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

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2
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2answers
85 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
0answers
55 views

Detach keyboard from the kernel

I am writing a remote controller app for an octocopter and want to use a keyboard as an input device for this app but I don't want it to have any effect outside this app. Somehow I would like to make ...
1
vote
1answer
173 views

udev GROUP and MODE assignments on symbolic link have no effect

I'm trying to connect my velleman k8055 board per usb to my pc. For this I have the udev rule SUBSYSTEM !="usb_device", ACTION !="add", GOTO="velleman_rules_end" ATTRS{idVendor}=="10cf", ...
1
vote
3answers
947 views

USB flash drive mounts and unmounts automatically

Whenever I plug my flash drive into the usb, a message like this window appears on the screen: Error mounting /dev/sdb1 at /media/sajjad/Linux Mint 16 Cinnamon 64-bit: Command-line `mount -t "ntfs" ...
2
votes
0answers
48 views

Driver not showing in /sys/bus tree

I'm trying to bind the "rt3572sta" to a USB device that previously had the "rt2800usb" driver bound to it. I ran this: $ sudo sh -c "echo [device-bus-id] > /sys/bus/usb/drivers/rt2800usb/unbind" ...
3
votes
0answers
515 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 ...
5
votes
1answer
216 views

Can I make a USB port on my Linux computer look like a mass storage device?

I'm running Kubuntu 12.04 on my PC. I want to make one USB port on my computer appear as if it is a USB mass storage device to other devices. In other words, something connected to this USB port will ...
3
votes
1answer
2k 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 ...
0
votes
0answers
94 views

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
votes
0answers
144 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. ...
1
vote
0answers
144 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
1k 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
663 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 ...
0
votes
1answer
66 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 ...
0
votes
1answer
264 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
1k 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
votes
1answer
32 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 ...
-1
votes
2answers
99 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
3k 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
310 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 ...
1
vote
1answer
180 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
3k 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
votes
1answer
241 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
votes
1answer
167 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
votes
1answer
565 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
votes
3answers
720 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 ...
1
vote
0answers
159 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
vote
2answers
89 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
158 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 ...
1
vote
0answers
1k 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 ...
1
vote
1answer
225 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). ...
1
vote
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 ...
1
vote
0answers
116 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
45 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
votes
1answer
212 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 ...
0
votes
1answer
64 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
2k 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 ...
1
vote
0answers
120 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 ...
1
vote
1answer
119 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 ...
3
votes
2answers
2k 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?
0
votes
2answers
98 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 ...
1
vote
0answers
131 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
votes
0answers
426 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 ...
0
votes
0answers
274 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
207 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 ...
7
votes
2answers
1k 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
2k 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 ...
3
votes
0answers
325 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 ...
4
votes
2answers
158 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
538 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 ...