Linux Mint 27 'Adrien' brings Wayland to Cinnamon, new installer, annual release cycle

Linux Mint 27 'Adrien' represents a structural overhaul for the Ubuntu-based distribution, moving from six-month cycles with girls' names to annual releases numbered by year ahead and using boys' names. Built on Ubuntu 26.04 LTS with five-year support, it arrives this Christmas as the first stable release where Cinnamon's Wayland session is no longer experimental, achieving parity with X11 for window management, multi-monitor configurations, and NVIDIA GBM over EGL acceleration. The release also replaces the aging Ubiquity installer with the live installer already proven in Linux Mint Debian Edition, adds hibernation and hybrid sleep options after Ubuntu removed them, and introduces three new core applications: Superlight system monitor, Velocitty terminal, and Xepub reader.

Desktop refinements extend across Nemo file manager with a preview pane and filtered interactive search, a compositor-rendered screensaver replacing the separate cinnamon-screensaver process, and a redesigned Library for recent documents. System administration consolidates kernel management and user account settings, with kernel tracking by series and automated cleanup. These changes collectively modernize Mint's foundation while preserving its beginner-friendly orientation.

What changes in Cinnamon, Nemo, and system tooling

• Wayland session: Cinnamon's Wayland support exits experimental status with fixes for window mapping, focus stealing prevention, and crash resolution across Cinnamon, Muffin, cinnamon-session, and Xwayland; multi-monitor and KVM switch handling included.
• Graphics and scaling: Hardware acceleration covers GBM over EGL for NVIDIA cards; HiDPI scaling extends to cursors and Chromium-based applications including Slack and VS Code.
• Screensaver architecture: New compositor-rendered screensaver integrated into Cinnamon replaces standalone cinnamon-screensaver process, functioning on both Wayland and X11 with old implementation retained as one-release fallback.
• Installer migration: Ubiquity replaced by LMDE's live installer with OEM install support, BIOS and EFI handling, Secure Boot compatibility, and LVM plus LUKS disk encryption setup.
• Power management: Hibernation returns via new Sleep Modes page with hybrid sleep and suspend-then-hibernate options, still requiring large swap partition; kernel management relocates to System Administration with series-based tracking and automated cleanup.

Why it matters

For a distribution serving as many users' first Linux experience, production Wayland support in Cinnamon closes a long-standing gap with Fedora and Ubuntu while maintaining X11 compatibility for legacy workflows. The installer unification between Mint and LMDE reduces maintenance burden and modernizes disk encryption handling, and the return of hibernation addresses a practical regression that pushed users toward workarounds or alternative distributions.