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

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Unable to detach a USB device on Ubuntu 14.04

I was using udisks to unmount and detach usb device with following commands which works just fine on Ubuntu 10.04 udisks --unmount /dev/sdb1 udisks --detach /dev/sdb Because udisks is not available ...
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80 views

Interpreting usbmon output

I get the following output from usbmon when I type the lower case letter 'a' on my Ideazon Z-Board: ffff88007fc01240 1805746449 C Ii:3:004:1 0:8 8 = 00000000 00000000 ffff88007fc01240 1805746462 S ...
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32 views

How to force a device to enumerate as different class USB device?

I purchased an inexpensive RFID reader. If works great with my Ubuntu box, with one exception. It enumerates as a HID device, and more specifically USB keyboard. That is, if I have a console open and ...
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39 views

USB dongle not accessible in Linux

I have a USB dongle (security token) to connect company servers; in fact there is a private LAN with some servers in it. The company has got me a public address with this security token to connect to ...
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2answers
46 views

How to skip boot time custom udev rule?

I have following udev rule in /etc/udev/rules.d/80-foo_usb.rules to detect pen drives, KERNEL=="[a-z][a-z][a-z][1-9]", SUBSYSTEM=="block", ACTION=="add", PROGRAM+="/test/foo.sh $kernel $parent" It ...
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1answer
67 views

usb linux format

I have a Usb drive and that is connected to a laptop running Linux (Mint). As soon as I install some software in it (USB memory) seems like it recognizes it as a windows partition and doesn't install ...
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1answer
26 views

How to make sure files are present when usb mounts?

When my computer mounts a USB, the files don't show up immediately, which is throwing off my script (which is quite quick). How do I make sure that the folder doesn't appear in my mounting directory ...
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35 views

Wireless device not showing up

So I have a Product: VNT USB-802.11 Wireless LAN Adapter. I connected it to my computer today after not having it connected for awhile and it suddenly does not show up as a network adapter. I checked ...
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43 views

Install Linux on a USB

I'm trying to install Elementary OS on a USB drive so I can carry my OS with me. I have installed the ISO to the pen drive and can boot into the desktop no problem. When I come to do an install the ...
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76 views

Kali Linux on Acer Chromebook CB5 311

Hello i would like to install Kali Linux on my Acer Chromebook. I made a bootable USB using the acer image from this site: https://www.offensive-security.com/kali-linux-arm-images/ I enabled ...
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371 views

Linux Mint: ACPI PCC probe and usb descriptor errors during boot

I'm getting a lot of errors during bootup on Linux Mint 17.3 Cinnamon 64 bit. For the most time, I've been able to boot (the error messages just flash and disappear) with no problems with my system. A ...
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22 views

Possibilty of DisplayPort over PCIe

I'm trying to figure out if it would be possible to add a DisplayPort to my Linux PC using a PCIe slot. I have found cards like ...
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1answer
33 views

USB LABEL in different language

If the USB LABEL (name) is in different langauage (Hindi or Chinese) how do i get to know which language it is coded to pass to the iconv or is there any way we can know the language which has been ...
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132 views

Why does it take so long to detect an usb stick?

I'm writing an initramfs-script and want to detect usb-sticks as fast as possible. When I insert an usb 2.0 stick, the detection of idVendor, idProduct and USB class happens within 100 ms. But the ...
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1answer
24 views

How to install packages onto a flash drive

I have a computer with Ubuntu Linux, and I have no more room on PC, so I have a flash drive that I want to install packages onto, is there any way to install a package onto a flash drive?
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1answer
37 views

Bluetooth dongle suddenly dissapears

A bluetooth dongle attached to my banana pi suddenly dissapears from the usb devices list. Lsusb doesnt show it at all, but maybe this is interesting, a piece from dmesg: [ 14.777099] udevd[167]: ...
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2answers
69 views

Can't mount anywhere but to /mnt

My system has developed a strange defect after a distribution upgrade (OpenSuSE 12.3 -> 13.2). I have various USB devices that I want to mount to different top-level directories: the backup drive to ...
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1answer
31 views

