Soluții

Search engine keeps changing to Yahoo?

If your default browser homepage and search engine keep mysteriously changing to Yahoo!, your computer is probably infected with a browser hijacker. While resetting the browser might seem to fix the problem, here’s how to do the job properly.

A browser hijacker is probably one of the least aggressive and destructive types of malware, but that doesn’t mean you should allow it to exist on your computer. These things make unauthorized changes to your browser settings so that advertising or a similar page that’s beneficial to the malware distributor is shown instead of the one you chose.

Because the people who spread this type of virus are somehow benefiting from the change of your search engine or homepage, it’s unlikely that a hijacker will cause your computer to crash or become inoperable. It can, however, cause performance problems, and can also be a sign that your computer is infected with other malware.

In this case, the virus is probably the “search.yahoo.com redirect” virus. It will redirect you to the Yahoo homepage via an intermediate website as soon as you launch your browser. And if you click on any of the links on the Yahoo homepage, any revenue from those clicks will be paid to the intermediary website owner.

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Check who’s using your iPhone Hotspot Data

If you regularly share your iPhone’s data connection with your laptop or iPad, or let family members piggyback on your device’s data, you’ll be glad to learn that Apple recently made it a lot easier to keep tabs on who’s burning through your monthly allowance.

In a welcome change with the release of iOS 26.4, Apple has moved Personal Hotspot data usage info out of its previous hiding spot and put it in a much more convenient location.

Before the latest update, Personal Hotspot’s per-device breakdown was secreted away inside cellular settings, where it was easy to miss. Now it sits right inside the Personal Hotspot menu, making it way more practical for anyone on a capped data plan who’s keen to keep an eye on usage.

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Funcția UNIQUE nu funcționează în Excel

Dacă funcția UNIQUE nu funcționează în Microsoft Excel pe PC-ul Windows 11/10, citiți această postare pentru a afla cum să remediați problema. Funcția UNIQUE extrage o listă de valori distincte (neduplicate) dintr-un interval sau matrice și rezultatele “spills” în celulele învecinate. Cu alte cuvinte, vă ajută să eliminați duplicatele dintr-un set de date.
Cu toate acestea, uneori, nu reușește să elimine duplicatele în mod corespunzător sau aruncă o eroare. În unele cazuri, funcția nu se actualizează dinamic atunci când datele sursă se modifică, chiar dacă este de așteptat să facă acest lucru.

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Bara de volum in Windows 11 apare incontinuu

Când creștem sau micșorăm volumul pe Windows 11, apare o bară de volum. Bara rămâne acolo câteva secunde şi dispare când terminăm de reglat sunetul. Bara de volum nu apare aleatoriu în timp ce lucrați. Cu toate acestea, dacă bara de volum de pe Windows 11 continuă să apară singură, ar putea exista o problemă. Când apare, sunetul de pe computer crește sau scade brusc fără controlul tău. Poate fi o experiență frustrantă.

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Kubuntu installation guide

1. System Requirements

Minimum Requirements

Component Minimum
CPU Dual-core 64-bit
RAM 4 GB
Storage 25 GB
USB 8 GB installation media
GPU Integrated graphics supported

Recommended Requirements

Component Recommended
CPU Quad-core or better
RAM 8–16 GB
Storage SSD with 50+ GB free
GPU Modern Intel/AMD/NVIDIA

2. Downloading Kubuntu

Download the latest LTS release from:

Kubuntu Downloads

Recommended Version

Use the latest LTS (Long-Term Support) release unless you specifically need bleeding-edge packages.

Advantages of LTS:

  • More stable
  • Longer support cycle
  • Better driver compatibility
  • Recommended for workstations and beginners

3. Creating a Bootable USB

Windows Tools

Recommended:

Linux Tools

You can use:

  • dd
  • KDE ISO Image Writer
  • GNOME Disks
  • Ventoy

Using Rufus (Windows)

  1. Insert USB drive
  2. Open Rufus
  3. Select Kubuntu ISO
  4. Partition scheme:
    • UEFI systems → GPT
    • Legacy BIOS → MBR
  5. Click Start

4. BIOS/UEFI Configuration

Before installation:

Enter BIOS/UEFI

Common keys:

  • F2
  • DEL
  • F12
  • ESC

Recommended Settings

Enable:

  • UEFI boot mode
  • AHCI for SATA

Disable:

  • Fast Boot (temporarily)
  • Secure Boot (optional but helpful for NVIDIA)

Boot Priority

Set USB drive as first boot device.

5. Installing Kubuntu

Boot Into Live Environment

Select:

“Try or Install Kubuntu”

You can:

  • Test hardware first
  • Verify Wi-Fi/networking
  • Check display scaling

Start Installer

Double-click:

Install Kubuntu

Language & Keyboard

Choose:

  • Language
  • Keyboard layout
  • Time zone

Installation Type

Option A — Erase Disk

Best for dedicated Linux systems.

