a blurred or stretched image.
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71 views

How to measure power consumption of a USB device?

The title says it. It has been asked how much power a port can deliver, but I do not need that. I need to get the power consumption of a plugged-in device in real time. This question was left ...
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98 views

TP-Link TL-WN822N USB wifi stopped working after kernel upgrade

I downloaded and compiled the last kernel from git (3.18). Installed it and all the modules. But now the USB wi-fi adapter doesn't work. The kernel can see it: #lsusb -v Bus 001 Device 003: ID ...
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8 views

OpenSuse 11.1 Keyboard Issuses

Im having some repeat issues with my keyboard being unresponsive. Im using opensuse 11.1 with a 2.26.27* kernal and it seems to be getting worst. When the keyboard dies (although the mouse works) , ...
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226 views

libfreenect2 - libusb -99 error

I need some help, when I am running protonect, the IR blaster go on but no frame is captured. It's some sort of libusb error. Running on Mavericks, with an express card adapter with "Nec µPD720202" ...
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18 views

Recovering windows boot files to pendrive

Here's my problem, i recently installed linux mint on my laptop so now i don't have to use it on my gaming pc. However when burn windows image on pendrive and try to boot it i only get a grub recovery ...
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184 views

Unable to install CentOS 7

I have been trying to install CentOS 7 on a computer with no success so far. I am able to boot the live USB media, but the problem is the CentOS installation referring the HDD always as /dev/sdb. No ...
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40 views

unitek nec upd720200 not detected

I've decided to buy an USB3.0 controller on PCI for my debian machine. I did a short research and it appeared that NEC chips will be fine. I've bought Unitek NEC UPD720200 and I does not work: I ...
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30 views

So, apparently i toasted this USB Thumbdrive, but is there still hope?

I'm having trouble with a USB thumbdrive which isn't recognizable under OSX Disk Utility. Device is not popping up, nor any partitions. Needless to say this is occuring on all USB ports and even on a ...
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240 views

unable to format usb drive

I'm trying to read an usb drive that until a few day ago seemed to be perfectly working. Today windows started to be unable to access or modify its content. Trying to reformat it with linux (arch ...
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42 views

Getting output from vivopay-serial converter

First off, I am new to linux so please excuse my ignorance. I'm trying to read output from idtech's ViVOpay Vend III in linux. The device claims it interfaces with USB and RS-232. I currently have ...
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395 views

Wireless 3g dongle not mode-switching successfully

Lots of wireless 3G dongles have 2 modes they can operate in; storage mode where they mount like a USB thumb drive and which usually contains Windows drivers for the device, and communication mode. ...
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99 views

Not receiving any data from ACM device

I am unable to receive any data from a CDC-ACM device on my embedded Linux device. My Linux embedded device is running kernel 2.6.16.11 and has a armv5tejl processor. When plugged in, I see the ...
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283 views

HSPA+ USB Modem Alcatel X600 1bbb:0195

The Modem Does anyone have this modem in Linux? I do not get to configure the device. I have tried other tutorials similar devices without success. I can't get the device /dev/ttyUSB0 My System: ...
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2k views

minicom showing offline

I am trying to use minicom in Ubuntu. To do this I first connect my USB to DB9 converter, then I type this command on terminal dmesg | grep tty to check if my USB to DB9 converter is connected ...
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641 views

USB error -110 (power exceeded) but works when reconnecting

At the last boot, two USB devices were not powered: The Logitech G5 mouse works most of the time, but this time I had to plug it in (in the same motherboard USB port) three or four times before it ...
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192 views

USB HDD Enclosure works with Ubuntu, but not Raspbian

SOLVED: Even though the enclosure came with its own power supply, it required a powered USB hub, probably for some internal components that don't draw power from the main supply. I have this dual HDD ...
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57 views

OTG musb and full speed bulk endpoint throughput

We are developing an application on an OMAP3 device (DM3730 ti). An acquisition board gets samples and sends them to the OMAP board via USB. This acquisition board does a 16KHz sampling which ...
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83 views

Raid 1 or just mirror SATA and USB Harddisk

I think about getting a Cubieboard, and to set up a Linux with OwnCloud. The board has a SATA and two USB Ports. I would like to store the main data on the SATA-HD and use a USB-HD as backup. How ...
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141 views

USB Ports stopped working

After I locked my screen with CtrlAltL (KDE keyboard shortcut that locks the screen) and went away for 5 minutes all the USB devices stopped working (mouse, keyboard & headset). The devices are ...
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7 views

XJacker and PulseAudio connection

Is it possible to connect the XJacker Sound Amplifier (v2) to PulseAudio on Ubuntu? Or is it just XBOX only.
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74 views

How to install and configure USB to serial hub (8 serial ports)?

I have bought a USB to serial hub (8 serial ports) but I don't know how I can install it on my Debian server. On the box, they wrote 'Linux compatible'. What do I need to do to can use it?
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63 views

usb / virtual com port - is it dead?

I have video gimbal that I am attempting to setup. The device, a Basecam 3 Axis unit, has a micro USB port interface. When I plug a USB cable from my Debian laptop to the gimbal and run "lsusb" I ...
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1k views

Why does my USB device not get recognized by Ubuntu?

I seem to have a problem that no else appears to have encountered before (at least a couple of hours Googling has shown this to be the case). I am running Ubuntu 12.04. I plug in the device (Linksys ...
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111 views

Stuck/hung upon connect usb device

I have a device the is coming up 'busy' as soon as I plug it in. I even sniffed the usb connection and all looks normal. How do I find out what is capturing the device? How do I free it up? ...
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278 views

How do I emulate a USB stick with an external CDROM drive?

I am working with a Linux-based high-security network appliance (hereon: device) and do not have access to the user space so I can't log in. The only thing I can do is send it commands to upgrade ...
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265 views

Connecting multiple USB RNDIS devices to PC in the same network

Running an Ubuntu 12.04.4 I have the following issue: I want to connect multiple USB RNDIS devices to one PC. Additionaly, every device should be in the same network. The problem is that only one ...
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157 views

Ubuntu - USB device not discovered after system restart

I have an USB device that after pluging in is visible as /dev/ttyACM0. Unfortunately, after system restart, it is not beeing discovered and I have to plug it out and in again to work. I have found a ...
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735 views

Connect Huawei E3131B 3g Modem

I am attempting to connect a Huawei E3131B 3g modem using Linux. I use usb-modeswitch and pppd. First I mode-switch the modem using the command: usb_modeswitch -c /etc/usb_modeswitch.d/12d1:14fe -v ...
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152 views

Card Reader UB6520 on Parabola GNU/Linux

I'm trying to make work the SD card reader UB6250 on Parabola GNU/Linux. Could you help me please? After inserting the SD card, I get the following dmesg: [65408.273667] usb 2-5: new high-speed USB ...
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124 views

How do i block USB devices based on device class in Linux

Problem Statement In windows server to provide access to USB devices are managed by GFI EndpointSecurity. Is there any open source tool in Linux which can do the same job. I want to block USB ...
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427 views

External disk doesn’t appear in /dev/

I have an external (USB-2.0) hard drive. Today I couldn’t mount it after plugging to my computer. When I look in /dev/ $ ls /dev/sd* There is no new disk, only sda and sdb with their partitions, ...