[plasma/kwin/Plasma/6.7] src/scene: scene/windowitem: also set suspended state for dpms off

Git commit cef4f85b99d1f1e96e739e9a58c430f94a80a802 by Xaver Hugl.
Committed on 27/07/2026 at 11:43.
Pushed by zamundaaa into branch 'Plasma/6.7'.

scene/windowitem: also set suspended state for dpms off

Rendering with the screen off is usually just a big waste of power.

(cherry picked from commit bb3d6d12440180a0502fb124bec00e6f36d0b80b)

M  +3    -1    src/scene/windowitem.cpp

https://invent.kde.org/plasma/kwin/-/commit/cef4f85b99d1f1e96e739e9a58c430f94a80a802

diff --git a/src/scene/windowitem.cpp b/src/scene/windowitem.cpp
index e20c71cc6fd..a530063dbcb 100644
--- a/src/scene/windowitem.cpp
+++ b/src/scene/windowitem.cpp
@@ -53,6 +53,7 @@ WindowItem::WindowItem(Window *window, Item *parent)
     connect(waylandServer(), &WaylandServer::lockStateChanged, this, &WindowItem::updateVisibility);
     connect(workspace(), &Workspace::currentActivityChanged, this, &WindowItem::updateVisibility);
     connect(workspace(), &Workspace::currentDesktopChanged, this, &WindowItem::updateVisibility);
+    connect(workspace(), &Workspace::dpmsStateChanged, this, &WindowItem::updateVisibility);
     updateVisibility();
 
     connect(window, &Window::opacityChanged, this, &WindowItem::updateOpacity);
@@ -197,7 +198,8 @@ void WindowItem::updateVisibility()
     setVisible(visible);
 
     if (m_window->readyForPainting()) {
-        m_window->setSuspended(!visible && !m_window->isOffscreenRendering());
+        const bool dpmsOff = workspace()->dpmsState() != Workspace::DpmsState::On;
+        m_window->setSuspended((!visible || dpmsOff) && !m_window->isOffscreenRendering());
     }
 }