Questions tagged [usb]

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

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USB-Stick not recognizable by fdisk -l

I have a USB-Stick, that does not get properly recognized. In lsusb I get the following entry: Bus 001 Device 015: ID ffff:1201 However in fdisk -l I don't see the stick as a option. Don't care ...
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How to disable a USB port

The cable connecting the webcam and my laptop seems to be broken. As a result, the webcam keeps connecting and disconnecting all the time. Is it possible to disable a USB port? A sample of the dmesg ...
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USB not reading with Pop OS (Linux distribution)

I was trying to download the Linux distribution Pop OS, but when I put it on the USB it said I needed to download the Kernal. Will you please tell me what this means? I've tried wiping the drive, but ...
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“/dev/hidg0” error in linux?

I'm trying to make my Raspberry Pi Zero W a USB device. I'm using this page to do so. When I try to run the main script (raspiducky.py), I get this error: /dev/hidg0: Cannot send after transport ...
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Alfa AWUS036nha external USB adapter doesn't work with Ubuntu 18.04

I am a budding Ubuntu user and unfortunately have been facing "WiFi adapter not found" for ages now on Ubuntu 18.04. Hence based on web research, I found that Atheros AR9271 USB driver works ...
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How can I prevent USB drivers (EHCI) from loading on specific USB controller (PCIe card)?

I'm using Debian 10.8 with Linux Kernel 4.19.0-14. I'm trying to use IOMMU to passthrough an entire USB controller (PCI Express card), but I'm having problems. The kernel is loading the ohci_pci and ...
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Why isn't the USB device being enumerated correctly after reset?

I have an embedded Linux device connected to a Sierra Wireless WP7610. The WP7610 has three USB serial ports which are enumerated as 0, 1 and 2. This is fine until the WP7610 resets, for instance by ...
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aplay lists the device, but pulseaudio thinks it's locked and won't detect it

I'm using Pop!_OS 20.10 and I have an intermittent problem that seems to happen reliably when I disconnect and reconnect my USB microphone "too often" or "too many times". I would ...
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Plugged USB stick into macbook and all data was wiped

I plugged a 32GB usb stick into a 2019 macbook pro and all data was automatically and immediately removed. OSX shows no data on the stick. There used to be data on the stick. I went back to my linux ...
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What is a good read and write speed for a USB to run Arch Linux smoothly?

How much read and write speed should a USB have to run Arch Linux (an actual installation to the USB not live) smoothly without lag?
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Getting a Toshiba 4610 Receipt Printer to work on Linux

I have a Toshiba receipt printer, model 4610-2CR (originally an IBM design), that I want to use from Linux. I have it connected over USB to a computer running Ubuntu 20.04. The output of dmesg shows ...
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Exclusive vs. non-exclusive USB devices for KVM

Why is it that some kind of USB devices (e.g. web camera) are exclusively assigned* to a KVM virtual machine, while others (e.g. mouse, keyboard) can be shared between host/VM/other VMs? *exclusively ...
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Why USB ports are not working on Linux mint 19.3?

I installed Linux mint on an old ASUS laptop. My problem is that USB mouse and USB keyboard are not working. I'm sure that the mouse is getting power because its light is working. I tried to lsusb but ...
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Map file system path of USB serial adapter to USB bus and device number

I have two identical USB serial adapters attached to a Raspberry Pi. One of them regularly crashes (no idea why, maybe a kernel bug – the hardware was already replaced) but it seems to work again ...
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Why does my USB modem produce multiple /dev/ttyUSB* files? In that, which one I have to select for AT commands?

