Questions tagged [usb]

Universal Serial Bus, an industry standard for serial communication.

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libusb and gutenprint in Ubuntu Jammy

I have freshly installed Ubuntu Jammy with CUPS and printer-driver-gutenprint and am having problems with my USB printer. My printer is not recognised in CUPS. When I uninstall the printer-driver-...
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How to auto redirect a usb device on virt-manager

How do I automatically redirect a USB device to a remote KVM? preferrably filtered by ID. I have a KVM running on a server (QEMU+SSH), and the display protocol is Spice. How could I always redirect a ...
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"hdparm -s 1" on USB disk -> bricked? - USB drive is on power on in standby mode which cannot be reverted with hdparm

I have a disk which was apparently put into PUIS mode with hdparm. As the disk does not spin up on power on automatically, I think I need to send it directly to the USB device (which is not even ...
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Xen hypervisor: What does the acronym RMRR mean in "(XEN) [VT-D] It's risky to assign" ... "with shared RMRR at"? What are the risks?

I'm running Qubes-OS 4.1.0 While looking through the /var/log/xen/console/hypervisor.log I stumbled over the following messages: ... (XEN) [VT-D] It's risky to assign 0000:00:14.0 with shared RMRR at ...
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After USBGuard having blocked all USB devices including keyboard, is there any way to stop the service?

After USBGuard having blocked all USB devices including keyboard, is there any way to stop the service? Or will I need to reinstall the system as it is rendered unusable if it is not remotely ...
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New server installation receiving "usb usb2-port10: Cannot enable. Maybe the USB cable is bad?" every four seconds

I have a server system that I've had running for a couple of months - fresh install, Ubuntu 20.04 with all updates, and from day 1 it has had repeated messages, about every four seconds, that say, &...
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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 ...
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Sharing My USB Storage on remote desktop server

I have a server with public IP number running windows server 2019 . I can access this server via remote desktop through my personal computer. Is it possible to share my USB storage from my personal ...
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How to Diagnose Constant ZFS Repairs

I ran a zpool scrub 4 times on my pool today. Each time, it found and fixed errors. Bad drive, right? The pool has 2 drives, and smartctl reports zero Raw_Read_Error_Rate for each. So the drives say ...
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Split initrd into smaller files

I would like to know if it's possible to have a split initrd implementation. Our reason for doing this, is the fact that our Fedora based application uses a stripped version of Fedora underneath with ...
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Amazon Web Services To Serial Device

I'm contemplating moving an old windows server we have to AWS when the unit finally retires. One issue is that we have a truck scale that connects to the server via a serial (com3:) port. The current ...
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Connecting Huawei P10 Lite to Citrix and IGEL environment

this is my first post and I hope some of you can help me with my problem. I am an admin in medium sized building company, which is using Citrix XenApp and XenDesktop in combination with IGEL OS to ...
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Redirecting USB device to a virtual machine with virt-manager does not work

I have a Fedora workstation running an Ubuntu 16.04 virtual machine (KVM hypervisor). I'd like to redirect a USB device to the VM, but when selecting "Virtual Machine | Redirect USB device" ...
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USB networking setup between Android and embedded Linux

I'm working on a project right now where we have an embedded Linux system running some sensor/motor control functionality, and we're creating a GUI application to allow the user to control the system. ...
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Is there exist in a market some usb->ethernet->wifi combo dongle?

I have a USB-ended device which I want to connect to Enterprise Wireless network (EAP/TLS via FreeRadius). Is there any device in a market which can act as a WiFi client with EAP/TLS possibility? Now ...
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Remote access to `/dev/input` fails with permission error

I need to open a USB game controller device (joystick) remotely. This device is physically connected to server and is available for local user with permissions: crw-rw-r--+ 1 root input 13, 0 ** /dev/...
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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 ...
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What is the purpose of a xHCI controller while esxi6 doesn't support USB3?

