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

learn more… | top users | synonyms

3
votes
1answer
373 views

`power/persist` file not found in USB device sysfs directory

The file /usr/share/doc/linux-doc/usb/persist.txt.gz mentions that the USB-persist capability can be enabled for a given USB device by writing 1 to the file persist in that device's directory in ...
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
864 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
1answer
228 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 ...
3
votes
3answers
1k 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 ...
3
votes
1answer
527 views

Kernel recognizes USB device but then I can't find it in /sys or /dev

When I connect my Samsung 390G (a cheap cell phone!) to Ubuntu 13.04, dmesg seems to indicate that the storage device thereon is recognizable: [Sun Dec 29 01:26:10 2013] scsi16 : usb-storage ...
3
votes
0answers
462 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
1answer
1k views

Modules for USB wireless adapter missing?

I have an USB wireless adapter that is recognized as: # lsusb ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless Adapter. I am using this adapter on a device that has a much slimmed down kernel ...
3
votes
2answers
828 views

USB memory stick failing to mount - Not Authorized

One of my customers uses a machine running CentOS 6.4 with Gnome 2.28.2. Whenever he plugs a USB memory stick or external hard drive into the machine he gets an error pop-up that simply states Unable ...
3
votes
1answer
278 views

Turn system on by USB keyboard?

To hibernate my Debian Wheezy system, I run the following command: sudo sh -c 'echo disk > /sys/power/state' To wake up the system, I can press any key on my USB keyboard. My understanding of ...
3
votes
0answers
290 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
787 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
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
votes
1answer
282 views

Removing device from USB hub triggers udev event for removing hub

I have a udev rule to halt the system when a usb hub is removed: SUBSYSTEM=="usb", ACTION=="remove", ENV{ID_VENDOR_ID}="050d", ENV{ID_MODEL_ID}="0237", RUN+="/sbin/halt" Unfortunately, this also ...
3
votes
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
2answers
412 views

Mounting USB camera on Ubuntu

I am quite new at Linux and I have to install this SwissRanger camera on Ubuntu. I am trying to follow their USB mounting instructions and I got stuck. From the instructions: Modify the usbdevfs ...
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 ...
3
votes
1answer
211 views

How do I access a flash drive that has been ejected without physically plugging it out and back in? [duplicate]

When I plug in my flash drive, it gets auto-mounted. If I right click on the drive and select 'eject', then it's unmounted. Now, I want to remount the drive in Terminal. How do I do this? I've ...
2
votes
4answers
303 views

USB 500GB external drive mounted with undetermined permissions, missing data

Note: This situation is evolving. Please see the output at the end of this question for the current situation. I'm using Linux Mint 14. Recently, I repartitioned one of my hard drives, and I backed ...
2
votes
2answers
165 views

Is it possible to mount one H.D.D. via USB Hub on two PCs?

Having a HDD Drive on a USB hub with two partitions. Can I mount first partition to Computer A and second partition to Computer B without trouble? Or even better, would it be possible to mount one ...
2
votes
2answers
103 views

How should I format a USB prior to writing an ISO to it?

I found these Debian EeePC HowToInstallUsingStandardInstaller instructions at the Debian Wiki, stating that I can install an ISO to a USB using this: dd if=debian-*-netinst.iso of=/dev/sdX Do I ...
2
votes
2answers
400 views

Detect bad USB cable

Is it possible to detect with confidence via command line that the USB cable is damaged? I tried to connect my printer and it's not printing with this cable, I guess that the culprit is the USB cable. ...
2
votes
1answer
79 views

Mounted a USB to /home and lost all the sub-directory's

I have been searching for a about a hour but I can't find a answer if someone knows another thread that will help I would gladly look through it. So what happened is I am learning about how to mount ...
2
votes
2answers
1k 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 ...
2
votes
2answers
707 views

Unable to remove the files from an usb drive (neither by dd /dev/zero nor by rm -r)

I have a flash usb drive and up till now it has worked well. Recently I recorded iso to it using dd. Now I want to delete it. $ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT ....... sdb ...
2
votes
2answers
329 views

Swap alt and windows key except when using an external keyboard

On my laptop the Alt and Windows keys are in the opposite positions that I'd prefer them in. Swapping them is fairly easy. However, my external (USB) keyboard has the Alt and Windows keys in the order ...
2
votes
2answers
1k 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). ...
2
votes
1answer
150 views

Where in the linux kernel sources can I find a list of the different keyboard scancodes?

I was looking for a list of keyboard scancodes in the linux kernel sources, but I did not find anything. Does someone know where to find these? Especially the USB scancodes would be interesting.
2
votes
2answers
1k views

How to check if an USB device is present without lsusb?

