Linux Mint 22 Post-Install Guide: 11 Essential Steps to a Perfect Setup

Linux Mint 22 ships with an updated Ubuntu LTS base, modern Linux kernel support, PipeWire as the default audio server, and the refined Cinnamon desktop. Out of the box, Mint is one of the most reliable desktop distributions available, but a few critical post-installation adjustments are needed to ensure maximum download speeds, hardware acceleration, and system recovery.

This guide walks through the essential steps to configure a fresh Linux Mint 22 installation for daily workstation and development use.

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1. Select the Fastest Local Mirrors

By default, Linux Mint connects to worldwide default mirrors. Switching to mirrors physically closer to your location significantly speeds up package downloads and system upgrades.

1. Open the application menu and launch Software Sources (or run pkexec mintsources in the terminal).
2. Under the Mirrors section, click on the Main (wilma) mirror. The tool will benchmark available servers; pick the one with the highest speed.
3. Next, click on the Base (noble) mirror and select the fastest nearby mirror.
4. When prompted, click OK to refresh your APT package cache.

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2. Update System Packages and Kernel

With the fastest mirrors active, perform a complete update to apply the latest security patches and bug fixes:

sudo apt update && sudo apt upgrade -y

If a new kernel or systemd update was pulled, reboot before continuing:

sudo reboot

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3. Set Up Timeshift System Snapshots

Linux Mint includes Timeshift by default. Setting up an initial snapshot now gives you a safe recovery point if a future configuration or driver update breaks your system.

1. Launch Timeshift from the application menu.
2. Select RSYNC as the snapshot type and click Next.
3. Select your target system drive.
4. Configure your schedule:
   • Daily: Keep 2 to 3 snapshots.
   • Boot: Keep 1 snapshot (optional, convenient for rollback on bad updates).
5. Important: Leave /root and /home excluded by default. Timeshift is meant for system files, not personal documents. Use tools like rclone, BorgBackup, or external drives for personal data.
6. Click Create to trigger your first baseline snapshot.

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4. Install Multimedia Codecs

If you did not check the “Install multimedia codecs” box during the OS installation, patent-restricted audio and video formats (such as H.264/H.265, AAC, and specific MP3 decoders) won’t play out of the box.

Install the meta-package via terminal:

sudo apt install -y mint-meta-codecs

To install Microsoft TrueType Core Fonts (Arial, Times New Roman, etc.):

sudo apt install -y ttf-mscorefonts-installer

Accept the EULA prompt using the Tab key and Enter.

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5. Install Hardware and NVIDIA Drivers

Linux Mint has one of the cleanest driver managers in the Linux ecosystem.

1. Open Driver Manager from the application menu.
2. Enter your password and allow it to scan your hardware.
3. If you are using an NVIDIA graphics card, select the latest recommended proprietary-tested driver branch (e.g., nvidia-driver-550 or newer).
4. For Wi-Fi adapters (such as Broadcom or Realtek chips), enable the recommended proprietary kernel module if listed.
5. Click Apply Changes and reboot when finished.

Verify that your NVIDIA driver is active:

nvidia-smi

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6. Configure Flatpak and Unconfined Application Settings

Linux Mint 22 integrates Flathub natively into the Software Manager. Starting in Mint 22, the Software Manager highlights unverified and unconfined Flatpaks for security transparency.

Update your Flatpak repository metadata:

flatpak update

To easily manage fine-grained Flatpak permissions (such as file system access and Wayland socket permissions) via a GUI, install Flatseal:

flatpak install flathub com.github.tchx84.Flatseal -y

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7. Enable the UFW Firewall

Linux Mint comes with the Uncomplicated Firewall (ufw) pre-installed, but it is disabled by default.

Enable it to block unauthorized incoming connections while allowing normal outbound traffic:

sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw enable

Check its operational status:

sudo ufw status verbose

If you prefer a GUI, search for Firewall Configuration (gufw) in the application menu.

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8. Optimize Laptop Battery and Power Management

If you are running Linux Mint 22 on a laptop, installing TLP or using power-profiles-daemon helps maximize battery life and reduce thermal throttling.

Option A — TLP (Recommended for maximum battery savings)

sudo apt install -y tlp tlp-rdw
sudo systemctl enable --now tlp

Check active battery state and throttling parameters:

sudo tlp-stat -s

Option B — Power Profiles Daemon (Best for GUI switching)

If you prefer toggling between Power Saver, Balanced, and Performance directly from the system tray:

sudo apt install -y power-profiles-daemon
sudo systemctl enable --now power-profiles-daemon

[!NOTE] Do not run both tlp and power-profiles-daemon simultaneously, as they will conflict. Choose one.

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9. Limit Systemd Journal Log Size and Clean APT

Over time, systemd log files can accumulate and take up gigabytes of disk space. Set a reasonable cap on the journal log size:

sudo journalctl --vacuum-size=100M

To make this persistent across reboots, edit the journal configuration:

sudo sed -i 's/#SystemMaxUse=/SystemMaxUse=100M/' /etc/systemd/journald.conf
sudo systemctl restart systemd-journald

Remove unused dependencies and purge residual configuration files left from older packages:

sudo apt autoremove --purge -y
sudo apt clean

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10. Essential Cinnamon Desktop Tweaks

Cinnamon 6 in Linux Mint 22 is clean, responsive, and highly customizable. Here are practical settings to tweak:

Enable Fractional Scaling (For High-DPI Displays)

1. Go to System Settings > Display.
2. Toggle on Fractional scaling.
3. Choose your preferred scaling factor (e.g., 125% or 150%).

Enable Redshift (Night Light)

1. Go to the application menu and search for Redshift.
2. Right-click the Redshift tray icon, select Autostart, and turn it on to reduce blue light strain during evening hours.

Configure Window Snapping and Hot Corners

1. Open System Settings > Window Tiling.
2. Ensure edge-snapping and fullscreen tiling shortcuts (Super + Arrow keys) are enabled to manage side-by-side multitasking smoothly.

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11. Install Essential Daily and Developer Tools

Finally, install a base suite of terminal and system administration utilities:

sudo apt install -y \
  build-essential \
  curl \
  wget \
  git \
  htop \
  btop \
  fastfetch \
  micro \
  vim \
  p7zip-full \
  unrar

Your Linux Mint 22 installation is now fast, secure, backed up by Timeshift, and ready for day-to-day productivity.