When I add a virtual xHCI controller to my Linux VM on an esxi6 host, plug some USB3 device to a blue USB 3.0 SuperSpeed port on the server and connect this device to the VM, I get only USB2 speed. ...
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Unplugging power bank usb safely [closed]

I have a strange question, but please bear with me. Mostly I charge a power bank via usb in my laptop. When I want to unplug it, Windows does not show a "Safely remove hardware" option and ...
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USB 3.1 Gen II - if there are two attached Gen I devices, will it allocate 5Gbps to each?

Most USB PCIe add-on cards are single chipset and the ports share the available bandwidth. Theoretically, if I have two USB 3.1 Gen I devices that each can saturate the 5Gbps bandwidth, attaching them ...
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USB for keeping data safe

I'm used to consider that USB transfers are safe for data, that is USB does not add level of unreliability to data storage. However, I read that USB is not always a good choice for data transfer ...
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Read files from an encrypted disk?

Is it possible to read from an LUKS-encrypted disk via the terminal, e.g. by booting from a live Linux system on a USB flash drive and accessing the encrypted host computer's hard drive?
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Is exFAT filesystem a good choice for USB3 HDD connected to a home NAS server on Raspbian? [closed]

I have a home NAS on Raspberry PI4 with a USB3 HDD connected. I have a variety of devices with different OSs (Linux, Win and Mac), and I'd like to be able to access that HDD from any of those with a ...
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Autofs and udev rules to restrict usb permissions to groups

I need some help trying to figure out how to restrict the reading and writing access of usb devices. There are two groups on my system: usbreaders: only should have rights to access and read the usb ...
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Possible to run a G-Technology G-SPEED Q with only 1x hard drive installed?

I picked up an old G-Technology G-SPEED Q that had had all of it's internal drives removed. It previously held 4x 2TB hard drives that it could run RAID 0 or 5 accessible via USB 2.0, Firewire 800 and ...
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DD copy fails because output device path change during copy

I'm trying to copy an external USB hard drive to another using DD. my command: dd if=/dev/sdb of=/dev/sdc conv=noerror,notrunc iflag=noatime status=progress I'm using a live debian 10 distro. ...
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Dell R230, unable to boot from USB

I have a Dell R230. I'm trying to install FreeNAS 11.3 and use an USB stick as boot medium. I tried three different USB sticks (all of which work for booting on other computers): - Kingston DTSE9 G2 ...
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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 - ...
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Linux How can I find out if the server has USB2 or USB3

I have a server that I do not have documentation and I plan to buy a USB Storage Device that is USB3 and now I want to find out if the server has USB2 or USB3. I tried dmesg | grep usb [ 1....
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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 ...
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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 ...
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How can I fix my UPS repeatedly disconnecting and reconnecting?

I'm running a nut server connected to a Tripp Lite SMART1500LCD by USB. The device is behaving unexpectedly and I can see these kernel messages: user@host:~ $ dmesg -T [Wed Dec 4 13:24:24 2019] usb ...
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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 ...
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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 ...
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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", ...
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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 ...
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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 ...
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Is it possible to connect a laptop to a Linux desktop - to function as the desktop console? [closed]

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 ...
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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 ...
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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 ...
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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'...
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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'...
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Is it possible to check drives SMART attributes from a USB/eSATA enclosure?

I use USB external drives on a daily basis and I would like to be able to check on their integrity. I recently happened to discover I was unable to read SMART attributes from them. I wonder if there ...
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Assign static id to usb printer

I have three usb receipt printers from the same vendor (thus the same usb vendor and product id) plugged into the same server and I need to be able to issue separate printing commands to each of them. ...
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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: ...
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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 ...
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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 ...
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Looking for way to expose and extend 100s of USB connections from VM cluster(s)

We currently test a very large number of devices and we have one PC per 10 devices or so (we use two USB hubs per PC to break out to the devices). We have huge number of PCs and it's turning into a ...
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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 ...
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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. ...
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