USB is an acronym for Universal Serial Bus. The current USB standard is USB 3.0, which supports transfer speeds of up to 625MB/s. USB devices are plug-and-play.

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229 views

Lenovo T440p Docking Station USB only works half the time

I've recently bought a Lenovo T440p and have realized that usb devices connected via its docking station do not connect if I boot the computer while it's plugged into it. When I boot the laptop when ...
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770 views

Fujitsu S1300i advances document but doesn't scan

I'm using a Fujitsu ScanSnap S1300i. Using sudo as a temporary workaround to minimise any permissions problems: $ sudo sane-find-scanner found USB scanner (vendor=0x04c5 [FUJITSU], product=0x128d [...
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87 views

USB 3.0 port not working properly

I am having some problems with a USB flash drive when my computer resumes from suspend. I am running Ubuntu 16.04 on a Dell XPS L521X. This laptop has three USB ports, 2 times USB 2.0 and 1 time USB ...
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64 views

Repairing Flash Drive that wasn't ejected with I/O errors?

I was dumb and didn't eject my flash drive, now it won't show up in mount, can't be manually mounted, dd just hangs when trying to zero it out, and I get I/O errors when trying to format it. I know ...
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48 views

“Move To” Command Deleted My Files?

Have a USB Flash Drive that has worked in the past every time I use it. Today, I tried to copy some files over to it, so I plugged it in, the computer recognized it. I opened it in on the desktop, ...
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18k views

Installing Ubuntu on early 2011 Macbook pro using USB Stick: ''i8042 No Controller''

I have an early 2011 macbook pro. My primary hard drive location has a mac os X yosemite installation. I replaced the optical drive with a secondary hard drive, which has two partitions created with ...
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1k views

Mount usb to serial adapter CANBUS and can-utils ubuntu?

I have this adapter and I'm trying desperately to mount in in Ubuntu so I can use can-utils to monitor the device but I'm failing. I'm trying to communicate with a serial to can-bus adapter in 14.04 ...
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2k views

External PCIe USB 3.0 Controller NEC Corporation uPD720200 not recocnized since the upgrade to 14.04

I use an external USB 3.0 PCIe card. It used to work like a charm on 13.10. But ever since the upgrade to 14.04 hot-plug doesn't seem to work any more. It used to work before. Only when this card is ...
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377 views

Why does an external USB hub show up under different USB bus/port numbers than other devices plugged into the same port?

I'm working on setting up a system where I want to have certain devices always named the same way when they are plugged into certain ports. I originally set up a udev rules file with the devices ...
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783 views

Conexant Modem running under Ubuntu 12.04 LTS

I've bought a USB 56k Dailup-Modem for using HylaFax later on. The Modem gets recognized by the system via lsusb as follows: Bus 006 Device 002: ID 0572:1329 Conexant Systems (Rockwell), Inc. But ...
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17 views

How can I add additional options to drive mount notifications?

When I plug in a USB drive or a USB stick, I would like to add more options (like rsync files OR backup to device, ...) to the popup menu. When one option is clicked, I'd simply like to start a shell ...
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50 views

Trouble with USB Permissions/Ownership

I'm trying to use a USB drive (FAT32) on my laptop running Ubuntu 14.04, but the permissions are messed up and I don't understand them well enough to fix it. Running ls -l in /mnt shows drwxrwxrwx ...
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55 views

Ubuntu 15.10 doesn't recognize my USB 3.0 flash drive

I have a 8 GB USB 3.0 Silicon Power flash memory. I'd been using it on my laptop,which only has three USB 2.0 ports, until it didn't anymore mount on Ubuntu after being plugged in. The problem is that ...
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84 views

How to automatically run a program when certain device is pluged in?

I have home made device that connects via USB port and I have made a c++ program for data acquisition from that device. I have modified the /etc/udev/rules.d/50-ttyusb.rules so that the device has ...
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58 views

Ubuntu dropping USB Keyboard Chars

I bought a barcode reader which connects over USB and mimics a keyboard. Connecting to Windows, the barcode is read correctly but connecting to Ubuntu, it drops some repeating chars. It consistently ...
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37 views

Fastest File System Type

We currently/still write to tape for off-site backups (avg size is 80 GB per day) and the robot is misbehaving as of late. I'm setting up an NFS share on Ubuntu Server 14 (16 when it releases) to ...
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38 views

Loosing Root Access On USB Disconnect

When I plug in my usb and then unplug it I unexpectedly loose root access on my computer. Furthermore, when I reboot my computer it prompts me with the message saying Errors were found when reading ...
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48 views

Usb mic isn't working in an Ubuntu 14.04.3 live session

Issue: Recently, I created a bootable, persistent usb with Ubuntu 14.04.3 LTS. When I boot into a live session, (try Ubuntu feature) my usb mic (blue snowball) doesn't work. I can't get any sound ...
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234 views

My Laptop has USB 3.0 but Ubuntu 14.04 doesn't recognize it?

