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

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Installing specific usb serial modules in fedora 21

I am trying to use a usb to dual rs232 cable (USB Compound Device due to the number of RS232 connectors) on my fedora 21 system to install another linux os (Gentoo) on a Cobalt RaQ 4i server blade, ...
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34 views

Redirect or trigger on dev node input event

Is it possible to trigger an event when data is available at a dev node? Very simply, if some widget device sends information over usb to my linux box, would it be possible to trap into some event ...
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how do I mount an external hard drive connected via SATA Wire to CentOS 7

I have CentOS 7 installed as a guest OS inside VirtualBox running on a Windows 8.1 machine. There is a SATA Wire connecting the machine to an external hard drive that used to contain a dual boot ...
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43 views

What does the 2-1.1.1:1.0 string mean in the usb device path?

I have the following path to consider: /sys/bus/usb/devices/2-1.1.1:1.0/ But when I look at lsusb output, I can see something like this: # lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, ...
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1answer
224 views

VirtualBox guest cannot connect to USB drive, why not?

I have VirtualBox installed in Windows 8.1 and I am using it to launch and use CentOS 7 within VirtualBox. When I connect a USB drive to the computer, and right click over the icon circled in the ...
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29 views

Cannot find directory & Cannot cd errors during usb mount openwrt

What I am trying to do: I have a TP-Link Router running OpenWRT. I have files on my router in the OpenWRT OS that I want to save to a flash drive. Steps to complete the task: 1. I navigated to the ...
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1answer
50 views

Problems with wireless usb mouse on slackware

I have a logitech m570 mouse that I cannot get to work on slackware64 14.1. My problems began with me being unable to use "X-configure" because of an error with the amount of screens, to create a ...
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91 views

How is raw mouse movement converted to /dev/input/mice content?

Raw mouse movement is generating some data and sent via USB. It is then getting processed somewhere and written into /dev/input/mice & supplied to GUI, etc. How is this happening? If I want to ...
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32 views

How to find the configuration differences between two identical usb audio dongle devices?

I have two units of the same headset model that use a wireless USB dongle (Logitech H800). Each headset only pairs with its own dongle, but I want to get the same dongle to work with both headsets. ...
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1answer
52 views

Confused about USB3 connection

My PC motherboard is a Gigabyte Z68A-d3-b3. It is supposed to have two USB3 ports and, indeed, there are two ports on the back panel that are specifically labeled USB3 and have blue connector inserts. ...
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254 views

USB WiFi on CentOS7

I've got a clean installation of CentOS 7 on a desktop PC and a USB WiFI Adapter (RTL8191SU 802.11n). Connecting through USB leads shows "USB Ethernet: connecting" in Gnome3's network status bar. ...
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102 views

ttyUSB0 serial port crashes and locks, requires computer reset

I posted this question on stack overflow already but after looking up similar questions I realized this is a much better place for it (and it only got 8 views after 10 hours on a Sunday). If necessary ...
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73 views

Live USB with Kali not booting

I created a live USB according to this instructioins http://docs.kali.org/downloading/kali-linux-live-usb-install. I run the dd command on a Ubuntu 15.04 machine to create the live USB. The operatioon ...
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55 views

Ethernet USB dongle works then randomly drops until restart

I've been using xubuntu 14.04 as my daily driver for a while now, as I've been getting into web development. I'm using a dell ultrabook that has no ethernet port (XPS 12 9Q33), and so I have usb 2.0 ...
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20 views

Can I create universal recovery usb by separating partition?

I installed super grub2 disk and partitioned my usb as Model: SanDisk Cruzer Blade (scsi) Disk /dev/sdc: 16.0GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End ...
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51 views

How to boot from USB on Debian?

So I did a minimal install of debian jessie (without X) and now I am trying to boot linux mint USB install which I made with Unetbootin. It doesn't boot the install and pressing F12 only gives me BIOS ...
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71 views

How to power cycle a USB device on Beagleboneblack?

When I reboot my Beaglebone-black the USB modem does not start up. I need to unplug the modem, reboot the bbb and plug it for it to work. How do I fix this? I suspect that I need to power cycle USB 1 ...
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58 views

How can I check or fix broken hardware links? “mount: no such device”

I have a SunBlade1000 running SunOS5.8 and I have a usb cradle from StarTech.com attached to it with a 1TB and a 2TB HDD from Seagate. The 1TB mounted just fine and is currently being written to. The ...
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72 views

How to read lsusb?

