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

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Gphoto2 does not output anything

I'm running ArchLinux and I want to download all the pics from my EOS1100D. However when I plug the camera and run gphoto2 --list-ports Nothing happens at all and the program get stuck. Here's ...
0
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0answers
117 views

Double-Ended USB Unrecognized Alfa AWUS036NHR

I have a wonderful little wireless adapter that works perfectly well on Windows, but drops the connection regularly in Arch. As far as I can tell, it's not getting enough power to function properly. ...
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0answers
128 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 ...
5
votes
1answer
705 views

udev rule for assigning known symlinks for identical usb serial devices

I have two (and possibly in the future, more) USB serial devices which are identical (down to the serial number, unfortunately) - they're actually BTC miners. Currently they end up as ttyUSBX where X ...
3
votes
2answers
440 views

How to mount a filesystem from a given USB bus:device

Recently I bought a new smartphone (with Android). When I connect it to my laptop, the (gui)file manager (PCManFM) recognize it and show me the filesystem at route gphoto2://[usb:001,003]. But I can't ...
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1answer
55 views

Missing usbserial driver

I am looking for the usbserial driver: “option” for Debian Jessie and armel architecture. Is there a package that contains this and other usbserial drivers? Where is the source-code for this driver ...
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1answer
227 views

USB 3.0 host controller suddenly stopped working

sudo lshw *-usb:0 UNCLAIMED description: USB controller product: 7 Series/C210 Series Chipset Family USB xHCI Host Controller vendor: Intel Corporation ...
3
votes
2answers
636 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 ...
0
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1answer
28 views

Yanked USB Key During Move [duplicate]

I'm using Fedora 17. I was backing up some files to a USB key. I was foolish and used the Move command instead of copy, and before the directory I was moving completed I accidentally yanked the usb ...
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2answers
92 views

Is there any other way to restrict USB storage?

I have been using /etc/modprobe.d/blacklist.conf to restrict USB storage but all employees are given root permissions, so they are removing restriction very easily. What I'm looking for is is there ...
3
votes
3answers
2k views

How to interpret the output of 'lsusb' — What are all these Linux Foundation root hubs?

I recently found out about the lsusb command while troubleshooting a headset issue.. My laptop runs debian and doesn't have anything plugged into USB currently, but when I run the "lsusb" command, I ...
3
votes
1answer
239 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 ...
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1answer
132 views

USB flash drive file transfers seem to hang multiple times during file transfer

I've got Scientific Linux 6.4 Installed (RHEL6.4) and am having trouble transferring to and from USB flash drives... Transfer seems to hang multiple times during transfer to the device, and transfer ...
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 ...
0
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1answer
158 views

How to debug a device that changes from /dev/ttyUSB0 to /dev/ttyUSB1 at will?

I have a device plugged to a CentOS server that changes randomly from /dev/ttyUSB0 to /dev/ttyUSB1 and vice versa. The device I'm trying to connect is this one. How can I debug this?
2
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1answer
136 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.
3
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1answer
387 views

usb0 -> what exactly is it for?

So far, I found out that on GNU/Linux /media/usb0 seems to be a mount point for Ethernet over USB. Nice. Question: Where is defined, what usb0 is exactly for? I distilled the above mentioned ...
3
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3answers
460 views

Best practice to backup a LUKS encrypted device

What's the fastest method to backup and restore a luks encrypted device (e.g. a full encrypted usb-device to a image-file). The usb-device can be decrypted/accessed. I'm looking for a solution to ...
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0answers
114 views

Kicking a process from a USB-Serial port

I have a application which is using the USB-serial port. Occasionally on shutdown the port cannot be opened by another instance of the program, and up until now the only way I know of the program ...
1
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2answers
81 views

Undo safely remove device [duplicate]

After I have asked the OS to safely remove device (USB) and can no longer access it. Without plugging out and in the USB how can I make the OS gain access to the USB device again? Basically ...
2
votes
0answers
132 views

lsusb partially fails, is the problem with the USB bus or with the command?

What does Couldn't get configuration descriptor 0, some information will be missing mean? Did the Host fail to get the descriptor from the device, or the command lsusb failed to fetch that ...
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0answers
839 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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1answer
198 views

Make a bootable CD without ISO file but from a CD

I have a Windows XP CD which I want to install on a USB Drive. However my own CD drive is broken. I have a friend's laptop on which Windows 7 is installed (and no idea if it has a CDROM of not). ...
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0answers
21 views

udev rules to identify a USB storage media? [duplicate]

I need to execute a command once a usb storage media is inserted. But I don't want to identify the device by the device file, e.g /dev/sdcX. So I can't use filters like KERNEL=="sd?" Is there any ...
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0answers
104 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 ...
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 ...
0
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1answer
169 views

network device name is changed by itself

I use a Ubuntu-arm, uname -a Linux arm 3.7.8-x8 #1 SMP Sat Feb 16 04:15:13 UTC 2013 armv7l armv7l armv7l GNU/Linux I have two USB WiFi interfaces that are named wlan0 and wlan1 on ...
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0answers
234 views

Embedded device GadgetFS connects to Linux machine and receives one USB setup request more than with a windows machine connected

I am using this GadgetFS implementation http://www.linux-usb.org/gadget/usb.c to have my embedded device connect to a Host. What's weird is, when I connect it to a Windows machine everything works ...
0
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1answer
57 views

Grub rescue if Ubuntu USB not plugged in?