I have two USB 3.0 ports in my dell inspiron 5421 laptop . The ports marked as SS meaning super speed. But when I run the command lspci -t this is the output /: Bus 02.Port 1: Dev 1, Class=root_hub, ...
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56 views

File transfer rate to USB stick is totally variable

I just rebuild my old desktop, which is now running Lubuntu 15.04, and tried to transfer a 1.3GB file into my 8GB thumb drive. I was immediately reminded of a problem that has plagued me for a long ...
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109 views

Is it possible to add a network interface to Ubuntu 14.04 LTS Server Installer

I am currently trying to setup an unattended usb installer for my company (using ks and preseed) using Ubuntu 14.04.3 Server LTS. We purchased the Dell XPS 13 (9343) (no onboard nic) with the Dell ...
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173 views

USB device is not recognized on HP laptop with Ubuntu 14.04

I am trying to connect a USB braille cell device to my HP Folio 9470m laptop running Ubuntu 14.04.2 (amd64), but it fails with the following errors (from dmesg): [ 1689.038374] usb 3-2: new full-...
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7k views

Share internet from PC to unrooted android smart phone connected via USB cable

I am running Ubuntu 14.04 LTS with Windows 7 Dual boot (both 32 bit) in my desktop. I use cable broadband (Ethernet). I have an unrooted android smart phone running KitKat 4.4.2. This device has a ...
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3k views

USB hard drive not showing up under /dev/

I'm running Ubuntu 14.01 on a BeagleBone Black with LXDE. I have a USB hard drive that auto mounts (a prompt comes up in LXDE and I have to enter my password) if I connect it after the computer have ...
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688 views

14.04 - USB microphone speaker device not working anymore

I own a PJP-20UR web conference microphone speaker, I have been using this USB device for ages with Linux, Windows, Mac never ever have had any issues with it. Since I upgraded from Ubuntu 12.04/12....
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2k views

MD5 says the checksum is correct but still “Check finished: errors found in 2 files”

I'm attempting to dual boot windows 8.1 and ubuntu but I can't quite seem to create a USB boot drive without errors. Twice now I have downloaded ubuntu-14.04-desktop-amd64 from the official website, ...
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350 views

Getting two USB devices to run on different buses

My objective is to get two webcams streaming simultaneously on my computer. Because of bandwidth limitations of the uvcvideo driver (or see bottom of UVC faq), I need the two webcams to be on ...
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283 views

Assigning ehci-pci to an Epson V33 scanner instead of xhci_hcd

I have recently installed Xubuntu 14.04 on two computers. Computer A is a DELL Aptitude E5430 laptop, whereas Computer B is a home-mounted desktop, with an ASUS H87-Plus motherboard. I have been ...
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595 views

What is the difference between /dev/tty* and /dev/bus/usb/001/002?

When I plug in a device that uses the LUFA USB framework (or any USB<->serial peripheral), Ubuntu creates a /dev/ttyACM* device file. It also creates a /dev/bus/usb/001/002 file and a /sys/bus/usb/...
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274 views

Why doesn't gphoto2 trigger in time

I want to remote-controle my DSLR with an Ubuntu-PC and make a timelapse-video. I found out, that i should use gphoto2 for that. But i've got a problem with it.I type into the terminal: gphoto2 --...
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2k views

What is the state of the Ubuntu USB 3.0 driver

I have a device, that over USB 3.0 enumerates as a speaker and a microphone (two interfaces, each with a single endpoint) under Windows 7. However, under Ubuntu 13.04, only the speaker shows up. How ...
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282 views

Canon MP600 USB-connected Scanner is not recognized by sane-find-scanner

I have a Canon Pixma MP600, which is supported by xsane with pixma backend. I have Xubuntu 12.04, this is the result of sudo sane-find-scanner -v command: searching for USB scanners: checking /dev/...
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733 views

xubuntu 13.10: automount usb sticks

I have a freshly installed Xubuntu 13.10 on the Lenovo T520 laptop. In the Settings Manager — Removable Drives and Media I have the Mount removable drives when hot-plugged and Mount removable media ...
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4k views

