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

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How do I dual-boot Kali Linux With ISO (no CD/USB/DVD)

I am trying to install Kali Linux 1.0.7 to my Windows 8.1 32-bit PC. I have the ISO, but I have no CD's, USB Sticks, or DVD in my home so I was wondering how can I install Kali Linux without ...
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27 views

Emulating scroll lock behaviour to trigger USB KVM switch

At work, I use two computers: one Windows machine for intranet and mail, one Ubuntu machine on a separate network for development. In order to easily switch between the two I use a simple USB KVM ...
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15 views

How to turn off a USB drive when samba is not using it [Raspberry PI]

I have a backup server on a Raspberry Pi using samba with 2x 2TB drives for storage. To reduce noise and drive degradation I'd like to turn them off when I'm not transferring files. I tried to ...
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51 views

command to determine ports of a device (like /dev/ttyUSB0)

I have a question regarding the ports in Linux. If I connect my device via USB and want to check its port I cant do it using the command lsusb, which only specifies bus number and device number on ...
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In ubuntu, I cannot send two-byte commands over a usb serial port from within a C program [migrated]

I wish to write in C or C++ a program to control a Sony camera connected over a USB serial device (Applied Logic USB to LANC [0600]) running on my Virtual Box guest OS, Ubuntu 12.04. Through putty, I ...
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15 views

Rfkill refuses to unblock the WiFi device

Running rfkill list indicates the USB WiFi adapter is softblocked. I can run rfkill unblock 0 with no error message, yet running rfkill list again indicates the device is still softblocked. ...
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1answer
30 views

How can I administer a server if USB disabled?

I'm looking to disable USB via the kernel for a high-performance server. How can I effectively administer the server, if problems occurs if USB isn't enabled? Without USB, keyboards and mice ...
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22 views

How do I know from a BeagleBone Black if it is connected via USB (as a client/slave)?

BeagleBone Black has an USB port which allows the user to access it through ssh. In general, we could say that when you plug it to a PC, the PC is the USB host and the BBB is the USB client. On the ...
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Reduce cache size of flash storage devices

For various benefits Linux uses a memory cache for writes to removable stogare devices like memory sticks. This cache seems to be quite large on my system, which leads to some annoying behavior. For ...
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1answer
25 views

Device URI for Printer

I have the system printer GUI installed on Centos 6.6. I added the printer (HP LaserJet Pro P1102). The model exists. The problem is that the GUI is asking for the Device URI which I'm not sure where ...
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27 views

Brother scanner and missing /dev/bus/usb entry?

I'm having awful trouble getting a DCP-7055 multi-function printer to work as a scanner with Mint 16. (My old flatbed scanner was working.) (I have printing working.) I've installed the Brother ...
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1answer
22 views

How to suspend an USB device?

I want to suspend a connected USB device at my pc manually. I tried the following instructions in Debian (Kernel 3.2.0). uname output: Linux debian7-dev-gnome 3.2.0-4-686-pae #1 SMP Debian ...
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36 views

How to use a PS gamepad with OpenWRT?

I'm fairly new to OpenWRT and Linux in general so please bare with me. I'm trying to print the button presses from a playstation gamepad to the console on an Arduino Yun which has OpenWRT. I've used ...
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41 views

How to activate reverse tethering on CentOS 5

Most examples for reverse tethering are for Ubuntu. They go something along these lines: Attach smartphone Configure usb0 Start reverse tethering on the smartphone Use the PC network via USB from ...
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36 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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Input/output error using jmtpfs not saving file when copying to device

I'm trying to mount an Android device on Debian using: jmtpfs /media/mobile But when I try to copy a file from my system to the device I get an input/output error saying that the file can't be ...
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35 views

Some USB devices not powered at boot

Recently some of the USB devices connected to my up-to-date Arch Linux desktop machine are not powered at boot: The mouse (connected via the keyboard) and a Wi-Fi dongle (connected to the front panel) ...
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59 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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19 views

Trying to load file to device via serial to USB adapter

So I have this device, and it's pretty old. It only has a serial interface. I have a cord that connects to it, and then to the serial port of a computer. This cord is plugged into a serial to usb ...
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1answer
47 views

How to dump USB traffic?

I got an USB gamepad and I would like to see and inspect the signals and commands that this peripherals is actually sending to my PC/kernel: how I can do that ? I was assuming that something like ...
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0answers
31 views

automatic disconnection of RAID array

A RAID array connected to my system (Debian 7) via USB frequently disconnects itself for no apparent reason. Upon initial connection to the system, the device is detected, and the array can be ...
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27 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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1answer
93 views

How to read/write to tty* device?

I have a device that sends information over USB to my computer. Arch Linux sets up this device by creating a file named ttyUSB0 in /dev/. I have been using GTKterm to receive this incoming information ...
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1answer
52 views

shell script for mounting external device to mount point

I want to make a script to mount an external device to a particular mount point e.g say /mnt. Let me elaborate my question, suppose I run fdisk -l in terminal I would get this output Disk identifier: ...
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1answer
189 views

No usb 3 Arch linux 3.15.1

Up until my last reboot, I had the ability to use my usb 3 port. I just got the system installed not that long ago, so up until then I'd been configuring and installing drivers, but that was the ...
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1answer
73 views

Could not boot from an external hard drive [duplicate]

I burned a live session of Linux Mint 17 Cinnamon to a USB stick. Then I installed LM17C into an external hard drive by using this USB stick. I managed to do it and even successfully started on my ...
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1answer
111 views

USB passthrough for LXC containers

PROBLEM: So I've been trying to get a usb device (primesense - the OEM reference for the Kinect) to passthrough to an LXC container so I can develop without worrying about polluting my stable system ...
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Invalid version string 'GNU/Linux'" when creating bootable USB stick

When I tried to create a bootable USB stick using Startup Disk Creator, appear this massege below. Invalid version string 'GNU/Linux'" How can I create a bootable USB stick on Ubuntu 14.04?
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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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37 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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0answers
46 views

How to get device filename from lsusb output or by device path

Related question: USB connect/disconnect notification When the device is plugged/unplugged, I get instant notification, that's great. But to make it (almost) perfect, I also want to get device ...
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1answer
59 views

How can I add an external CD/DVD writer ?