I have my Ubuntu installed on a USB drive, and to log into Windows I need to have it plugged while booting, or I get the Grub rescue prompt. When the USB drive is plugged in, I get the Grub menu from ...
3
votes
1answer
1k views

USB Media filesystem problem

My USB is not detected recently, I tried mount, fdisk, dd, gparted, mkfs.vfat :~# tail -f /var/log/syslog Oct 27 12:54:29 mohammad-Inspiron-N5110 kernel: [18843.105772] usb 3-2: New USB device ...
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0answers
90 views

Writing a USB driver from scratch [closed]

I have an FPGA that I'm going to be connecting to a Raspberry Pi running Raspbian 3.6.11+. I've been reading up on how to write a USB2.0 HS driver for linux and how to reverse engineer USB ...
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1answer
96 views

2 or more programs in same USB serial converter

Having a network of lets say 10 devices in RS-485, connected to the linux PC with a RS-485 to USB Converter. Already there is a C program interacting with the serial converter at /dev/ttyUSB0. My ...
2
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2answers
956 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?
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2answers
86 views

embedded linux and powering usb stick

I have a problem where I need to read a usb-stick or a usb keyboard: When I plug in the USB stick or keyboard I can't get power to the device. dmesg says nothing I tried: for device in $(ls ...
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0answers
119 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, ...
2
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0answers
364 views

Debian Wheezy USB2 ehci_hcd

I have a friend who decided to switch to Linux from Windows. I was helping her to get up and running as quickly as possible but we ran into a problem which I can't seem to solve. She uses Debian ...
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0answers
216 views

Strange behaviour from special keyboard keys

OS: Linux Mint 13 Maya - MATE So, I had a new keyboard through today and there is something strange going on. The following keys are identified as the Shift key. LEFT SHIFT RIGHT SHIFT ...
3
votes
2answers
164 views

Permissions to print directly to USB printer

I've a netbook with Linux. I've a usb/serial printer and I added the line chmod 666 /dev/tty* to rc.local and it prints straight after a reboot. When I close the lid of a netbook for a while and then ...
6
votes
2answers
897 views

Is it possible for a daemon (i.e. background) process to look for key-presses from a USB keyboard?

I'm working on an embedded Linux project where I will be developing a program that will run automatically on bootup and interact with the user via a character display and some sort of button array. ...
2
votes
1answer
1k views

USB 3.0 Device not enumerated on USB 3.0 Port in Debian 6.0 OS

I have installed Debian 6.0 OS (Linux kernel 2.6.32 )to test my USB Application as well as Driver. My USB device is working fine on USB 2.0 Port without any issue. But when i tried to connect the ...
2
votes
0answers
239 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 ...
0
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0answers
73 views

Sudden USB 3 failure — fuse-exfat related?

I have an external hard drive (vfat) which I have had working repeatably with USB 3. I recently plugged another external drive (exfat) into the same port after installing fuse-exfat, and it continued ...
4
votes
2answers
133 views

Can I read/write from/to the USB device that does not enumerate any device in /dev?

I'm using a Texas Instruments MSP430F5529 Launchpad, but it is probably not important. This device upon connection enumerates 2 ACM devices: /dev/ttyACM0 and ttyACM1. Once upgrading firmware something ...
2
votes
1answer
423 views

Cannot stop autofs on FC19

I'd like to temporarily disable autofs on my fedora 19 x86 install. I would like to insert USB drives without them auto-mounting. Typing: service autofs stop Returns: Redirecting to ...
8
votes
2answers
6k views

How to disable USB autosuspend on kernel 3.7.10 or above?

I've updated my HTPC from kernel 3.7.10 to 3.10.7 and it seems CONFIG_USB_SUSPEND is now gone from the kernel options and included in PM. The main problem I'm facing is that I have an external HDD ...
1
vote
1answer
684 views

Installing Packages Offline On Linux Mint

Is it possible to create a linux software package on windows ,store it on a USB stick and then install it on a linux system which is not connected to the internet ? For example I would like to ...
3
votes
1answer
753 views

Updating Linux Mint Without Internet Access

I can't afford to have an internet connection at home. Is there any way of figuring out what update I need for my system so that I can download the same onto my USB stick from the office internet ...
4
votes
3answers
813 views

How to remove a USB drive without worrying if its been unmounted?

Sometimes I unplug my usb drive only to find out files were not written to it. I suppose the only way to ensure files are written to it is to right click on the USB drive on the desktop and then ...
0
votes
1answer
550 views

Cannot upen libusb shared object

I'm trying to use heimdall to install a custom Android ROM. When I run it, I get this: ./heimdall: error while loading shared libraries: libusb-1.0.so.0: cannot open shared object file: No such file ...
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2answers
601 views

How to remove a USB drive without worry if its been unmounted? [closed]

Sometimes I unplug my usb drive only to find out files were not written to it. I suppose the only way to ensure files are written to it is to right click on the USB drive on the desktop and then ...