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

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56 views

Initialize USB keyboard attached while suspended

I have a laptop that I sometimes want to use with separate peripherals; external monitor, external keyboard and external mouse. When in this mode, I want to keep the laptop closed and tucked away (as ...
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212 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 ...
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793 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 ...
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106 views

Completely disable / deactivate USB in Ubuntu 10.04

I have some Ubuntu 10.04 based portable touchscreen computers at workplace and sometimes people would use USB data cable to charge their phones from the USB port. Now I have usb storage access ...
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38 views

Frugal installation on WIN 7 no admin rights

Laptop from my work has WIN 7 Enterprise, but I have no admin rights on it and under no circumstances I would change partitions. However it does boot from USB. As I want to use Linux on a regular ...
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176 views

Why are USB partitions & disk capacity not coherent between fdisk, parted, dmesg & /dev/sdXy

Disclaimer: I initially posted this on SF : http://serverfault.com/q/645670, but I think it better fits here First, a word of context: I'm trying to burn an ISO on a 16 Gb USB key, but I'm having ...
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144 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 ...
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131 views

What happens after dialing USB 3G modem

I have a hard time understanding how a 3G USB modem communicates with OS. As far as I understand, pretty much all USB modems work in a similar fashion - they expose USB CDC device and to connect, ...
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165 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. ...
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54 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 ...
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50 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 ...
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357 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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222 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 ...
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846 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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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 ...
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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. ...
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62 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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50 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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289 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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471 views

Brother scanner and missing /dev/bus/usb entry?

APR 2015 UPDATE: Scanning just worked! The update to Mint 17 (aka Ubuntu 14.04) did not make any difference, but the most likely explanation is that the recent update to Ubuntu 14.04.2 as the base ...
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408 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 ...
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621 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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49 views

Why does USB errors with my mobile phone stop the computer from interacting with services?

I set my Android phone to use "Mass storage" as the connection mode (In Settings → Storage → context menu item USB computer connection) to easily be able to browse the files. Then I plugged ...
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197 views

Removed USB storage device is still mounted

I'm working on a embedded linux system based on busybox. Sometimes a USB device which is physically removed from the post is still displayed in mount, df or /proc/mounts. If I reattach the device, it ...
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513 views

Device in fstab not mounting at boot

The following is in my /etc/fstab file: UUID=596ac80a-5571-41dc-a00e-b3270ecfe7c4 / ext3 errors=remount-ro 0 1 /dev/sdb1 /home/teamspeak/ts3/files/virtualserver_1/channel_527 ext3 ...
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1k views

Save motion output videos in USB Drive

I'm using a USB drive in my Raspberry to store my website. Now I want also save my videos made with motion. I wasn't able to save in a folder different from /tmp/motion so googling I found I had to ...
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182 views

How to make a mouse driver from a tty?

I have an Arduino plugged in my computer through the uart/tty port. I would like to use it as a mouse but I have no idea where to start with kernel/device drivers/etc. Here is a little summary of ...
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197 views

Scanner works in laptop, not in desktop

I have an Epson Perfection 660 flatbed scanner that works on my laptop. This is what appears in /var/log/syslog when I plug it in: Dec 18 15:43:57 lap kernel: [   31.868278] usb 6-2: new full-speed ...
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2k views

All USB ports detected as USB 1.0, not USB 2.0

My Ubuntu 13.10 server (Upgraded from 11.10) has always had an issue with mounting USB 2.0 devices. Despite legacy being turned off on the motherboard bios, the output of lsusb -t always shows the ...
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153 views

Mount an SD card over USB?

I'm currently using: insmod g_file_storage.ko file=/dev/mmcblk0p1 stall=0 removable=1 This works as I can see the device in Windows. However when it comes to changing a file, the changes are not ...
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165 views

PXE USB BOOT Debian

I have installed a Debian. I rsynced it. I load it on my client through PXE from NFS to make a backup. But I need my Computer(NFS-host) at the same time to make something other with it. For example, ...
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128 views

No USB 04b4:0307 microphone input after Ubuntu 10.04

I was very happily using VOIP SIP with Ubuntu 10.04. Since I upgraded to 12.04, not only has Ekiga become very buggy and inconvenient, but, the subject matter of this question: the microphone of my ...
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397 views

USB ports not working

Ok, got a Puppy Linux Wary 5.3. running on an old laptop with USB ports. Now, here's the strange part ... none of them work. When I stick in a USB-stick there's no reaction. Still, lsusb lists ...
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109 views

Run script on “Safely remove” action in KDE

I have a Linux box with KDE 3.5.10. I do not plan to upgrade it soon, so please don't answer that. Now, I want to run a script each time I select the "Safely Remove" option on a mounted USB ...
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463 views

How to load kernel module in Chromium OS?

I've installed the Chromium Vanilla by Hexxeh to a USB drive, but I can't use it on my computer because it lacks the carl9170 driver, which is needed by my adapter (a D-Link DWA-160.) I've managed to ...
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83 views

Flash disk USB Fedora installation reset counting

I have created a flash disk with pen drive Linux universal USB installer to install Fedora 18 on my system but after booting, a counter starts and then reset and never installation begin. My system is ...
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1k views

Install Arch(Bang) - Create Usb - Uefi

I am pretty new to Linux and want to install ArchBang-Linux, but I fail at creating a bootable USB-Stick. Can someone explain this procedure to me in a little more detail? ...
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233 views

Wireless Ad Hoc NAT

I got "OURLiNK 802.11n" mini USB wifi adapter for my Raspberry Pi, but I also would like to use it w/ my Scientific Linux 6.1 $ cat /etc/redhat-release Scientific Linux release 6.1 (Carbon) $ ...
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789 views

w_scan: no data from PAT

I'm using w_scan to get channel list for my DVB-T stick. But despite channels being found, channels.conf file is empty. I suspect Info: no data from PAT has something to do with this. I know the ...
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481 views

RT2800USB wireless adapter stops scanning

I have a Linux machine, and I'll switch between using an RTL8187 based card, and a RT2800USB based card (the cards are both USB dongles by the same manufacturer). I've loaded the drivers for both ...
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2k views

WD MyBook 3TB - Gparted failed & HDD partitions recovery?

I have this new WD MyBook external HDD (USB 3.0/2.0); I created 3 partitions all of them ext3 type (~1 TB | ~1 TB | ~750 GB) I loaded lots of files all the partitions were like ~30% full on each, and ...
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7 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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2 views

Xsane point to webcam instead of scanner

What I've noticed is a wide documented bug issue as reported by follow links: Bug #563416 sane-backends does not detect scanner, only webcam Bug #546789 Simple scan can't see my printer (scanner), ...
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17 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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13 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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10 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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5 views

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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47 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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18 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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23 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. ...