Option B — Dual Boot

Installs alongside Windows.

Option C — Manual Partitioning

Recommended for advanced users.

Recommended Partition Layout

Mount Point Size Filesystem
EFI 512 MB FAT32
/ 40–60 GB ext4
/home Remaining space ext4
swap 4–16 GB swap

User Configuration

Create:

  • Username
  • Password
  • Hostname

Recommended:

  • Enable automatic login only on trusted personal machines
  • Use strong passwords

Installation Process

The installer:

  • Copies system files
  • Installs bootloader
  • Detects operating systems
  • Configures locales

Typical installation time:

  • SSD: 10–20 minutes
  • HDD: 20–40 minutes

6. First Boot Configuration

After reboot:

Verify:

  • Internet connection
  • Display resolution
  • Audio
  • Bluetooth
  • Touchpad/keyboard

7. Updating the System

Open terminal (Ctrl + Alt + T):

sudo apt update
sudo apt full-upgrade -y

Then reboot:

sudo reboot

8. Open Driver Manager

Navigate:

System Settings → Driver Manager

NVIDIA Drivers

Recommended:

  • Proprietary NVIDIA drivers

Install via GUI or terminal:

sudo ubuntu-drivers autoinstall

Reboot afterward.

AMD Drivers

Modern AMD GPUs work well with open-source Mesa drivers already included.

Optional Mesa update:

sudo add-apt-repository ppa:kisak/kisak-mesa
sudo apt update
sudo apt upgrade

9. Essential Applications

Package Management

Kubuntu includes:

  • Discover GUI store
  • APT package manager

Recommended Software

Browsers

  • Firefox
  • Google Chrome
  • Brave

Communication

  • Discord
  • Telegram Desktop

Productivity

  • LibreOffice
  • OnlyOffice

Media

  • VLC media player
  • OBS Studio

Development

  • Visual Studio Code
  • Docker
  • Git

Install Common Packages

sudo apt install \
git curl wget htop neofetch \
build-essential vlc flatpak \
timeshift gufw

10. KDE Plasma Customization

System Settings

Main customization hub:

System Settings

Themes

Customize:

  • Global themes
  • Icons
  • Cursors
  • Fonts
  • Window decorations

Popular themes:

  • Breeze
  • Sweet
  • Fluent
  • Nordic

Widgets

Right-click desktop → Add Widgets

Useful widgets:

  • System monitor
  • Weather
  • Clipboard manager
  • Network speed monitor

Panels

You can:

  • Move taskbar
  • Add docks
  • Create macOS-style layouts
  • Add multiple panels

KDE Store

Install themes and widgets from:

KDE Store

11. Developer Environment Setup

Install Build Tools

sudo apt install build-essential cmake gcc g++

Git Configuration

git config --global user.name "Your Name"
git config --global user.email "you@example.com"

Install VS Code

Visual Studio Code Linux Download

Or:

sudo snap install code --classic

Install Docker

Docker Official Docs

Basic install:

sudo apt install docker.io
sudo systemctl enable docker
sudo systemctl start docker

Add user to docker group:

sudo usermod -aG docker $USER

Install Node.js

Recommended using NodeSource:

curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash -
sudo apt install nodejs

12. Gaming Setup

Install Steam

sudo apt install steam

Or:

Steam Official Site

Proton Compatibility

Enable:

  • Steam Play
  • Proton Experimental

This allows many Windows games to run on Linux.

Lutris

Useful for:

  • Battle.net
  • Epic Games
  • Wine management

Lutris

13. Security Hardening

Enable Firewall

sudo ufw enable

Check status:

sudo ufw status

Install Fail2Ban

sudo apt install fail2ban

Automatic Security Updates

sudo apt install unattended-upgrades
sudo dpkg-reconfigure unattended-upgrades

14. Backup Strategy

Timeshift

Excellent for:

  • System snapshots
  • Recovery after failed updates

Launch:

sudo timeshift-gtk

User File Backups

Recommended:

  • External SSD/HDD
  • NAS
  • Cloud storage

15. Performance Optimization

Reduce Swappiness

Check current value:

cat /proc/sys/vm/swappiness

Temporarily set:

sudo sysctl vm.swappiness=10

Permanent setting:

sudo nano /etc/sysctl.conf

Add:

vm.swappiness=10

Enable TRIM for SSDs

sudo systemctl enable fstrim.timer

Verify:

systemctl status fstrim.timer

Monitor Resources

Useful tools:

  • htop
  • KDE System Monitor
  • iotop
  • nvtop

16. Troubleshooting

Broken Packages

sudo apt --fix-broken install

Dependency Issues

sudo dpkg --configure -a

Bootloader Repair

Install Boot Repair:

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt update
sudo apt install boot-repair

Launch:

boot-repair

Network Restart

sudo systemctl restart NetworkManager

17. Useful Commands

System Information

neofetch

Disk Usage

df -h

Memory Usage

free -h

Running Processes

htop
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