USB 2.0 port does not work, USB 3.0 ports do work, running Ubuntu 13.04

I have 3 USB3.0 ports and 1 USB2.0 port on my Laptop (w230st clevo). Unfortunately,the USB2.0 port does not work, despite being shown on lookup with lsusb, output shown below. Strange is, that lsusb ...
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347 views

Installing Fritz Wireless USB Adapter

How do I install a Fritz USB wireless adapter on Ubuntu so I can access the internet? I have the software required, but I am not sure what to do next. Ubuntu version 13.04. Output of lsusb: don@don-...
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1k views

Slow USB transfer speeds

I am experiencing very slow USB transfer speeds when trying to backup files to a USB HDD. I am not entirely sure when the problem 1st occured but there was definitely a period using 12.04 where ...
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878 views

wifi usb dongle detected but no wlan interface

I'm using ubuntu 12.04. When I insert my philips PTA01 usb wifi dongle, in dmesg i can see: [ 1181.535290] usb 2-3: new high-speed USB device number 4 using ehci_hcd [ 1181.684074] usb 2-3: New USB ...
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855 views

(13.04) PowerTOP reports lots of usage by USB2.0-CRW, but autosuspend is on

I used to be able to keep my power usage under 10 watts without WLAN on but now that rarely happens. One reason might be this, reported by PowerTOP all of the time: Power est. Usage ...
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2k views

USB pen drive is detected in Windows but not in Ubuntu

My Sony pen drive gets detected in windows but I cannot find it on my Ubuntu. I formatted the drive with FAT,FAT32 and NTFS but the same problem. I went through FAQs but did not find anything helpful. ...
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76 views

cherry st1044 not recognized in ubuntu 12.10

I cannot get Ubuntu 12.10 to recognize my Cherry ST1044 smart terminal reader. The terminal shows the PCSC software is installed but "no service" is also displayed in the terminal.
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2k views

Getting DVI to work through Lenovo USB Port Replicator in 12.10: Instability and getting it to use xorg.conf file

Setup: Computer is a Lenovo Thinkpad SL500 using the USB Port Replicator running LiveCD for Ubuntu 12.10. Computer has USB attachment to port replicator. Port replicator has DVI to HDMI convertor ...
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523 views

USB2VGA device not listed as output device

When I type xrandr the usb2vga device "Magic Control Technology Corp. (USB2VGA dongle)" does not show up. A reboot with the device plugged in doesn't change it. The kernel.log shows that it has been ...
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711 views

Unable to connect to the MTS Mblaze usb

PCEH25EN:~$ sudo apt-get install wvdial E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/), is ...
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607 views

How do I share USB VFAT Drive with other users?

I want to share pictures between my wife and me, on an external USB drive. The OS is ubuntu 12.04. The drive is a Western Digital 500 GB and sudo blkid /dev/sdc1 return LABEL="My Book" UUID="9389-61cd"...
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460 views

How can I make my ubuntu 12.04 act like an external usb hard drive?

Quick breakdown, I have a Roku 2 XS that has a USB port that you can connect a flash drive or external hard drive to. I also have a box running Ubuntu that is the household media storage center. I ...
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980 views

ubuntu 12.04 stopped showing every usb devices

Ubuntu was running perfectly, suddenly my internal HDD partitions (except file system) and partitions of external HDD disappeared. I was able to mount the partitions of internal HDD via disk utility, ...
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23 views

Repartitioned USB drive (FAT32 to NTFS), now cannot mount/access from command line

I needed to format and repartition my USB drive from FAT32 to NTFS in order to install Node.js live-server (cf. npm live-server install: symlink error (even when running as root/admin)). After ...
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20 views

Windows corrupts primary GPT table

I have an external hard disk that I share between my Linux laptop and my Windows 10 desktop. The disk has a GPT table, with a NTFS partition and a partition encrypted with Truecrypt. The disk works ...
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21 views

Ubuntu installation failure 16.04

I am trying to install ubuntu 16.04 alongside windows 10. The checksum is correct, however after creating a bootable usb with the iso, the usb finds 2 errors when verifying before installation. I ...
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108 views

Need TP-Link T1U driver for Ubuntu 16.04

I'm brand-new to the world of Ubuntu, and completely clueless. I am trying to install a TP-Link Archer T1U USB wireless adapter, but I can't find an appropriate driver. The TP-Link website only states ...