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

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9 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. ...
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2answers
164 views

Send a specific signal to an external USB keyboard? Or, how do I fix fdopen()?

Some background: I'm trying to make the caps lock light on an external keyboard light up on-command when I run a command from the command line. Ideally it would be scriptable, so that I can use it for ...
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0answers
8 views

CDC ACM doesn't working in a custom linux kernel

I've a cubieboard2 running arch linux with a custom linux kernel. In the cubieboard2 I plugged in my usb-serial device (like an arduino), the device is recognized as CDC ACM. My linux kernel has the ...
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1answer
38 views

Downgrade USB 3.0 to USB 2.0 in ubuntu

I have USB 2.0 device when I plugged this device into the USB 3.0 port of my system then system gets hanged, after researching many of the solutions says that you can downgrade USB 3.0 to USB 2.0. But ...
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0answers
40 views

USB 2.0 device is not working in USB 3.0 ports

I have a Ubuntu 12.04 system. To that system I have one USB 3.0 port. In this port I am trying use my USB 2.0 device. But every time when I plugged that USB 2.0 device into that USB 3.0 port,system ...
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0answers
13 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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4answers
78 views

Unwanted console text

For some reason, every time I plug in a USB device, a whole bunch of messages get dumped onto the terminal. (Saying something about device IDs, buffering modes, etc.) How to I prevent this from ...
5
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1answer
67 views

Writing raw images safely to USB sticks

Trying lots of different linux, on all kinds of hardware I find my self typing commands like this quite often: sudo dd if=xubuntu-13.10-desktop-amd64.iso of=/dev/sdc bs=10240 Needless to say, ...
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1answer
36 views

USB modalias. Meaning of numeric values

For the USB modaliases, I know that the values corresponding to the device's vendor and product ids can be found here: http://www.linux-usb.org/usb.ids Which online resources and/or kernel source ...
0
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1answer
22 views

Targus USB number pad not working in Debian Wheezy

I am running a fresh install of Wheezy x86 and trying to connect a Targus number pad (model AKP10US) which has the USB Vendor/Model IDs of 05A4 / 9840. (FWIW the system is also running in VirtualBox) ...
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1answer
30 views

Is there a reason that Apple's USB vendor ID on Linux is a close anagram of Broadcom's? [closed]

I was poking around in lsusb and I noticed that Apple's USB vendor ID, 05ac, is a very close anagram of Broadcom's, 0a5c. Is there a historical/political/other reason for this, or is it just a ...
2
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1answer
35 views

Fresh install Windows 7 from USB on machine with Ubuntu and Windows 7

I have a Toshiba laptop l755 S5282 with Windows 7 and Ubuntu 12.04 on it. About a year ago, I pulled an iso file off of DigitalRivers for Windows 7. I did a fresh install of Windows 7 from USB, then ...
2
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1answer
49 views

Is it possible to simulate/force/fake an USB device unplug and replug on Linux?

So I've got a strange problem that I've been running onto. I've got a bitcoin usb miner, Bitfury, and I'm using CGMiner to mine. When I start the application, as root, the USB device is not detected ...
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0answers
34 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 ...
2
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1answer
23 views

Alsa not detecting USB microphone on system boot

I have a USB microphone that works fine, up until I reboot my system. After that, it doesn't work at all until I unplug it and replug it. Based on my (limited) understanding of the components ...
2
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0answers
26 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 ...
3
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1answer
70 views

USB keypad (HID) not responding in linux but in grub

An external USB keypad I'd like to use gets recognised as a USB HID device, but it is not functional when Linux is booted. It does work when plugged into a Windows desktop and it does work while in ...
5
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1answer
99 views

Why does “cat ttyUSB0” not produce output?

I connected an infrared receiver to a USB port ... (the last line of dmesg tells device file) $ dmesg [10496.596063] usb 7-2: new full-speed USB device number 2 using uhci_hcd [10496.751112] usb 7-2: ...
0
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1answer
132 views

usb kernel module does not load on demand but works fine with insmod and modprobe from the shell

I have a USB Linux Kernel module that compiles and builds. Running insmod loads my module and dmseg and tail -f /var/log/debug shows me it works as expected. Running depmod -a then modprobe from the ...
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0answers
10 views

How to use linux/usb/serial.h to probe and disconnect? [migrated]

I would like to write an usb driver that sits on top of usbserial module. I have something like this: static struct usb_driver tiny_driver = { .name = "tiny", .probe = ...
1
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1answer
39 views

Make a computer act as a virtual USB device for other equipments

Some applications simulate a virtual USB or CD Rom drive as if a USB drive is attached to the computer. Is there any configuration or application that provides a virtual USB drive, not for the the ...
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2answers
43 views

CUPS libusbx-devel is needed error when trying to build cups-1.7.1 from source

I have been trying to build CUPS 1.7.1 on RHEL 5.6 using $ sudo rpmbuild -ta ./cups-1.7.1-source.tar.bz2 and was getting: error: Failed build dependencies: libusbx-devel is needed by ...
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1answer
154 views