I want to see if an USB device is present but I don't have lsusb. Is there another way to check if an USB device is present without having to use lsusb?
2
votes
1answer
232 views

Why do Linux and OSX require no driver to connect to an Android device?

I asked the dual question at superuser and didn't really get an answer - thought I might have better luck here. I've started down the path of tinkering with my Android phones. What's curious to me is ...
2
votes
1answer
152 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 ...
2
votes
2answers
79 views

Kodak still camera udev problem

My still camera is not includev in udev list. lsusb stands: Bus 007 Device 016: ID 040a:058b Kodak Co. Digital Camera So I add to /usr/lib/udev/rules.d/40-libgphoto2.rules ...
2
votes
1answer
3k views

How do I get my wireless USB mouse working

My wireless USB mouse is not plugging and playing. This is my first time using linux (Ubuntu 12.04) and I'm trying to get a development environment going to learn to use the shell, Python, and other ...
2
votes
1answer
299 views

What is the udev rule to allow specific thumb drive vendors?

How can I write a udev rule that whitelists specific vendors and doesn't allow other USB drives? Do I put it in /etc/udev/rules.d, or /lib/udev/rules.d? What command do I run to test if the rule is ...
2
votes
1answer
1k views

Does my Ubuntu have module for USB 2.0?

I copy some files between my external HDD and Lenovo T400 laptop. The external HDD is 7 years old and has "USB 2.0" on its enclosure, and the laptop is 3 years old. The copying speed is mostly ...
2
votes
2answers
2k views

How to enable force feedback in kernel 2.6.34 - 64 bit?

The wheel is Logitech driving force DFGT. The platform: linux-dopx:/home/anisha/ # cat /etc/issue && uname -a Welcome to openSUSE 11.3 "Teal" - Kernel \r (\l). Linux linux-dopx ...
2
votes
1answer
222 views

Some keys on keyboard map to numbers instead

I'm running Leenux 5.1 from a USB stick using unetbootin. It works ok, except my keyboard is messed up -- pressing k results in a 2 instead (the 2 key also types a 2). How could this happen?
2
votes
2answers
169 views

Writing usb on FreeBSD to access on windows

How can I write "stuff" into USB drive on FreeBSD such that, the "stuff" is accessible in Windows [yes my wife still uses that :( ] and Ubuntu?
2
votes
1answer
1k views

How do I prevent gnome to mount my usb device when I'm using KDE?

in KDE, when I plug a USB storage device, I see a nautilus window automatically open, and I'm obliged to use nautilus if I want to umount it properly Dolphin gives the following error: ...
2
votes
1answer
97 views

mounting removable USB disks with nodev,noexec,nosuid

When I want to use a USB disk on my desktop, I insert the disk and mount it manually, for example: mount /dev/sdb1 /mnt/usb I know that I can specify mount options with -o, such as mount -o ...
2
votes
1answer
64 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 ...
2
votes
1answer
2k 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 ...
2
votes
1answer
2k views

How to troubleshoot No Sound on CentOS 6.4 w/ USB headset?

Have a new Dell machine with a fresh install of CentOS 6.4. I have a headset hooked up via USB, but no sound. I'm not sure CentOS is recognizing my sound card -- or maybe it's not recognizing the ...
2
votes
2answers
44 views

Would my downloaded Ubuntu, require an Internet Conncetion?

So I download a setup of Ubuntu 12.04 LTS of about 600 MB (don't remember the actual size) and burned it on a USB using unetbootin. So, Is that Ubuntu, the Offline Installer? As I cant run online ...
2
votes
3answers
9k views

Run CentOS 6 from a USB flash drive

I have a 16 GB USB flash drive that I would like to install CentOS 6 on so that I can boot into it on other computers. The reason for this is because I am going to be upgrading to VPS hosting and I ...
2
votes
1answer
2k views

Using screen to connect to Cisco console

I am trying to configure a Cisco (small business 300) via serial port. I read here: http://www.commandlinefu.com/commands/view/6130/use-screen-as-a-terminal-emulator-to-connect-to-serial-consoles ...
2
votes
1answer
2k views

how to disable USB devices based on vendor id in Linux environment?

I want to disable usb devices based on vendor id in Linux environment. I want to allow only specific USB devices, based on vendor id.
2
votes
2answers
992 views

USB Driver Compilation Error

I'm currently trying to compile a Linux USB UART driver, which is provided here: http://www.exar.com/connectivity/uart-and-bridging-solutions/usb-uarts/xr21v1410 The driver consists of 2 header files ...
2
votes
1answer
539 views

Installing Debian on USB

From my Ubuntu, I want to create a bootable Debian USB. I tried to install Debian with debootstrap. A brief list of commands is mount /dev/sdb1 /mnt debootstrap sid /mnt http://ftp.debian.org/debian ...