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0 votes

Why is USB3 5Gbe network adapter half the speed as upload on ubuntu 20.04 server and limited to 800 Mbit/s download but 2Gbit/s upload on 5gig fiber?

The Raspberry PI is your limiting factor. The internal buss bottlenecks the USB. Pi's are great for many purposes, but not for high throughput networking,
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Boot delay of 30 seconds on kubuntu 22.10

Try systemd-analyze plot > plot.svg and open the svg file using firefox or something, take a look and see what is taking time. systemd-analyze blame will also show you how much each task took on ...
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Disable specific device from waking up the system

I know this is a bit old but I had issues with this too and other solutions did not work. I have found a much simpler solution to this problem and hope it helps. What uglic says about writing the ...
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1 vote

Cannot install or boot Ubuntu on an external SSD

Usually, recent versions of Ubuntu support recent harware much better than older versions of Ubuntu. If you need Ubuntu 20.04 to run a specific version of ROS, install it in a virtual machine running ...
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Unbootable problem with USB root hub (Ubuntu 20.04.05)

Most of the gory details are in my "question" above. I installed 22.04 - upgrading from 20.04.05 using terminal. It skips the Gnome install if you do that. I needed to manually install ...
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DELL Dock station WD19S not recognized on Ubuntu 22.04

These dockingstations do not use DisplayLink, but DisplayPort Alternate Mode over USB-C. And older laptops do not support that optional mode, even if they have USB-C connectors.
2 votes
Accepted

Can't boot from flash drive with custom .img

Boot from Flash Drive with Custom .img The guide that you linked to uses disk images not partition images. If you look at the first picture on that guide you will see the cursor is hovering above the ...
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Can't boot from flash drive with custom .img

You can try with the Ubuntu Server distributed as a compressed image file. When extracted to a drive, it is an installed system that can boot PC computers both in UEFI mode and BIOS mode. You can find ...
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0 votes

How to boot from a usb stick when using U-Boot

Ubuntu ARM will NOT work on a M1 Mac, because of the gigantic porting effort needed If you want to run Linux on your M1 Mac, there is the Asahi Linux, but this is still in alpha
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How to use usb.modeswtich to turn my 4G dongle from mass storage mode to modem mode?

Identify the mass storage mode that the modem is getting identified by the system using the lsusb command Bus 008 Device 019: ID 12d1:1f01 Huawei Technologies cdrom mass storage mode Add a new rule ...
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What is the disk-symbol in Disks

Disk is active = rotating, doesn't have parked reading heads. Or opposit, idk rn, as I didn't had rotating HDD for long time as I have only SSDs now, but yes, it's about sleeping/active state.
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1 vote

All USB drives give This Location Could Not Be Displayed after distro-upgrade and Aptik Restore

Well, I finally found a case near identical to mine, and the answer provided there also worked for me. The explanation for the problem after restoring a clone was I am pretty sure you did not clone ...
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3 votes

Erect the ultimate custom Ubuntu ISO

Creating a Custom Ubuntu System for Reproduction 1) Create Image file from existing operating system: Boot Live Ubuntu USB and insert Full install, (or Persistent), USB to be copied. Create an image ...
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1 vote

Erect the ultimate custom Ubuntu ISO

There are three ways, (that I know of, there might be more ways to this) to clone an installation (making an image of it). These are not the perfect way to clone a large drive. I'm using the 3rd ...
1 vote

Ubuntu 22.04.1 LTS installs to my USB instead of my hdd

The laptop I was working with has only one usb port, so I'd plugged in a multi-port device (and plugged a mouse, as well as my ISO flash drive, into that.) When the program instructed me to "...
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1 vote

Can't mount network drive properly over Wi-Fi

I had the same problem and I found a very good solution using automount with systemd. It is explained here : https://ppfeufer.de/linux-on-demand-nfs-and-samba-cifs-connections-with-systemd-automount/ ...
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0 votes

QEMU/KVM/Virt-Manager: Passthrough of USB Webcam to Windows 7 Enterprise creates "NEC USB HUB"

When using a USB redirector, devices such as a webcam, USB audio interface usually do not work correctly. Adding a webcam as a USB Host Device also won't help you. The only working solution I have ...
1 vote

is there a command to stop listening to a usb device?

You can unbind an USB. You need to know the USB digits for that. echo '{usbid}' |sudo tee /sys/bus/usb/drivers/usb/unbind where {usbid} consist of a bus and port for a specific USB. lsusb or lsusb -t ...
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Realtek 8812AU / 8821AU wireless driver for Ubuntu 20.10

I had exactly the same problem. The realtek driver 8821AU disappeared after an upgrade from 18.04 to 22.04. I followed the driver (re)installation steps in link below, Driver for 8821AU here The Wifi ...
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0 votes
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50% noise on USB Microphone

I don't know why, but the update to Kubuntu 22.10 removed this kind of behaviour. I am not even able to select pulseaudio as an option in more applications next to ALSA
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1 vote
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Amazon Fire tablet not accessible using ubuntu 20.04 issue

Had the same issue with inability to connect to Amazon Fire device. This worked for me: Avoid connecting device through a USB hub; connect directly to one of the USB ports on your *buntu system ...
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App permissions overriding usb symbolic link permissions

For the column meaning of ls check this post from SE Unix. You can use a group to filter users. However as long the application is run read-write permission, it will override the permissions. Better ...
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0 votes

ubuntu is detecting display (as a hardware) but not as display

In order for the dock to work as intended it is mandatory to use a USB 3.0 cable (which is capable of transmitting uncompressed video), as well as a USB 3.0 port. Make sure you comply with those ...
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0 votes

wipe usb drive - read only error

I agree with @ThomasWard -- with the cost of thumb drives today, it's not worth spending much time on it. If there was sensitive data on the drive, you might want to get a hammer or similar and ...
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0 votes

How do you reset a USB device from the command line?

