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

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4
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64 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
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0answers
2k 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 ...
3
votes
0answers
38 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
votes
0answers
868 views

Media changed: please insert the disk labeled 'Debian GNU/Linux

I installed Debian 7 using a USB flash drive "burned" from the first DVD ISO of the Debian installation CD/DVD. I did a very minimal install without Debian desktop environment, Print server and ...
3
votes
0answers
291 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. ...
3
votes
0answers
465 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
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0answers
291 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
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0answers
789 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
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0answers
2k views

Getting my Smart Card reader to work on Linux

I got a Smart Card reader, that I ripped from a Laptop the other day. It is an internal Smart Card reader, though it uses USB, so making a cable for it, was no problem. It seems it's recognized by ...
3
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0answers
281 views

PS/2 to USB port for keyboard gives “unable to enumerate USB device on port 5”

I got my hands on a Logitech Ultra X (Y-SX49) keyboard, with US key marks. The US key placement is much better than my Swedish native, at least for programmers, because there are much fewer shortcuts ...
3
votes
0answers
1k 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 ...
2
votes
0answers
20 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: ...
2
votes
0answers
27 views

Unable to load a USB keyboard driver on Debian machine

I have a pretty simple driver for USB keyboard: #include <linux/module.h> #include <linux/kernel.h> #include <linux/usb.h> #include <linux/usb/input.h> #include ...
2
votes
0answers
43 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
17 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.
2
votes
0answers
62 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
77 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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0answers
120 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 ...
2
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0answers
274 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
107 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
52 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
48 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
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0answers
148 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 ...
2
votes
0answers
403 views

Debian Wheezy USB2 ehci_hcd

I have a friend who decided to switch to Linux from Windows. I was helping her to get up and running as quickly as possible but we ran into a problem which I can't seem to solve. She uses Debian ...
2
votes
0answers
46 views

Configuring Enlightened Sound Daemon

I have a single audio source specified in ALSA as plughw:1,0 (a USB microphone) and I'd like several other processes to be able to access the source simultaneously. For various reasons, each process ...
2
votes
0answers
278 views

lsusb outputs “Illegal Instruction” - why?

I'm trying to get a 3G USB dongle to work on a Raspberry Pi running Raspbian Wheezy, using a script called sakis3g. However, in trying to do this, I keep running into problems: when trying to connect ...
2
votes
0answers
906 views

How to retrieve sysfs devpath of a USB flash drive given its corresponding partition sysfs path?

I have a USB flash drive connected to a hub. Its storage device partition devpath in sysfs is /devices/pci0000:00/0000:00:12.2/usb6/6-1/6-1.2/6-1.2:1.0/host10/target10:0:0/10:0:0:0/block/sdb/sdb1. I ...
2
votes
0answers
148 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
211 views

Making USB drives readonly on an specific USB port or for an user account

I have a Multiseat machine and the second seat has USB access from a signle port by HUB (a Keyboard and a mouse are connected to it). I need make all storages drives that is connected to to this HUB ...
2
votes
0answers
994 views

Unable to use USB through DD-WRT on a Buffalo WZR-HP-G300NH2

I have a Buffalo WZR-HP-G300NH2 and I'm trying to get USB support working. The original Buffalo-branded firmware would refuse to mount the USB drive, so I've followed what tutorials I've found for ...
2
votes
0answers
772 views

USB keyboard won't work with usbhid driver

I have an HP thin client (model t5325) which runs Debian Linux (kernel 2.6.22.18-1-armel). We are testing some kiosk keyboards from Operator Interface Technology which are presenting themselves to ...
2
votes
0answers
1k views

Restart USB (ehci) in Fedora 14

I am looking for a way in Fedora 14 to restart the USB system so that all USB devices disconnect and reconnect to the OS (due to some slightly dubious USB peripherals that I have no choice but to ...
1
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0answers
8 views

Configuring Epson Stylus NX420 Scanner on Debian Wheezy

I'm trying to get my Epson Stylus NX420 printer/scanner combo to work with sane on Debian Wheezy (via USB). I've got cups and saned running, and I've added the printer in the cups configuration page. ...
1
vote
0answers
18 views

How can I find out if a problem with the USB ports in my laptop is due to hardware or software?

A few days ago, the USB ports in my laptop stop working. At first, I thought it might be due to a recent update of my OS (Ubuntu 14.04), so I began testing if something came up when connecting a ...
1
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0answers
14 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 ...
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0answers
20 views

What accommodations must be made to boot an external HDD on multiple computers?

Is there a way to create a bootable external hard drive (like a persistent USB) that can be booted to multiple computers? I have built plenty of live USBs where this wasn't a problem, but when I ...
1
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0answers
10 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 ...
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0answers
29 views

Gobi 2000 not detected on Lenovo X201

I recently bought a used Lenovo X201 wich includes a Gobi 2000 3G modem, but I can't get it working for the simple reason: the USB device does not appear to show up in the kernel. uname -r output: ...
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0answers
22 views

Failing to load a module on udev event

I have a pretty simple udev rule which is executed when a USB is plugged into my Debian machine: SUBSYSTEMS=="usb", KERNEL=="sd?", ACTION=="add", RUN+="/usr/local/bin/USB/t.sh \ %k" My t.sh is also ...
1
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0answers
47 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 ...
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0answers
39 views

USB fails to be mounted or detected on Debian machine

My lsusb command says this: Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 002 Device 005: ID 0951:1642 Kingston Technology DT101 G2 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 ...
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0answers
222 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. ...
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0answers
87 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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0answers
32 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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0answers
26 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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0answers
82 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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0answers
89 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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0answers
96 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 ...
1
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0answers
102 views

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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0answers
27 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 ...