USB only detected when connected to internet

For some reason, my laptop does not detect USBs at all unless I am connected to the internet. (I also am not very good at using Ubuntu, so I have no idea what could cause the problem.) Note: I have ...
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2answers
87 views

fdisk: could not detect sector size of USB hard disk on FreeBSD

I have an NTFS formatted USB hard disk that works fine (mounts and unmounts cleanly) on my windows desktop. I can't however seem to mount it on my freebsd box at all. Stripping this back to the ...
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40 views

USB audio not working when plugged in during boot

I have a problem with the audio in my ThinkPad OneLink Pro Dock not working with Linux. I have had this problem with OpenSUSE 42.1, Tumbleweed and Fedora 23. I think I will have it with any other ...
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51 views

USB Serial Port Settings With STTY

I needed a way to connect to a usb serial port to send and receive data from Arduino boards. I found a really awesome little script that was working great, until it suddenly stopped working. The ...
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144 views

USB ports do not wake up from suspend to RAM

I have an AMD Athlon 5350 (desktop, not a notebook) and recently upgraded from openSUSE 13.2 to Tumbleweed (openSUSE's rolling release). After that I gave suspend to RAM another try after it had just ...
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33 views

Cannot install D-Link wireless Range Booster N usb on kali linux VMWARE

I have a D-Link Range Booster and tried to use it with KALI in vmware. I have it installed on my Physical Windows machine then when I use it with kali it doesn't detect it. This is the vmware sign ...
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74 views

Mounting efi disk on external USB

Recently I bought new sshd to replace my old one on my notebook, but I have problem. I installed Ubuntu 15.10 on new one and put the old on usb case I have, but the disk on USB doesnt have partition ...
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43 views

How to set usb stick's ntfs filesystem's attribute to readonly in linux

I know how to set readonly attribute to ntfs filesystem of a usb device by using diskpart tool in windows. attributes disk set readonly but how to set readonly attribute to the same usb device ...
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2answers
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USB flash drive formatted as “Linux Live CD” keeps the CD-ROM name after re-partitioning

I have an USB flash drive that I formerly used as installation medium for Linux Fedora. The stick still has the "Fedora Live USB" installation files on it. When I insert it into my olde laptoppe, it ...
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24 views

Null device handler and serial number is 0

I am working with a camera that connects via usb. When connecting the device, dmesg shows the serial number as 0 and when I try to run code to take an image, I get a Null handler error. I figure the ...
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43 views

Polling for a Bluetooth Button Push

I have a bluetooth button that I have successfully paired several times with various raspberry pi's and linux boxes. The button works as a unique doorbell and various other applications, but I have ...
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2answers
95 views

How to install Kali Linux on a usb flashdrive [closed]

I was wondering is there any way to install Kali Linux on a usb drive instead of my SSD. I have a 32GB flash drive that I want to use instead of an SSD partition. The reason for this is that i want to ...
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49 views

Linux - Reset Linux Foundation 2.0 root hub

I would need to reset the USB root hub on Linux. Specifically, each time lsusb is executed, the Linux Foundation's root hub with Vendor ID 1d6b is shown: # lsusb | grep 'Linux Foundation' Bus 003 ...
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149 views

Attach UVC camera to non-V4l2 Android device without rooting

The main issue is arising when I am trying to connect UVC compliant camera having CMOS sensor OV6612, to an Android device having kernel 3.0.x and OS 4.0.x, not having v4l2 driver. And no streamed ...
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Texas TI RFID Reader Hardware

[ 7598.927163] usb 1-1.3: USB disconnect, device number 10 [ 7636.541074] usb 1-1.3: new full-speed USB device number 11 using dwc_otg [ 7636.646870] usb 1-1.3: New USB device found, idVendor=2047, ...
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59 views

disabling usb device debian [duplicate]

How can I disable a usb device on debian? I am using a macbook pro but I have installed debian jessie 8.2 on it. the USB device: Card Reader (Apple) is pulling way too much power and I don't even use ...
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37 views

ADB doesn't recognize a Samsung GT-I9000

I've connected the phone via USB. The phone is rooted, USB debugging is enabled and ADB has root access. The system is a vanilla Debian 8.3.0. lsusb: [...] Bus 002 Device 004: ID 04e8:685e Samsung ...
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48 views

find serial com port

I'm using a CH341-UART Converter for sending some string data to USB port. How can I find the COM port number for connected device? For example in this program: import serial ComPort = ...
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1answer
39 views

What format gives photorec to files?