I want to add an external CD/DVD writer to my Ubuntu 14.04 system (System 76 Ratel): the writers in my local electronics store have USB interfaces, and the drives are advertised as windows and mac ...
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1answer
33 views

Automounting with udev takes too much time

Specifically, using udev to automount usb memory sticks takes about 3-4 seconds according to its own logs. It may not sound like that much, but it is on an embedded distribution for a system that ...
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1answer
34 views

How do I allow non-root access to Nexus 7 2013 LTE (deb) over adb and fastboot?

I need to access my Nexus 7 2013 LTE (deb) over adb and fastboot, but it seems that it's required to be root to be able to run the adb server to be able to access the device due to USB rules. How can ...
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2answers
55 views

Finding an USB device path

Recently I saw this command posted on the internet: ls -l /dev/disk/by-label/ It worked, but I'm concerned, does it work on other Linux distros? How can I find USB device on the computer where USB ...
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2answers
135 views

How to automatically mount an USB device on plugin-time on an already running system?

I know how to use /etc/fstab to automatically mount devices on boot or when doing sudo mount -a, which works perfectly fine. For example, here is my current line for my device UUID=B864-497A ...
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1answer
61 views

Why isn't sda1 showing up in dev and how can I fix that?

I have an embedded Linux device and I was trying to copy some files to it. I plugged in a USB stick, the dmesg shows that it was recognized, but for some reason /dev/sda1 never showed up. I'm trying ...
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1answer
46 views

Use a Linux directory as a USB-OTG device to an Android phone?

I have a really strange idea and I was wondering if I could do it. Many Android custom recoveries allow placing backups in both the internal storage, the external (ie: microSD) storage, and ...
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1answer
115 views

USB device messages flooding dmesg (and console)

When USB mouse is plugged into my laptop, dmesg is flooded with following messages: usb 3-1: USB disconnect, device number 28 usb 3-1: new low-speed USB device number 29 using xhci_hcd usb 3-1: New ...
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1answer
143 views

USB to Virtual Machine XenServer 6.2

I've been fighting with this for a while and still nothing. So here is the deal, I have a XenServer 6.2 machine with many VM. I'm trying to attach the USB Port to the Virtual Machine, to use it with ...
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1answer
146 views

Qemu 2.0 Windows guest - mouse stops working (vnc) when using usb-passthrough

I have installed Qemu 2.0 on an Ubuntu Server 14.04 LTS computer. I use Qemu to run multiple virtual machines. One of them is using Windows 8.1 Pro (x64) and is used for back-ups. The guest runs fine ...
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1answer
46 views

Installing linux to run off USB

I have copied a Gnome distro to a USB drive which boots fine on my Mac, I want to install this to another USB drive I have so I can take the USB drive and use it on any PC. I partitioned the USB drive ...
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51 views

usbip: problem getting device attributes: No such file or directory

I try to use an ftdi rs232/usb adapter over ethernet. It's connected to my raspberry pi. pi@raspberrypi ~ $ usbip list -l Local USB devices ================= - busid 1-1 (0424:9512) 1-1:1.0 ...
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1answer
43 views

Creating/Removing a symbolic link when a USB device connects/disconnects

I'm working with an Arduino board and Matlab under Linux. Matlab, unfortunately, doesn't recognize the Arduino board when is connected unless I create a symbolic link to the Arduino board in /dev by: ...
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Why does USB errors with my mobile phone stop the computer from interacting with services?

I set my Android phone to use "Mass storage" as the connection mode (In Settings → Storage → context menu item USB computer connection) to easily be able to browse the files. Then I plugged ...
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2answers
66 views

Giving more priority to a USB device

I have a keyboard with USB cable connected to computer through a USB 2.0 socket. But when I type fast, Ubuntu ignores some key messages (e.g. I may type CORRECT but what is typed may be CORET) . After ...
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118 views

How can I enable access to USB devices within VirtualBox guests?

I cannot see any USB devices within my VirtualBox guest VMs from my host. How do I enable access for my guest VMs? ...
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1answer
66 views

PPP over USB from RJ11

I have an adapter which on 1 side offers an RJ11 male plug, and on the other side and USB Type A female port, I also have another adapter which is similar but it offers and USB Type A male plug. I ...
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Removed USB storage device is still mounted

I'm working on a embedded linux system based on busybox. Sometimes a USB device which is physically removed from the post is still displayed in mount, df or /proc/mounts. If I reattach the device, it ...
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Modifier keys cannot be mapped to regular keys on USB keyboard with udev

Using an hwdb file, /etc/udev/hwdb.d/99-keyboard.hwdb, I can remap the left Alt key on my USB keyboard as the Ctrl key: keyboard:usb:v*p* KEYBOARD_KEY_700e2=leftctrl This also works when I try to ...