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Questions tagged [usb]

Universal Serial Bus, an industry standard for serial communication.

The Universal Serial Bus is an industry standard for serial communication, defining:

  • connectors
  • protocols
  • cables

Originally developed to have a standard for connecting devices to computers.

More info on usb.org and wikipedia.

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External disk drive write performance decreases after some time. What could be the reason?

I have an external USB 3 "spinning rust" 2.5'' Harddisk. Serial number lookup at Western Digital reveals this is a model WDBYNN0010BBL, "WD My Passport (Ultra) Portable Storage, Blue". 1 TB = 931.48 GB, cheap and cheerful. No data sheet. WD…
David Tonhofer
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How to find out which device corresponds for /sys/bus/usb/devices/deviceN

I have a device connected to my Debian linux box, lsusb says: Bus 002 Device 005: ID 0525:a4a7 Netchip Technology, Inc. Linux-USB Serial Gadget (CDC ACM mode) In /sys/bus/usb/devices/ I have drwxr-xr-x 4 root root 0 Sep 7 14:27 .. lrwxrwxrwx 1…
LoFi
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If statements in udev rules

Is it possible to make statements in udev rules via if, else or case? I imagine something like: if [ $HOSTNAME == "host1" ] then ATTRS{idVendor}=="04a9", ATTRS{idProduct}=="", SUBSYSTEMS=="usb", MODE="0660", GOTO="local_usb_end" fi I did not…
Nico
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Is it possible to connect a laptop to a Linux desktop - to function as the desktop console?

I have some 30 Linux (RHEL/CentOS 7) desktops that operate as servers. Their only connections are power and NIC. Being desktops, most don't have serial ports. How can I go about using a Linux laptop to serve as their console? I'm thinking of…
boardrider
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Dell poweredge R640 disable USB 3.0 possible?

Everything is in the title. I want to install an old ESXI (5.5 version) on a DELL PowerEdge, but just after finishing the boot of ESXI every USB devices (Mouse + keyboard) seems to turn off and I can't even do the first step of the installation. I…
Couim
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Extremely slow writing to external USB disk

I have measured the transfer on the following disk to be 2.75MB/s: iManufacturer 2 Seagate iProduct 3 BUP Slim SL The interface is USB2 so it should be fastered than that: bcdUSB 2.10 I've done: hdparm -W1…
LetMeSOThat4U
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Use Smartcard Reader on Azure Remote Desktop

What I want to achieve: Plug a Smartcard Reader on my Laptop Connect to my private Azure VPN Use Remote Desktop to access a Server using User and Password, with Intelligent Card option and USBs checked. My Smartcard Reader appears on my device so…
Carbon
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Can't mount ntfs drive anymore ($VOLUME_INFORMATION attribute not found in $Volume)

I have a external hard drive with ntfs partition and it isn't accessible or mountable anymore. Last thing I did was a rsync copy to that usb drive. I still can see the ntfs partition with gnome-disks but I'm not able to mount it. With gparted and…
J. Doe
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Serial over USB during boot

I am currently trying to debug the boot sequence of Xen, and past a certain point, the only way to do it is over a serial connection. Now, on the laptop I'm using there exists no serial port nor an ExpressCard slot. It also does not support any…
Quantomic
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KVM Ubuntu USB Passtrough

I currently try to add a Hauppauge DVR Tuner (USB) to a KVM Machine. Both (Host and Guest) are running Ubuntu. This is my XML Guest File: https://pastebin.com/gBvFhsXs I already tried to follow this therad: Mapping USB drive direct to libvirt KVM…
user154501
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How to get usbmount to mount to a specific folder

I use Ubuntu server to run my Plex server. I’m wondering how I can get usbmount to mount my external hard drive to a specific folder. I have two partitions /dev/sdb1 and /dev/sdb2. I need sdb2 to mount to /media/usb0 without changing after reboot.…
djs115
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VMWare ESXi not recognizing usb keyboard on install

We are currently attempting to install VMWare ESXi 5.5 on a HPE proliant DL380 gen10 server. The beginning boot sequence appears that it is running fine, but when we get to the first menu option requiring input, it is not accepting any input from…
Nickkus
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Automatically add client USB drive to VMWare Linux virtual machine

I have this problem with adding USB devices to VMWare ESX host Linux VM in a client-level. I know how to add device to VM by connecting USB to host or using client device by using VSphere. But how can I automate that without touching the ESX…
Jon
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QEMU USB Passthrough Error: libusb_set_configuration: -99 [OTHER]

I'm trying to pass through a Spectrum Digital TMS320C6713 DSK to a Windows 2000 virtual machine, and when I connect it it appears in device manager, but whenever I try to actually use the device, it immediately detaches and I get this error: libusb:…
AJMansfield
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USB passthrough not working using virt-manager/qemu

I have created a virtual machine using virt-manager 1.3.2 and wanted to add a USB device. However, the USB device does not show up in the guest (Debian) when using lsusb. In another virtual machine that I created without virt-manager, USB…
Michael Kremser
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