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

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5
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733 views

Connection problem with usb3 external storage on linux (UAS driver problem)

On Ubuntu 15.10, when i want to format into NTFS file format an external 4TO disk connected by USB3 (on a Starteck USB/ESata HDD dock), i have a lot of I/O Error, and format fail... I try GParted v ...
4
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0answers
74 views

disable a usb port in linux

I've searched a lot for an answer to this, but the closest I can get to finding a solution is this: http://ask.metafilter.com/219676/How-can-I-tell-linux-to-ignore-one-USB-port but it doesn't work for ...
4
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0answers
218 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" ...
4
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0answers
507 views

USB Mouse Freezing in Debian / KDE // Keyboard OK

Having problems with seemingly random freezes of my Logitech Wireless Mouse in Debian (KDE). With regards to a number of articles out there, I don't have powertop, mouseemu or laptop-mode-tools ...
4
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0answers
97 views

Trouble getting USB printer to 'stick' using udevadm

What I’ve got so far $ udevadm info -a -p$(udevadm info --q path -n /dev/usb/lp1) | grep serial ATTRS{serial}=="544336460792090000" /etc/udev/rules.d/50-udev.rules: SUBSYSTEM=="usb", ATTRS{serial}=...
4
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0answers
223 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 ...
4
votes
0answers
712 views

linux udev rule to load gadget module for client driver

I'm having a hard time automating loading a gadget module and bringing up the usb0 device as a eth interface. The interface in question is g_ether for a embedded Linux device and connecting to a PC. ...
4
votes
0answers
3k views

How do I find out the device node corresponding to my device in SuSE 8?

I'm forced to work with a bunch of point-of-sale systems running SuSE 8. They are my client's computers. We are stuck dealing with these old systems until they get to upgrade their whole fleet to SLE ...
4
votes
0answers
2k views

Make laptop to wake up by keyboard and mouse

The only way I can wake up my laptop (HP Elitebook 8460p) from suspend is by pressing the power button. Neither the built-in keyboard/mouse nor the external ones (connected via USB) wake the laptop up....
3
votes
0answers
267 views

Multiple (combine) USB sound cards with Alsa + Jack + Pure Data

I'm a musician and I'm new to PI/Raspbian/Linux. I'm using a Raspberry PI 2 with Pure Data (PD) for a multichannel audio installation. I have one 5.1 USB soundcard (6 channels) but for my installation ...
3
votes
0answers
557 views

How to make MTP work

I'm experiencing many problems trying to properly connect and access the memory of my phone from my Linux system. I'm running openSUSE 13.1, with KDE, and my phone is a Samsung Galaxy S3 Neo equipped ...
3
votes
0answers
205 views

Inaccessible USB Mass Storage Device (Bricked Garmin device)

I've got a running GPS watch (Garmin Forerunner 210, fwiw) which recently got bricked during a firmware update. Let's assume for point of discussion that an rma is not possible, so I'd really like to ...
3
votes
0answers
110 views

Bad/strange USB device issue: failed to shutdown/restart

On a fresh Arch Linux installation with Intel i7 processor and an Nvidia graphics card, I noticed during boot log messages related to a usb device filled the screen before it reached the graphical ...
3
votes
0answers
187 views

Disable USB drive from sleeping

I am loading fedora20 directly from a SATA drive connected via USB. The problem is that I will be working and all of a sudden the drive seems to have been put to sleep and nothing will work except ...
3
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0answers
71 views

How to identify process accesing usb port (scale)?

I'd like to identify through terminal which processes are using the scale connected to my mac, I need to kill those processes or clean the port to be used only by my app. Thanks a lot in advance.
3
votes
0answers
958 views

WiFi USB stick not recognised by BeagleBone Black

I'm trying to set up a TP-LINK TL-WL725N v2 WiFi USB stick on my BeagleBone Black. However, it doesn't even appear to be recognised, i.e. it doesn't show up in the output of lsusb: $ lsusb Bus 001 ...
3
votes
0answers
795 views

USB mouse not working

Every time I plug in any wired mouse recently, I get similar to the below on VCS1: [1443270.286164] usb 6-1: new low-speed USB device number 15 using uhci_hcd [1443270.454270] usb 6-1: New USB ...
3
votes
0answers
1k views

How do I reset a USB device using a script?

I have a USB GSM modem that does not always work property (Huawei E367u-2) Sometimes it gets reset (USB device disconnect/reconnect in logs) and when it comes back up, it has different ttyUSB numbers. ...
3
votes
0answers
161 views

Netbook w/ Fedora 17 and USB Numpad at Boot Disables Internal Keyboard

I have a netbook with F17 installed. No X, just text console. The system boots fine and the internal keyboard works. I can plugin a USB numpad after boot and it functions reliably. However, if the ...
2
votes
0answers
30 views

Decrease USB Detection Time in Linux?

I'm creating a Linux based test rig for a USB device (not storage). Basically i've set it up using udev rules to automatically open a terminal and run a test script as soon as the USB device is ...
2
votes
0answers
144 views

Having a computer act as a virtual USB slave device rather than as a host

I'm only moderately proficient with USB protocols and linux in general, so please bear with me. I have a use case where I want a virtual hard disk (particularly, on a freeNAS installation) to act as ...
2
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0answers
72 views

How can I make udev accept mass storage and reject everything else?