I have to recover a file from my usb. I didn't find it on the net. How does photorec call files of unknown format? For instance, I have a file named *.jks . How can I find it in the recovered ...
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1answer
149 views

How to check the erase block size of a Usb flash under Linux?

How to check the erase block size of a USB flash under Linux? Someone said /proc/mtd might be helpful, while for my Centos7 server, there isn't such file. Thanks in advance. Updated on Jan 28 2016: ...
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2answers
101 views

I can't access my USB device after mkfs.ntfs command

I had used these commands (as root): umount /dev/sdb1 After, mkfs.ntfs /dev/sdb1 It took a long time to format it and I couldn't wait it. Before it finished formatting, I had canceled operation. ...
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1answer
40 views

Unable to mount USB media in sagem fast3304 V2 router (busybox v1.01 inside)

I have a wireless router that runs busybox (V1.0). A media server (Twonky Media Version 3.4) running on this router. I would like to use its USB port to mount an external drive containing mutltimedia ...
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42 views

How can I figure out why an HID unikey device is not being recognized by the software needing it?

I have a custom built CentOS machine. For those of you who know Vagrant, the image is at https://atlas.hashicorp.com/puppetlabs/boxes/centos-7.2-64-puppet. When I connect an HID Unikey device to this ...
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2answers
62 views

How to recover a totally dead USB?

I have been loading a USB with an .iso image to run Ubuntu live. It worked on Apple and did not on other laptops. After wiping, re-downloading, re-formating, re-partitioning to try make it work, it ...
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0answers
310 views

How to install DisplayLink driver on LinuxMint 17.3

I have a USB 3.0 docking station connected with my laptop having LinuxMint 17.3. I can't manage to install DisplayLink driver on it. I could make it work with Ubuntu 15.04, but with LinuxMint it wan't ...
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105 views

Is there a general USB 3.0 support in OpenWrt?

the only information i found about this topic is outdated since 2011/02: it says there is no support for devices with usb 3.0 "so far"! according to the german wikipedia since version 2.6.30 the ...
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63 views

How to install ubuntu on live USB stick that I booted from?

I have a old netbook with single USB port and broken harddrive. I've somehow aquired a 16gb lubuntu 15.10 willy live USB. I want to use this as primary OS on my netbook. Since I don't have access to ...
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1answer
153 views

USB Bluetooth dongle not working

I am struggling to get my bluetooth adapter work on my Linux desktop. I see it when I plug it in, but basically, nothing else works correctly: $ lsusb Bus 002 Device 006: ID 0a12:0002 Cambridge ...
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1answer
71 views

How do I load a kernel module later in the boot sequence?

I've been experimenting with the g_mass_storage kernel module. I first tried loading it by putting it in /etc/modules and the options in /etc/modprobe.d/file.conf This worked, but when I connected ...
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112 views

How do I mount a USB external hard drive in RHEL rescue mode

I had a boot failure on a RHEL 6.2 machine and I can now only start it in rescue mode with the recovery CD. I would like to move all the data to an external USB-mounted drive but I am having problems. ...
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97 views

How can one determine whether an internal SD card reader is connected to internal USB3 hub?

I have a Dell Chromebook 11, which has two external USB3 ports, and an SD card reader. I am trying to establish whether buying a fast SD card would be worth it, compared to a fast USB stick, as a ...
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1answer
17 views

How to recycle USB device names on Linux after forced removal

When a mounted USB stick is manually unplugged (without unmounting it) the device name in /dev (e.g. /dev/sda ) is somehow reserved, plugging it on again will yield on my system the alphabetically ...
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12 views

stty: /dev/dtyU0: Invalid argument (NetBSD USB to serial interface)

I'm trying to interface a USB oscilloscope (Syscomp CGR101) to NetBSD. The 'scope has an FTDI USB-to-RS232 interface inside it. When I try stty -f /dev/dtyU0 I get back "Invalid argument" whether ...