Why does my USB modem produce multiple /dev/ttyUSB* files? In that, which one I have to select for AT commands? I'm using SIM7600 module in Linux system. This is my lsusb output.
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Writing ISO to USB in CentOS

I've written many ISO images to USB in the past. However, for some reason, I'm unable to complete this task on multiple machines running CentOS in my lab. The scenario is fairly simple. I have an ...
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Ubuntu Mac mini (2018) Macmini8,1: usb-c capped at 480 Mb/s

usb works on the two 5 Gb/s usb-a ports However, usb-c does not recognize devices set for a speed above 480 Mb/s When such devices are plugged in dmesg --human --follow outputs nothing The usb ...
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What's the best/easiest way to create a usb connection from Windows to Linux

I'm wondering what's the best way for me to setup a usb connection from Windows to a remote linux servers (Redhat)? I did some Googling and found socat but that was for Linux to Linux, any ideas? My ...
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Printer not detected but present on cups server

I have a Brother printer with following configuration: Description: Brother HL-L2360D series Location: localhost.localdomain Driver: Brother HL-L2360D for CUPS (grayscale, 2-sided printing) ...
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Unable to set USB gadget device class and protocol

I'm unable to successfully set the bDeviceClass, bDeviceProtocol, or bDeviceSubClass when configuring a device as an RNDIS gadget in /sys/kernel/config/usb_gadget/g1. I'm configuring the gadget with ...
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inserting and removing USB 3.x flash drive “fixes” USB 3.2 SSD speeds (was running at 2.0 speeds before)

I recently purchased a SanDisk 2TB Extreme PRO Portable SSD (model SDSSDE81-2t00). Upon plugging it into my Linux machine to perform a backup, I noticed it was running slowly. After some tests with dd ...
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Create serial connection for /dev/hiddev0 or /dev/hidraw0

I have a light projector which creates /dev/hiddev0 and /dev/hidraw0 connections when plugging in (USB+HDMI connection) I need it to be a serial connection, in order to control it. Is there any rule I ...
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How can I disable usb autosuspend for a given particular device or all usb

I am using on Fedora 32 a wireless usb mouse that get autosupended and that's driving me crazy. I looked online and tried many things without success. I identified the device using powertop Good ...
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Win 95 VirtualBox guest does not see USB

I am running VirtualBox 6.1 on Ubuntu 20.04. I have two virtual machines set up: Win 95 and Win 10. My windows 10 virtual machine is able to read the USBs I have connected to my host. However, Win ...
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How to make Virtualbox qt UI stop asking about USB Passthough every time I start it?

Every time I start it asks me in a dial log to "enable" or "disable" for USB Passthrough. The message also says that it will reappear after updates. The issue is I am on SUSE ...
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USB problems in dual booting Linux Mint and Windows 7

After I installed Mint from a live USB, I immediately ran into USB problems. First problem was that when I switched from linux to windows, my mouse and keyboard would get disabled and I would have to ...
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How to find which processes are started/utilized when USB drive inserted

I want to restrict the processes involved in handling removable storage via AppArmor on a Debian system. Which processes are used by Debian when a removable storage device (USB) is inserted? Which ...
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Can't visualize USB devices on QEMU

I have recently builded, with the help of buildroot, a kernel image that I'm emulating on QEMU, but I can't see my USB devices under /dev neither under /proc/bus/. How can I access them? My emulation ...
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File visible on Android device while copying via MTP, then disappears as soon as transfer completes…why?

Linux Mint 19.3 laptop copying a 400 MB file via MTP (in Caja) to an Android 7.0 tablet. While it's copying, the file is visible in the stock Files app on the tablet, and I can keep hitting the ...
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Debian on TI-Nspire

I am following this tutorial: https://ivoah.net/blog/2016/03/20/how-to-install-debian-on-a-ti-nspire/ (I have all of the required items.) I am using an Acer Chromebook C720, which I dual-booted Debian ...
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How do I enable the fast charge USB on my linux machine

I have an Asus G11CB tower PC running Pop OS 20.04 LTS and it has a USB port that supports fast charging (basically 5 watts charging without data transfer) but I need to enable it in the Asus Command ...
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Why does setxkbmap on a single device also change other devices?

