encrypt the filesystem of non-encrypted drive with luks
I have a partition non-encrypted. It has files and is ext4. Is it possible to encrypt it? First it will require map to luks name. For that the cryptsetup command informs current ext4 will be erased....
View ArticleClik here to view.
My Ubuntu 22.04 experiences random slowdowns with no apparent cause
From time to time the computer starts to work very slowly. This happens suddenly and I could not identify a connection with other activities.Symptoms:Keyboard lag: After switching keyboard layouts,...
View ArticleClik here to view.
Suspend problem with Ubuntu 22.04
I recently installed Ubuntu 22.04.2 on my PC, and the system suspend doesn't seem to work. I've been browsing forums for answers, as this appears to be a common problem, but I can't find an obvious...
View ArticleWhat account needs to install libswscale5?
When I'm trying to install libswscale5, I get the following 401 error on my ubuntu (Ubuntu 22.04.4 LTS) host:# apt install libswscale5Reading package lists... DoneBuilding dependency tree......
View ArticleDocker ros1 Melodic evince frames.pdf error
I am using docker for accessing ROS1 on ROS2 ubuntu22.04 host PC, and I was working on a lidar sensor ydlidar - X4, and when I use the launch coderoslaunch ydlidar_ros_driver lidar_view.launch the X4...
View ArticleHow to get rid of Ubuntu Pro advertisement when updating apt?
Recently, whenever I run apt update/upgrade, I get the following message in the terminal:Try Ubuntu Pro beta with a free personal subscription on up to 5 machines.Learn more at...
View ArticleHow to (manually) write the path in Nautilus/Files when downloading a...
I am using Ubuntu 22.04 with desktop environment GNOME 42.9 and I find very handy to use Ctrl+l to (manually) write the path in Nautilus/Files to browse my file. However, If I want to download a file...
View ArticleClik here to view.
Ubuntu graphics lags 22.04
My screen becomes unresponsive once in several minutes, which makes the computer unusable, and buggy interfaces, e.g. the user interface is buggy.After several minutes of usage, the screen becomes...
View ArticleClik here to view.
My Ubuntu lock screen turns black, and many numbers constantly appear
I am beginner of Ubuntu. When I import new NVIDIA driver, I failed it.My GUI is broken, and my Ubuntu lock screen turns black, and many numbers constantly appear. It is shown in image1. Error code of...
View ArticleWhy has my USB flash drive's mounted name suddenly changed?
For a couple of years, my USB flash drive has mounted at "/media/$USER/1234-5678" where 1234-5678 is the device UUID. I have a backup script written which uses this mount point to run.Last week, my...
View ArticleUbuntu Account Lock Message
How to change the display message from "The account is locked due to 3 failed logins.(10 minutes left to unlock)" to “Login incorrect”
View ArticleWhen compiling kernel the "Ubuntu way", how do I add a local version modifier?
I've been experimenting with compiling my own kernel, and I'm having difficulty adding a local version modifier when following the instructions from BuildYourOwnKernel. This is the "Ubuntu way" of...
View ArticleUnable to pair AirPods Pro with Ubuntu 22.04
I tried to pair my new AirPods with a new Ubuntu 22.04 without luck.I keep seeing "Not Set Up".*The AirPods are able to pair with other devices.Tried editing the file /etc/bluetooth/main.conf and...
View ArticleBack-light keyboard's lights are not working after upgrading to Ubuntu 22.04
My backlight keyboard was working fine. I used to just use xset led on and the keyboard would just turn on its lights; however, after upgrading to 22.04. xset led on does not work anymore. I would be...
View ArticleDriver Issue with Intel® Wi-Fi 6E AX210 on Ubuntu 22.04.1 LTS -- reporting...
I run into a well-known problem that was actually already widely discussed on the web. However, I unfortunately could not solve the problem yet.I recently replaced the Wifi network adapter into a new...
View Article/dev/kvm does not exist in ubuntu 22.04
I have installed kvm using> sudo apt install qemu-kvmHowever, it selects other package insteadNote, selecting 'qemu-system-x86' instead of 'qemu-kvm'After installing, I check if /dev/kvm exists...
View ArticleEDAC pnd2: Failed to register device with error -22
I was using Ubuntu 20.04 which worked perfectly until I received the update notice, and now that I upgraded to Ubuntu 22.04, I cannot boot my pc properly as it displays a black screen with the...
View ArticleUSB drives visible but do not show up in file browser
I have a couple of SanDisk USB drive. I have a dual boot Ubuntu 22 / Windows 10 Lenovo laptop and these USB drives work as expected when booted in Windows, and they also work fine in my MacBook, so it...
View ArticleHelp on a specific command
I am installing Ros2 on my Ubuntu PC and want to make sure the installation steps won't affect my PC, in particular I need to know what this command actually do:echo "deb [arch=$(dpkg...
View ArticleUbuntu 22.04 rewriting user-dirs.dirs
I am using Ubuntu 22.04. After one update, the file ~/.config/user-dirs.dirs has changed the linesXDG_DESKTOP_DIR="$HOME/" XDG_PUBLICSHARE_DIR="$HOME/"So the folder Desktop and Public are missing and...
View Article