I'm trying to write a udev rule to allow USB mass storage devices but reject anything else (keyboard, mouse, etc). I found this online: ACTION!="add", GOTO="deauthorize_end" SUBSYSTEM!="usb", GOTO="...
2
votes
0answers
275 views

Magnetic stripe reader on Debian

I have recently aquired a USB magnetic stripe card reader. When used on Windows, I swipe a card, it acts as a keyboard and types out whatever is on the magstripe. However when used on Linux (Ubuntu ...
2
votes
0answers
227 views

How to make iwconfig fully work on embedded Linux

The target embedded Linux is ARM Xilinx Zynq, and I am working in CentOS to compile to ARM using Xilinx's tool. The target OS is working now and I want to setup the wifi using iwconfig. I downloaded ...
2
votes
0answers
460 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 ...
2
votes
0answers
507 views

Can I connect to Multiple Bluetooth devices using a Bluetooth dongle?

I am using a usb bluetooth adapter on my PI 2 , which communicates to an arduino using HC-06 Bluetooth module. This script runs to connect to that module: #! /usr/bin/python import serial from ...
2
votes
0answers
346 views

Mount android device 4.0.4 on linux

I am trying to mount a Samsung Galaxy S2 as a mass storage device onto an uptodate Arch Linux setup. On the Android phone I have done the following Settings -> More -> USB Utilities -> USB mass ...
2
votes
0answers
271 views

Raspbian: USB storage device name changing after USB device power cycle

I'm running Raspbian 7.4 on a Raspberry PI that has two USB storage devices connected to it. This Raspberry PI will remain running during a power failure because it has console cable connected to it ...
2
votes
0answers
1k views

usbfs did not claim interface before use

Using Sunnybeamtool to read out sunnybeam over Rasperry Pi USB port. I get lot of errors in dmesg which doesn't affect the working (apparently) program is written in C. Messages: [30563.867756] usb ...
2
votes
0answers
268 views

Properly power down SSD during shutdown

I recently got a Samsung SSD. I have debian wheezy installed on it. I carry it around in a USB enclosure and boot both my work and home computers from it. How can I ensure that the system properly ...
2
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0answers
327 views

ERROR: No room on ep ring

I built a pc around a Debian amd64 today. Every time I log in, I see hundreds of lines (that increase as the session proceeds) of ERROR: No room on ep ring. I've seen another question of this type ...
2
votes
0answers
161 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 ...
2
votes
0answers
262 views

USB ethernet device not working in VM

I'm having trouble getting a USB ethernet device working in a qemu-kvm/libvirt VM. The problem is that even though the guest OS sees the USB device just fine it can't mount it. lsusb on the guest ...
2
votes
0answers
97 views

Dedicate USB hardware to LXC container

Reading the LXC documentation, it seems possible to dedicate the physical network port eth2 to an LXC container with config something like: lxc.network.type = phys lxc.network.link = eth2 I'm ...
2
votes
0answers
432 views

How do you determine the capabilities of a WebCam?

I have a collection of WebCam's lying around. Some of them are new, some go back a decade (gotta love not having to "upgrade" devices in Linux :). Somehow I've developed the impression that ...
2
votes
0answers
168 views

How do I debug printers with USB problems via CUPS?

I have two printers that have stopped accepting jobs via their USB subsystem. CUPS sees the printer USB ports, has been able to send jobs to them in the past, but can't talk to them: cas@odysseus:to-...
2
votes
0answers
1k views

Udev rule not working on Debian

I can detect and mount my USB drive on my Debian VM machine. And the first post here - explained below - works on my Ubuntu machine. Should not it work on Debian too? It doesn't of course. Why is that?...
2
votes
0answers
1k views

Sending SMS trough a modem attached to another server using ser2net and socat

I don't know exactly how to troubleshoot the issue I'm having, so I'll ask here. I have a USB 3G modem attached to a physical machine (server4) (running ProxMox (Debian Wheezy)), and I can send SMS ...
2
votes
0answers
271 views

Configure a usb wireless adapter when hotplugged

I have a pc connected to the internet on eth0 and I have a usb wifi dongle: I succeeded to configure it as a hotspot to which I can connect from my mobile devices so that I can share the pc internet ...
2
votes
0answers
2k views

USB Ports not working with Ubuntu Linux 14

Sorry if this seems like a duplicate post but I am Ubuntu Linux noob and am struggling with it a bit. I installed and configured Ubuntu Linux 14 for dual boot setup on my Windows 8.1 machine. ...
2
votes
0answers
287 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 ...
2
votes
0answers
218 views

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 ...
2
votes
0answers
369 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 ...
2
votes
0answers
437 views

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 ...
2
votes
0answers
701 views

How can I set repeat rate of USB keyboard with udev?

How can I get my keyboard repeat rate to apply to a hotplugged USB keyboard? I made a udev rule to set the keyboard repeat delay and rate, /etc/udev/rules.d/99-usb-keyboard.rules with the following ...
2
votes
0answers
403 views

RNDIS Server to make a computer as a peripheral

First of all my goal is this, have a computer as a peripheral device to connect it to anyone's computer with ssh protocol or web. The idea is doing this by using a plug and play USB cable . Facts ...
2
votes
0answers
86 views

Detach keyboard from the kernel

I am writing a remote controller app for an octocopter and want to use a keyboard as an input device for this app but I don't want it to have any effect outside this app. Somehow I would like to make ...
2
votes
0answers
63 views

Driver not showing in /sys/bus tree

I'm trying to bind the "rt3572sta" to a USB device that previously had the "rt2800usb" driver bound to it. I ran this: $ sudo sh -c "echo [device-bus-id] > /sys/bus/usb/drivers/rt2800usb/unbind" ...
2
votes
0answers
474 views

Kicking a process from a USB-Serial port

I have a application which is using the USB-serial port. Occasionally on shutdown the port cannot be opened by another instance of the program, and up until now the only way I know of the program ...
2
votes
0answers
402 views

lsusb partially fails, is the problem with the USB bus or with the command?

What does Couldn't get configuration descriptor 0, some information will be missing mean? Did the Host fail to get the descriptor from the device, or the command lsusb failed to fetch that ...