KDE has officially released Plasma 6.7.3, a stable bugfix update that patches critical stability issues and quality-of-life improvements across the entire desktop stack. Key updates include the restoration of triple buffering for NVIDIA GPUs in KWin, a fix for screens failing to wake from DPMS sleep, and a resolution of a dangerous use-after-free vulnerability in the shared calendar event plugins. The release also addresses several desktop quirks, including corrected timezone offsets in the Digital Clock widget, improved brightness slider polling behavior, and refinements to the SDDM login manager and DrKonqi crash reporter.

KDE Plasma 6.7.3 Lands With NVIDIA Triple Buffering Restored and a Calendar Security Fix

The third point release in the 6.7 stable series drops a two-week patch window focused on stability, Wayland quirks, and a few quality-of-life tweaks.

KDE has officially shipped Plasma 6.7.3, landing Tuesday, July 14, 2026. It is a standard bugfix update, but it carries a few meaningful patches for people actually running NVIDIA GPUs or relying on the calendar plugins. The release manager, Bhushan Shah, signed off on 70-plus source packages that bundle a two-week contributor window into a single stable update.

KWin and Display Stack Overhauls

Plasma 6.7 itself dropped back on June 16, bringing per-screen virtual desktops, the Union theming engine, and that press-and-hold diacritics feature. Since then, developers have been quietly patching the cracks. This release bundles fixes across KWin, the desktop stack, and the login manager. Keep in mind that KDE still distributes these updates through distro repos rather than as a universal upgrade button, so your package manager dictates when you actually get it.

The window manager gets the heavy lifting here. NVIDIA users finally see triple buffering re-enabled in KWin’s DRM backend, which should smooth out rendering without the previous crash loops. DPMS wake issues also get patched. Screens that drop during power management now respond correctly to pointer input or laptop lid events. The Vulkan device check logic was cleaned up, EGL bindings are forced before context creation, and the amdgpu workaround was consistently applied across both pipeline match methods.

If you have been wrestling with color pipeline mismatches or tablet input dropping on off-screen quick views, those are resolved. The wl_fixes v2 protocol implementation also tightens Wayland compliance. Not every compositor quirk vanishes overnight, but the baseline stability gets a meaningful bump.

Desktop Fixes and System Tools

On the desktop side, there is a nasty use-after-free vulnerability in the shared calendar event plugins that has been patched. Digital Clock timezone offsets are finally rendering correctly, and the brightness slider now only talks to Upower while you are actually dragging it, cutting down on pointless hardware polling. Klipper’s configuration pages got spacing fixes, and Kicker’s runner list navigation was untangled.

SDDM gets a few critical overhauls, including proper handling of stale virtual terminal handlers and fixed exit code casting for crashed auth helpers. DrKonqi no longer tries to excavate non-existent coredump files or interfere with session management. KSysGuard’s path traversal guard and Intel helper crash fix round out the system monitoring tools. For anyone still on X11, the XDG background portal got disabled to stop related breakage, and URL versus filename routing in the app chooser was corrected.

Plasma Mobile’s quick settings flashlight finally shuts off, and Bigscreen app list scrolling gets a nudge to keep the selected item in view. The Breeze theme keeps refining rounded highlights and click effects, while the classic Oxygen theme gets closer to parity with light, dark, and twilight variants. Union theming pushes forward under the hood, styling QtQuick and QtWidgets apps with a single stylesheet.

It is worth noting that Plasma 6.7 and 6.7.3 are dedicated to Eric Laffoon, who passed away in May 2026. He spent decades contributing bug reports, advocacy, and support to the project. The community still misses him.

Head here for the official release announcement or track the full commit log.