With scaling enabled (DrmOutputs, Scale=2) with single or multiple displays, the title bar for any window on the scaled display is not natively sharp. Looks like it was rendered for 1600x900 instead of 3200x1600 that I have. The windows themselves are sharp as expected - Dolphin, systemsettigs etc.
Same is actually happening for wallpaper. Instead of having sharp image of a 4K photo, I can clearly see that it's not HiDPI at all.
please provide the output of: qdbus org.kde.KWin /KWin supportInformation
Waiting for support information.
https://paste.kde.org/pbythjfdw/zwzag5
From paste: Version ======= KWin version: 5.11.4 Qt Version: 5.10.0 Qt compile version: 5.10.0 XCB compile version: 1.12 Operation Mode: Xwayland Build Options ============= KWIN_BUILD_DECORATIONS: yes KWIN_BUILD_TABBOX: yes KWIN_BUILD_ACTIVITIES: yes HAVE_INPUT: yes HAVE_DRM: yes HAVE_GBM: yes HAVE_X11_XCB: yes HAVE_EPOXY_GLX: yes HAVE_WAYLAND_EGL: yes X11 === Vendor: The X.Org Foundation Vendor Release: 11906000 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.breeze Theme: Blur: 0 onAllDesktopsAvailable: true alphaChannelSupported: true closeOnDoubleClickOnMenu: false decorationButtonsLeft: 5, 4, 3, 2 decorationButtonsRight: 6 borderSize: 0 gridUnit: 10 font: Noto Sans,10,-1,5,50,0,0,0,0,0,Regular smallSpacing: 2 largeSpacing: 10 Options ======= focusPolicy: 0 nextFocusPrefersMouse: false clickRaise: true autoRaise: false autoRaiseInterval: 0 delayFocusInterval: 0 shadeHover: false shadeHoverInterval: 250 separateScreenFocus: false placement: 4 focusPolicyIsReasonable: true borderSnapZone: 10 windowSnapZone: 10 centerSnapZone: 0 snapOnlyWhenOverlapping: false rollOverDesktops: false focusStealingPreventionLevel: 1 legacyFullscreenSupport: false operationTitlebarDblClick: 5000 operationMaxButtonLeftClick: 5000 operationMaxButtonMiddleClick: 5015 operationMaxButtonRightClick: 5014 commandActiveTitlebar1: 0 commandActiveTitlebar2: 30 commandActiveTitlebar3: 2 commandInactiveTitlebar1: 4 commandInactiveTitlebar2: 30 commandInactiveTitlebar3: 2 commandWindow1: 7 commandWindow2: 8 commandWindow3: 8 commandWindowWheel: 31 commandAll1: 10 commandAll2: 3 commandAll3: 14 keyCmdAllModKey: 16777251 showGeometryTip: false condensedTitle: false electricBorderMaximize: true electricBorderTiling: true electricBorderCornerRatio: 0.25 borderlessMaximizedWindows: false killPingTimeout: 5000 hideUtilityWindowsForInactive: true inactiveTabsSkipTaskbar: false autogroupSimilarWindows: false autogroupInForeground: true compositingMode: 1 useCompositing: true compositingInitialized: true hiddenPreviews: 1 glSmoothScale: 1 xrenderSmoothScale: true maxFpsInterval: 16666666 refreshRate: 0 vBlankTime: 6000000 glStrictBinding: false glStrictBindingFollowsDriver: true glCoreProfile: false glPreferBufferSwap: 112 glPlatformInterface: 2 windowsBlockCompositing: true Screen Edges ============ desktopSwitching: false desktopSwitchingMovingClients: true cursorPushBackDistance: 1x1 timeThreshold: 150 reActivateThreshold: 350 actionTopLeft: 0 actionTop: 0 actionTopRight: 0 actionRight: 0 actionBottomRight: 0 actionBottom: 0 actionBottomLeft: 0 actionLeft: 0 Screens ======= Multi-Head: no Active screen follows mouse: no Number of Screens: 1 Screen 0: --------- Name: RXN49LQ133Z eDP-1-unknown Geometry: 0,0,1600x900 Refresh Rate: 59.982 Compositing =========== Compositing is active Compositing Type: OpenGL OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 620 (Kaby Lake GT2) OpenGL version string: 3.0 Mesa 17.3.1 OpenGL platform interface: EGL OpenGL shading language version string: 1.30 Driver: Intel GPU class: Unknown OpenGL version: 3.0 GLSL version: 1.30 Mesa version: 17.3.1 Linux kernel version: 4.14.9 Direct rendering: Requires strict binding: no GLSL shaders: yes Texture NPOT support: yes Virtual Machine: no OpenGL 2 Shaders are used Painting blocks for vertical retrace: no Loaded Effects: --------------- kwin4_effect_fade kwin4_effect_scalein kwin4_effect_windowaperture kwin4_effect_logout kwin4_effect_translucency kwin4_effect_dialogparent kwin4_effect_morphingpopups kwin4_effect_frozenapp kwin4_effect_maximize slidingpopups slide screenshot minimizeanimation desktopgrid coverswitch colorpicker presentwindows highlightwindow blur startupfeedback screenedge kscreen Currently Active Effects: ------------------------- blur Effect Settings: ---------------- kwin4_effect_fade: kwin4_effect_scalein: kwin4_effect_windowaperture: kwin4_effect_logout: kwin4_effect_translucency: kwin4_effect_dialogparent: kwin4_effect_morphingpopups: kwin4_effect_frozenapp: kwin4_effect_maximize: slidingpopups: fadeInTime: 150 fadeOutTime: 250 slide: screenshot: minimizeanimation: desktopgrid: zoomDuration: 300 border: 5 desktopNameAlignment: 0 layoutMode: 1 customLayoutRows: 2 usePresentWindows: true coverswitch: animationDuration: 200 animateSwitch: true animateStart: true animateStop: true reflection: true windowTitle: false zPosition: 432 primaryTabBox: false secondaryTabBox: false colorpicker: presentwindows: layoutMode: 0 showCaptions: false showIcons: false doNotCloseWindows: true ignoreMinimized: false accuracy: 100 fillGaps: true fadeDuration: 150 showPanel: true leftButtonWindow: 1 rightButtonWindow: 4 middleButtonWindow: 0 leftButtonDesktop: 2 middleButtonDesktop: 0 rightButtonDesktop: 0 highlightwindow: blur: blurRadius: 14 cacheTexture: true startupfeedback: type: 1 screenedge: kscreen:
As it's breeze I thought we already fixed that and just found a similar bug which will be fixed with Plasma 5.12. Setting to duplicate. *** This bug has been marked as a duplicate of bug 384765 ***