Linux Mint 16: Android Device not listed with lsusb

I've installed Linux Mint 16 on my new PC and found out that my plugged in Huawei U8850 Android 2.3.5 device is not listed with the lsusb command: phone plugged in: $ lsusb Bus 002 Device 002: ID ...
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0answers
37 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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2answers
23 views

Snapshot of drive

Does technology exist which allows you to take an instantanious snapshot of a drive? At the moment, I am using dd which takes a few minutes to create an image of a usb drive to my hdd. Is it ...
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2answers
56 views

Automatically backup usb drive to computer

I am trying to create a personal sync system for my project. I don't want to use something like dropbox, bittorrent sync, owncloud etc for various reasons. At the moment, I have my computers setup ...
0
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0answers
38 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 ...
0
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0answers
26 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 ...
1
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1answer
61 views

Problem with Angstrom USB driver

I am connecting a Huawei E3131B USB 3G modem to my Beaglebone Black running Angstrom. When I connect it directly, the USB acts funny. Sometimes it picks up the modem, sometimes it dissapears from ...
0
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0answers
55 views

rs232 to usb not working

I also asked this question on AskUbuntu but there nobody comments on it I have a konig rs232 serial to usb adapter (no FTDI chip), but when I try to connect to a cisco switch/router (via Putty, ...
2
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1answer
86 views

Map physical USB device path to the Bus/Device number returned by lsusb

I need to get the title of the attached USB device. I can do that with lsusb. udev allows some substitutions when I write rules: say, we can use $kernel to get name of the device, or $devpath to get ...
0
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1answer
70 views

Can't install Crunchbang

I wanted to install Crunchbang 11 x64 from my USB (8GB, fat32), but when the installer starts, it aborts because the installer doesn't find a Crunchbang CD in my drive. I tried it via the dd command ...
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1answer
21 views

Access USB device of another machine as if it was locally plugged?

I would like to use, on server A, an USB webcam that is physically plugged on server B. Is there a way to mount the /dev/video0 of server B on server A (as /dev/video0, or /dev/video1, etc.). Both ...
2
votes
1answer
99 views

USB keyboard doesn't work with Debian installer

I have a wired USB keyboard. I've written the latest netinstall Wheezy image on my USB pendrive (using dd). It boots but the installer doesn't recognize the keyboard! (The same pendrive works on my ...
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0answers
14 views

USB bEndpointAddress varies when run on different targets

I am running a target application that implements the usb gadget driver FunctionFS and has 4 endpoints. I write the descriptors to the endpoint ep0 and the other 4 endpoints are opened for read/write ...
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0answers
22 views

How to have X server on another graphics card which keeps refreshing when I'm working on my main display?

For presentations I want to use the external USB connected video adapter connected to the projector (especially as the standard VGA output in my laptop got damaged). My idea was to start a dedicated ...
2
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0answers
32 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 ...
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0answers
45 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 ...
1
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1answer
54 views

How to create a bootable Linux installation USB from an ISO in OS X?

I downloaded the ISO for Debian's net installation to a computer running OS X. I want to put the data from the ISO onto a USB, so that I can install Debian on another laptop (not an Apple laptop). ...
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0answers
64 views

Fedora unable to detect USB or wireless networks? [closed]

I installed Fedora(Gnome) 19 on a Dell Inspiron with Intel i3 processor, and a factory built-in Windows 7 home premium OS. The installation process completed successfully. But now when I log into ...
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0answers
26 views

Slackware 14 can't find DVD after booting from it

I am installing Slackware 14 from a DVD onto a gigabyte 990fxa-ud3 motherboard. The DVD boots fine but when I run setup and choose CDROM as the source, it says that it can't find the CDROM drive. ...
0
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0answers
102 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 ...
0
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0answers
45 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 ...
5
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2answers
423 views

Which USB slot is 2.0 or 3.0? How do I know?

I would like to know if my desktop computer supports USB 3.0, but from the output below this seems unlikely. I get the following output from lspci: root@liv-HP-Compaq-dc7900:/home/liv# lspci -v | ...
0
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1answer
71 views

Crunchbang installation on netbook

I've recently installed crunchbang on my Compaq mini netbook, as the computer was not very powerful I chose crunchbang and was hoping to be able to use the computer mainly as a VPN server I could log ...
2
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0answers
23 views

What is needed for USB a device to appear under Sound in Ubuntu control panel?

I have a device that combines two audio interfaces and one HID interface. It enumerates correctly, as lsusb -D shows. Also, a trace with wireshark shows no errors - all descriptors are exchanged ...
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0answers
33 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 ...
0
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3answers
83 views

How to set up wireshark with correct permissions [duplicate]

Ubuntu 13.10, Saucy Salamander here. I am trying to install wireshark in order to monitor USB activity with a certain device. The problem is that wireshark does not have access to the USB bus (or any ...
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0answers
157 views

Mount exFAT file system as user without hardcoding

I've "solved" the following problem, but not in a desirable way. First, mounting exFAT file systems in Linux was truly as simple as this site says. The catch is, "as long as you are root." A user ...
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57 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, ...