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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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kvm and libvirt: hotplug virtual disk as USB storage

Observations (1) A new virtual disk can be hot plugged into a KVM/qemu VM as a qemu virtio device, e.g. see question KVM and Libvirt - How do I hotplug a new virtio disk?. However, this requires PCI hot-plugging support from the guest OS and this is…
Joachim Wagner
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Read data off Apple NGFF M2

I have one of those propietary NGFF M2 SSDs found in older Macbooks. I bought a converter which is supposed to convert it to a standard NVMe. When I plug it in my Linux box only sees it as a SCSI device. It doesn't show in lsblk and I can't dd…
Shawn Welch
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How do I prevent windows from detecting a USB GPS as a mouse?

When most NMEA-compliant GPS devices are connected to a windows machine via USB they appear as a COM port. Sometimes Windows (I've seen this on XP and Vista) detects that new serial device as a mouse and the cursor goes crazy. How do I tell Windows…
Joe Ludwig
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MMCLI on BusyBox returns "Cannot request manual scan of devices: unsupported' - IMEI

I have a USB modem plugged into a BusyBox v1.23.2 appliance. Typically I would be able to get the IMEI number using the MMCLI command set. However when this specific card (multiple of the same card - so this specific model) is used I get the output…
PHELMS
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Control lamp from FreeBSD

I have a webcam connected to a FreeBSD server that I want to collect and email an image on a schedule via a cron job. The room it is in may not always be lit. I am hoping to find some solution where a light can illuminate the subject just at the…
Jonathan Gilbert
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Disable usb mass storage on a per user basis

We are currently trying to implement a policy that dictates that some users may use usb mass storage devices and others may not. These users can use any device available in the company. Is there any way to implement this in linux (debian)? We have…
Mauricio Romanini
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usb stick "not authorized to perform"

Hello (sorry for my poor english). I have a fresh install of desktop clients linux mint 19.2 with a NIS authentication. Local users can plug usb-stick and it automount without problem. On the other hand, NIS users get this message: "Not authorized…
bxdfr
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Network adapter for HP ScanJet 8300

I have an HP Scanjet 8300 flatbed scanner, which comes with a USB connection. Now I would like to put it on my network rather than attached to a computer through USB, so I'm trying to find a suitable network adapter. HP sells one for other models…
CesarGon
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Mac OS X server - cannot add devices to MDM server

Mac OS X 10.14.4 - Server 5.8 I am trying to add devices to the server to manage them, the server is set up, the certificates as well, the Trust profile and the enrollment profiles are set, but when i try to Enroll a device - either macOS or iOS, I…
Davide Biasco
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Dell PERC6i raid 0 single drive or USB 3.0 external, which will be faster for backups

I have an older Dell R710 for my personal home server with a pair of PERC6i raid cards in it. I have a drive array attached to one of them where the data lives on different RAIDs, the other PERC6 is attached to the R710's 8 drive bays. I'm…
shorton
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Moving BitLocker startup key from flash memory to USB key?

I'm experimenting with setting up our company laptops with Win7 and BitLocker. There's no TPM available so I'm using the USB startup key option. In my testing I put the encryption key on a MemoryStick flash card and it's working fine. To test test…
Scott Bussinger
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X-Org Server - Identify USB Unplug event

In our X-Org server setup, if the server is running and we unplug the USB Mouse then the server doesn't really do anything (no errors or warnings.) If we replug the device, even then the server doesn't recognize that device is there now, since it…
Beenish Khan
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Cannot execute certain commands on SATA3 3.5" external USB disk

I mount a SATA3 3.5" disk with a USB to Sata3 cable. When I connect the disk, my CentOS7 recognize it: $ dmesg -T | grep USB ... [Mon Nov 5 14:38:36 2018] usb 2-5: new SuperSpeed USB device number 3 using xhci_hcd [Mon Nov 5 14:38:37 2018] usb…
boardrider
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Strange USB device connection messages on /var/log/messages on Centos 7.5

I am seeing some strange USB device connect and disconnect messages in a dedicated server running CentOS 7.5. These messages appear almost every day, but they do not appear at the same time every day. The time of the messages is random. I have…
Esteban
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Keep keyboard alive when x server crashes

From time to time my Ubuntu desktop freezes. When this happens my usb keyboard and mouse stop responding so I can't get out to tty1 [ctrl][alt][f1] or do anything else from my input devices - also the lights on the kb & mouse go out suggesting that…
LRE
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