I am running Ubuntu on a Thinkpad laptop with an external keyboard linked up. The laptop keyboard has a GB layout and the external has a US layout. First, I output a list of the connected devices (I'...
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USB driver crashes Linux kernel when receiving bigger amounts of data

I am using Linux ubuntu 5.4.0-1026-raspi. I am trying to write my own USB driver for my Cypress CY8CKIT-059 PSoC 5LP. The USB interface on the Cypress PSoC is configured to send any data it receives ...
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Different USB mouse device description in Windows and Linux

I have UVI Lust Mouse which am I writing custom platform independent configuration software for it using Qt, which is using HIDApi library. Now, in Windows, when I enumerate this device, I get 2 usage ...
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Focusrite Scarlett 2i2 only works on certain USB ports on Linux but works everywhere in Windows 10

My Focusrite Scarlett 2i2 audio interface works fine under Windows 10 on one of my USB ports but under Arch Linux it is not listed in the sound settings and reports the following error in dmsg: [ 187....
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Can't give access rights to libusb with udev rules

I'm trying to get OWPDK (a 1-wire library) to access an USB to 1-wire adapter (DS9490R, based on the DS2490 USB-to-1-wire bridge chip). This library uses libusb to enumerate devices (using ...
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What is the Mac OS X equivalent of extracting the device file for the recently plugged in USB memory stick from dmesg in Linux?

For more context: I have this command to put in a document showing how to write an ISO directly into the most recently plugged in USB memory stick in Linux: dd if=image.iso of=$(echo /dev/$(dmesg | ...
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Understanding the usb call stack

I am trying to understand how devices are communicating over USB in linux, specifically for mobile android devices, so I can connect a DIY project to my phone via USB. After doing some search, I only ...
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Ubuntu 20.04 upgrade killed automount of removable USB disk

When I built my DIY NAS running Ubuntu 18.04, upon connecting my external backup USB disk, it would automount to /databackup. /etc/fstab contains: UUID=c4001f83-8a1b-458d-b1f0-07ed6b481d26 /...
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Prevent bluetooth keyboard from sleeping

After a few minutes of inactivity (10mn?), my keyboard go to sleep. I have to press a key, then, wait 5 long seconds before I can use it again... First, some technical details : Linux Mint 20 ulyana -...
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Flash Drive Information Extractor (for linux)

Is there a program for Linux, similar to Flash Drive Information Extractor, to help visualize USB controllers?
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What are the “CUPS” credentials when trying to add a printer via CUPS web interface?

I've supposedly installed the driver for a printer I want to start using on my Linux system (never mind exactly how). Now, I visit http://localhost:631/ to access the CUPS interface. This works, but ...
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How to prevent WIFI dongle from turning off when switching OSes?

I'm using both Windows10 and Fedora on my system. Windows boots as the default OS and I have no problem with my WIFI dongle on windows. But when I want to use Fedora, I have to boot manually; when it ...
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My usb flash memory is not detected in linux, but is detected in windows

My removable USB flash memory is not detected in Linux. I test 2 systems: SUSE and Ubuntu. Of course it is listed by lsusb command but in fdisk or df it is not listed. It light on, but not detected. ...
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Cannot connect external monitor via USB-C (no Display Port listed in xrandr), Ubuntu 20.04

I'm trying to connect an external monitor using the USB-C port and an adapter on my Asus laptop, using Ubuntu. I know the setup (cable, adapter, monitor) are all working because I can connect it on a ...
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thunderbolt port not sending video

I have a razr stealth RZ0901952E72 running ubuntu20.04 5.4.0-58-generic. When using a macbook with usb-c ports I could run a philips 243V5L using a usbc-hdmi cable. I'd like to do the same with the ...
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Security when plugging a USB device into machine running GNU/Linux (Debian) [duplicate]

I’m wondering what kind of security measures may be in place or which I could enable in GNU/Linux (Debian specifically) to mitigate the risk of USB-based attacks. I understand that USB sticks which ...
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What causes “Power-on or device reset occurred” when plugging USB mass storage device

What causes "Power-on or device reset occurred" message on kernel log when plugging in an usb mass storage device? It seems to come from the SCSI subsystem, but the root cause isn't clear to ...
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How to setup wifi adapter on linux mint?

I am trying to setup my TP-Link Archer T4UH wireless Realtek 8812AU wifi usb adapter. I tried following the instructions on this blog. However, it still does not work. My network settings look like ...
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Astronomy Camera rapidly disconnects when used on Ubuntu

For the past while I've been trying to connect my Celestron Nightscape Camera to my Ubuntu system. This specific camera (with a KAI-10100 CCD) does not have a driver, but there is a similar model ...

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