What is the vendor id and what is the product id in the output of lsusb? ➜ lsusb Bus 001 Device 018: ID 0781:5576 SanDisk Corp. Bus 001 Device 011: ID 0e0f:000b VMware, Inc. Bus 001 Device 001: ID ...
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1answer
163 views

Usb Stick as hdd to install kali linux and use it on a macbook

I have a macbook and i would like to normally install kali linux on a usb stick (as a second partition), but i have some question: 1) Can i use a usb stick like this? ...
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30 views

How do I copy my usb Opensuse Live OS to another external USB Drive

I have a bootable 8gb USB stick which has latest version of OpenSUSE live OS. But this USB stick is very very slow. It's really annoying. I want to copy my operating system to another USB external ...
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42 views

Windows XP virtual machine crashes installing driver for host-mapped Velleman K8090 USB relay card

I have an existing Windows XP (Win32) virtual machine running under Qemu 1.5.0 on Linux Mint 16. I wanted to test Velleman 8 channel USB relay card. There is a generic driver available, which I ...
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18 views

Manually set USB data pin value?

I'm making a USB device that will only have an active/inactive state. Not having to interpret serial data will reduce the size/cost/complexity of the device significantly. Is there any reasonable way ...
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38 views

Openbox Session mount webcam/other usb devices?

I am following http://thepcspy.com/read/converting-ubuntu-desktop-to-kiosk/ guide to turn my Ubuntu into a Kiosk, and everything works fine except when my Google Chrome boots it doesn't have any of my ...
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35 views

Cant see harddrive folder in ftp client

I've mounted my hard drive to my Raspberry Pi using a tutorial. I mounted the drive in /media/movies. The problem is that when I connect my Raspberry Pi to an FTP client, I can only see the "home" and ...
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212 views

External hard drive not recognized on USB 2.0 port

I bought a Seagate FreeAgent GoFlex Desk (2 TB) external drive two years ago and used the drive with Ubuntu and Windows (dual boot workstation). I made a backup of the drive last week using another ...
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1answer
91 views

How to prevent UDEV rules assigning a device to a specific set of names

I have some UDEV rules for a RAID array; 10 hard disks are assigned names from /dev/sda to /dev/sdj. The disks can be absent at any time. How do I write a UDEV rule to prevent a device such as an ...
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1answer
91 views

USB not working : USB Ports Hijacked/Reserved Permanently by VirtualBox

This scary incident happened today morning. I started a virtual machine inside my Linux Mint host and shared my USB Wireless device with the machine. The virtual machine's image resided in an ...
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126 views

One single /dev/ttyACM for multiple composite devices (USB-Serial) connected to a hub

When I connect multiple composite devices to a USB hub, and then connect the hub to my laptop(running Fedora 21), I can see only one /dev/ttyACM* file. When I connect these devices directly into ...
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72 views

What can cause a usb port speed change?

I have an instrument connected via usb to a OpenSuse (11.1 32) computer. Following the vendor instructions, I've added one rule to udev: ATTR{idVendor}=="0e0d", ATTR{idProduct}=="0003", MODE="0666" ...
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70 views

USB controller does not work correctly under Fedora 21

I've recently installed Fedora 21 on my workplace machine but i'm having a hard time getting one of the USB 2 controllers to work correctly. The problem is that any devices plugged in (i have tried ...
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1answer
175 views

4TB USB drive consistence totally freezes Xubuntu 15.04

I've always found USB very flaky. I've experienced lots of random freezes (needing hard resets) when for instance I accidentally unplug a drive before unmounting. Drives would only sometimes ...
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1answer
230 views

USB flash drive is read-only under Gnome on Debian

I have Debian on my PC. I insert a USB flash and it open just fine in my Gnome environment. But when I try to copy something in it I get: Error during copy.The destination is only for reading. When ...
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49 views

Linux Driver for USB “reverse” mass storage device

I'm developing a USB device that I want to read and write in virtual filesystems that are in my computer. Basically the device needs to be able to read, write and get the virtual filesystem size. Some ...
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1answer
409 views

how to create multiboot usb w/ persistence for multiple OS

I'm installing multiple operating systems on a usb drive I recently purchased for this purpose and was wondering how to create a usb drive with multiple persistent OS's that will be linux based and ...
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1answer
102 views

How to associate physical usb port with usb device number

I'm using Ubuntu 12.04. I need to send a command to a device that I have connected on a port of my PC. I can send the command by finding out what the Bus and Device number are. For example, lsusb ...
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72 views

WIFI over SDIO over USB - Do I have to reflect that in the device tree?

