Hello, i have just noticed, that i don't have composition enabled in my kwin x11 session. I don't remember, when this happened. I have new laptop for several months and i don't remember if composition worked on my old laptop. Both are with some intel intergrated gpu (sorry, don't know how to get details, my lspci says "Intel Corporation Raptor Lake-P [Iris Xe Graphics] (rev 04) ").
Old laptop was running Debian/Sid, new laptop is Debian/Trixie . I have copied my home directory from old laptop to new. In kwinrc, i have this [Compositing] Backend=OpenGL GLColorCorrection=false GLCore=true GLPlatformInterface=egl GLPreferBufferSwap=a GLTextureFilter=0 HiddenPreviews=5 LatencyPolicy=Low OpenGLIsUnsafe=false UnredirectFullscreen=false WindowsBlockCompositing=false XRenderSmoothScale=false and qdbus org.kde.KWin /KWin supportInformation says KWin Support Information: The following information should be used when requesting support on e.g. https://forum.kde.org. It provides information about the currently running instance, which options are used, what OpenGL driver and which effects are running. Please post the information provided underneath this introductory text to a paste bin service like https://paste.kde.org instead of pasting into support threads. ========================== Version ======= KWin version: 5.27.9 Qt Version: 5.15.10 Qt compile version: 5.15.10 XCB compile version: 1.15 Operation Mode: X11 only Build Options ============= KWIN_BUILD_DECORATIONS: yes KWIN_BUILD_TABBOX: yes KWIN_BUILD_ACTIVITIES: yes HAVE_X11_XCB: yes HAVE_EPOXY_GLX: yes X11 === Vendor: The X.Org Foundation Vendor Release: 12101009 Protocol Version/Revision: 11/0 SHAPE: yes; Version: 0x11 RANDR: yes; Version: 0x14 DAMAGE: yes; Version: 0x11 Composite: yes; Version: 0x4 RENDER: yes; Version: 0xb XFIXES: yes; Version: 0x50 SYNC: yes; Version: 0x31 GLX: yes; Version: 0x0 Decoration ========== Plugin: org.kde.kwin.aurorae Theme: __aurorae__svg__Materia-Dark Plugin recommends border size: No onAllDesktopsAvailable: true alphaChannelSupported: false closeOnDoubleClickOnMenu: false decorationButtonsLeft: 0, 2 decorationButtonsRight: 6, 3, 4, 5 borderSize: 2 gridUnit: 10 font: Linux Biolinum O,10,-1,5,50,0,0,0,0,0,Regular smallSpacing: 2 largeSpacing: 10 Output backend ============== Name: KWin::X11StandaloneBackend Cursor ====== themeName: Alkano-Aluminium themeSize: 24 Options ======= focusPolicy: 1 xwaylandCrashPolicy: xwaylandMaxCrashCount: 3 nextFocusPrefersMouse: false clickRaise: true autoRaise: false autoRaiseInterval: 750 delayFocusInterval: 300 shadeHover: false shadeHoverInterval: 250 separateScreenFocus: false activeMouseScreen: true placement: activationDesktopPolicy: 0 focusPolicyIsReasonable: true borderSnapZone: 10 windowSnapZone: 10 centerSnapZone: 0 snapOnlyWhenOverlapping: false rollOverDesktops: false focusStealingPreventionLevel: 1 operationTitlebarDblClick: 5009 operationMaxButtonLeftClick: 5000 operationMaxButtonMiddleClick: 5015 operationMaxButtonRightClick: 5014 commandActiveTitlebar1: 0 commandActiveTitlebar2: 28 commandActiveTitlebar3: 2 commandInactiveTitlebar1: 4 commandInactiveTitlebar2: 28 commandInactiveTitlebar3: 2 commandWindow1: 7 commandWindow2: 8 commandWindow3: 8 commandWindowWheel: 28 commandAll1: 10 commandAll2: 3 commandAll3: 14 keyCmdAllModKey: 16777250 condensedTitle: false electricBorderMaximize: true electricBorderTiling: true electricBorderCornerRatio: 0.25 borderlessMaximizedWindows: false killPingTimeout: 5000 hideUtilityWindowsForInactive: true compositingMode: 1 useCompositing: true hiddenPreviews: 1 glSmoothScale: 0 glStrictBinding: true glStrictBindingFollowsDriver: true glPreferBufferSwap: 97 glPlatformInterface: 2 windowsBlockCompositing: false latencyPolicy: renderTimeEstimator: allowTearing: true Screen Edges ============ desktopSwitching: false desktopSwitchingMovingClients: false cursorPushBackDistance: 1x1 timeThreshold: 150 reActivateThreshold: 350 actionTopLeft: 0 actionTop: 0 actionTopRight: 0 actionRight: 0 actionBottomRight: 0 actionBottom: 0 actionBottomLeft: 0 actionLeft: 0 Screens ======= Active screen follows mouse: yes Number of Screens: 2 Screen 0: --------- Name: DP-1 Enabled: 1 Geometry: 0,0,3440x1440 Scale: 1 Refresh Rate: 59972 Adaptive Sync: incapable Screen 1: --------- Name: eDP-1 Enabled: 1 Geometry: 842,1440,1920x1200 Scale: 1 Refresh Rate: 60003 Adaptive Sync: incapable Compositing =========== Compositing is not active Is there anything to do to enable compositing? Thanks, Libor