Pure bash script for finding which USB device and driver provide a given network interface, and then resetting the device by unbinding and rebinding that driver: #!/usr/bin/env bash DEV=${1-eth1} ...
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How to exclude certain device from being grabbed by PulseAudio?

As it has been said, you need to install pavucontrol (Pulse Audio Control). Open pavucontrol, by selecting Super + "pulse audio". Go to Config tab. Select the profile "turned off&...
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1 vote
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Rasberry Pi 4B: Wifi adapter is detected in lsusb but not shows up as wlan1 (mt7612u)

according to @chili555 's help To solve the problem, just use sudo apt-get install linux-modules-extra-raspi to install the modules that contain drivers for the wifi adapter.
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Format usb linux Western Digital external disks

Here is the way (you must download sg3_utils package) dev=$(sg_scan |grep "My Book"|cut -d' ' -f 1) cfg=$(sg_raw -r 12 $dev 1a 00 20 00 0C 00 02 2>&1|cut -d " " -f 7-19) ...
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0 votes

I can't unmount a "ghost" pendrive

In my case system-udevd had crashed (and was using 100% CPU). Killing that fixed it.
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How to turn off the USB power to my mouse, when I suspend the notebook?

i ended up doing a slight edit to @WinEunuuchs2Unix's script case $1 in find_port) ZeroBUS=$(lsusb | grep $2 | cut -c 5-7 ) # Strip leading zeros BUS=$(echo $ZeroBUS | ...
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0 votes
Accepted

should rt2800usb module not be included on raspberry version?

As above, apt install linux-modules-extra-$(uname -r) should work, but will not survive an upgrade. Instead, install the linux-modules-extra-raspi meta-package, which will ensure that upgrades work ...
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Bootable USB doesn't show up on the start of Ubuntu 20.04

I had the same problem (removable USB not shown at boot). The solution was the priority order among SATA devices (the external USB may be allocated as SATA in the BIOS device list). Putting USB as ...
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Logitech wireless keyboard stops working after random intervals of time

My logitech wireless mouse and keyboard suddenly stopped working intermittently recently. I found removing and reinserting the unifying receiver would fix the problem, until it didn't. I installed ...
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USB Getting *Cannot enable. Maybe the USB cable is bad?* error with multiple devices, but only sometimes

Solution posted in https://askubuntu.com/a/833569/196546 for USB 3 drivers worked for me on Ubuntu 20.04. The directory structure looked slightly different. I had two different USB ids and I tried ...
-1 votes

Got a "Your installation CD-ROM couldn't be mounted" error message when trying to install Ubuntu from a bootable USB

Those who are using SSD for booting th OS, directly in your system, shut the system down, unplug the SSD and use a micro usb to usb A adapter for plugging it in externally and then do it, the problem ...
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No Wifi selection Ubuntu 22.04 on Broadcom 4360 (Macbook Air 2015)

(I am new to askubuntu so suggestions are welcome). I have a similar situation with my Ubuntu 22 not finding the Broadcom Wifi adapter on a 2014 Toshiba Satellite S70t-B. I did hard wire to my T-...
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sdb Attached SCSI disk. But I can't find it anywhere

I contacted the manufacturer and identified the problem with their support. The cable was designed only for small HDDs 2.5 inch. So my 3.5 inch WD's solid parts were probably too heavy. My HDD was ...
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0 votes

Brother printer dissapears from lsusb - force USB replug

Probably not compatible with USB suspend modes at all, and that's likely the only problem. lsusb and get the bus and device numbers of the printer, then: sudo echo "off" > /sys/bus/usb/...
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0 votes

Ubuntu 22.04 slow/laggy on external monitor via USB-C hub displayport 1.4

Edit: See updated description of the question. BIOS update fixed the issue only temporarily. Found the solution: BIOS update. I was running GQCN20WW (V1.06). After update to GQCN35WW (V1.21) ...
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Cannot connect Ethernet with an adapter through USB port

The 10/100 Realtek RTL8152 USB network card is already supported by Ubuntu 22.04 by default. No extra driver is required. Unfortunately some Realtek USB network cards have issues with USB power ...
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1 vote

How to find a device path in a udev program?

Udev: Pass the environment variable as: RUN+="/home/some/script/location/script.sh DEVNAME=$env{DEVNAME}" and in the script script.sh parse the $@ variable for the device name as: if [[ &...
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2 votes

WSL: how do I set the group for a tty device

Here is my recipe to enable permission modification of a USB device (RP2040 pico dev board via /dev/ttyACM0 or Wemos D1 mini on /dev/ttyUSB0) attached via usbipd on WSL (working at least with Ubuntu/...
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0 votes

1TB External USB Hard Drive format problems on Ubuntu 20.04

exFat works fine in Ubuntu, even though it's proprietary Windows file format. If your driver can't mount automatically after installing the right package (sudo apt install exfat-fuse exfat-utils) Go ...
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Bridge with netplan fails with a slow to come up interface

I'm not sure, but I think the issue is that hostapd does some magic to the interface which allows it to join bridges. I cannot move hostapd before networking, so I just added an one-shot systemd unit ...
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0 votes

How to install driver for D-Link DWA-181 AC1300 Wifi USB adaptor?

The official driver from D-Link mentioned in the question is here. However, the latest driver provided by DWA-181_REVA_DRIVERS_v5.8.7.1_LINUX won’t work with newer Linux kernel, you’ll encounter ...
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