I am currently extending an embedded hardware platform which runs a linux kernel 3.16. I want to connect an external SDIO controller to the USB bus, and then run a WIFI module using that SDIO ...
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1answer
108 views

Redirecting USB scanner to windows machine

We have a Linux thin client that connects to the Windows terminal server via RDP. We need to redirect USB scanner that plugged to the Linux machine to the Windows terminal server. What is most ...
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1answer
67 views

Low mouse and keyboard framerate in Fedora 21

I have recently added a Fedora 21 partition on my workplace machine, however i'm experiencing the curious issue that my mouse and keyboard "framerates" are incredibly slow. The mouse cursor is ...
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45 views

Simple automount USB devices with fstab: is it normal behaviour?

I notice that adding this in /etc/fstab: /dev/sdb1 /media vfat nofail 0 0 will automount any SD card of my USB SD reader, and even auto-remount if I remove the card, and insert a new ...
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2answers
218 views

reading /dev/ttyUSB0

I'm trying to see the output of an accelerometer with Ubuntu (15.04), kernel 3.19. The UART driver is cp210x.ko, and the chip of the accelerometer is MPU6050w. So, when I plug the device, I have this: ...
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23 views

USB drives un-mounts and remounts to different mount point

I use PLEX and Sickrage to manage and play video content. My video content is on a USB drive, which is mounted to /media/series. For whatever reason, at some stage the USB drive would be un-mounted ...
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103 views

USB MIDI keyboard (Oxygen 61) now not appearing in QJackCtl

I've had a USB Oxygen61 MIDI keyboard for awhile now, and it has worked fine in the past (maybe a month ago, last I tried). But now when I plug it in, it no longer shows up in aconnect -l, and I ...
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1answer
78 views

How to detect if USB device is bootable in udev?

I'm trying to write a udev rule to not mount USB devices plugged into my system if they're bootable, but I don't know how to specify in udev if a device is bootable in a rule. Is that possible? If so, ...
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2answers
543 views

Creating a bootable OpenBSD Flashdrive

I've attempted to do dd if=install57.iso of=/dev/sdb. sdb is my flash drive. I've also tried with the install57.fs. When I try to boot from USB it says "Missing Operating System" Could anyone help? ...
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128 views

USB to UART converter is lagging

I have a USB to UART converter with CH341A chip on it. This device can be used as a USB to UART converter, as a 24/25 chip programmer and as a USB to PARALLEL converter. The problem is with the UART ...
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1answer
67 views

How do I understand if an USB Ethernet adapter is compatible with a certain kernel version to use it to load kernel/filesystem?

I'm using an old kernel, 2.6.32, and I would like to boot the kernel over TFTP and mount the filesystem over NFS. Mounting the kernel over TFTP is a plus, but mounting the filesystem over NFS is a ...
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0answers
198 views

USB bar code scanner not working on Raspbian

My USB bar code scanner (SYMBOL LS2208) is recognized as a HID. hid-generic 0003:05E0:0600.000F: hiddev0,hidraw0: USB HID v1.10 Device [\xffffffef\xffffffbe\xffffffa9\xffffffbe\xffffffa9Symbol ...
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3answers
246 views

My SD card has a partition but Linux doesn't create a device entry for the partition

OK, I don't know what's going on here, at first I thought it was a problem I remember having some time ago where I couldn't mount a vfat partition because it had some flag set that it had not been ...
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249 views

usbfs: process 25093 (pool) did not claim interface 0 before use

I recently got a new phone, a Moto G 2nd Gen. I am running Debian Jessie on kernel 3.16.0-4-amd64 libmtp 1.1.8-1 libusb-1.0-0 2:0.1.12-1 gvfs 1.22.2-1 When I plug it in, it appears to be fine. ...