I'm not sure what's special about vertical, but it's reproducible: - open a session with 2 displays: working fine - open the Displays kcm and change the layout to vertical: one screen gets b0rked - changing the setup again to horizontal works again
Created attachment 108521 [details] weston-info output
video showing what it looks like: https://www.youtube.com/watch?v=0FgVBEaW2GA
Please provide output of qdbus org.kde.KWin /KWin supportInformation For the broken setup
$ qdbus org.kde.KWin /KWin supportInformation KWin Support Information: The following information should be used when requesting support on e.g. http://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 http://paste.kde.org instead of pasting into support threads. ========================== Version ======= KWin version: 5.11.90 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: 11905000 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: 0, 9, 1 decorationButtonsRight: 3, 4, 5 borderSize: 0 gridUnit: 8 font: Noto Sans,8,-1,5,50,0,0,0,0,0,Regular smallSpacing: 2 largeSpacing: 8 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: true 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: false maxFpsInterval: 16666666 refreshRate: 0 vBlankTime: 6000000 glStrictBinding: false glStrictBindingFollowsDriver: true glCoreProfile: true glPreferBufferSwap: 101 glPlatformInterface: 2 windowsBlockCompositing: 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 ======= Multi-Head: no Active screen follows mouse: no Number of Screens: 2 Screen 0: --------- Name: LP125WH2-SLB LVDS-1-unknown Geometry: 554,1080,1366x768 Refresh Rate: 60.019 Screen 1: --------- Name: DEL DP-1-DELL U2312HM/59DJP1AHBFFL Geometry: 0,0,1920x1080 Refresh Rate: 60 Compositing =========== Compositing is active Compositing Type: OpenGL OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile OpenGL version string: 3.3 (Core Profile) Mesa 17.2.2 OpenGL platform interface: EGL OpenGL shading language version string: 3.30 Driver: Intel GPU class: SandyBridge OpenGL version: 3.3 GLSL version: 3.30 Mesa version: 17.2.2 Linux kernel version: 4.13.8 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: --------------- zoom kwin4_effect_frozenapp kwin4_effect_fade mouseclick kwin4_effect_maximize kwin4_effect_login kwin4_effect_morphingpopups kwin4_effect_windowaperture kwin4_effect_logout kwin4_effect_dialogparent kwin4_effect_translucency slidingpopups slide screenshot minimizeanimation flipswitch desktopgrid coverswitch colorpicker presentwindows highlightwindow blur contrast startupfeedback screenedge kscreen Currently Active Effects: ------------------------- blur contrast Effect Settings: ---------------- zoom: zoomFactor: 1.2 mousePointer: 0 mouseTracking: 0 enableFocusTracking: false followFocus: true focusDelay: 350 moveFactor: 20 targetZoom: 1 kwin4_effect_frozenapp: kwin4_effect_fade: mouseclick: color1: #ff0000 color2: #00ff00 color3: #0000ff lineWidth: 1 ringLife: 300 ringSize: 20 ringCount: 2 showText: false font: Noto Sans,8,-1,5,50,0,0,0,0,0,Regular enabled: false kwin4_effect_maximize: kwin4_effect_login: kwin4_effect_morphingpopups: kwin4_effect_windowaperture: kwin4_effect_logout: kwin4_effect_dialogparent: kwin4_effect_translucency: slidingpopups: fadeInTime: 30 fadeOutTime: 50 slide: screenshot: minimizeanimation: flipswitch: tabBox: false tabBoxAlternative: false duration: 40 angle: 30 xPosition: 0.33000001311302185 yPosition: 1 windowTitle: true desktopgrid: zoomDuration: 60 border: 10 desktopNameAlignment: 0 layoutMode: 0 customLayoutRows: 2 usePresentWindows: true coverswitch: animationDuration: 40 animateSwitch: true animateStart: true animateStop: true reflection: true windowTitle: true zPosition: 900 primaryTabBox: false secondaryTabBox: false colorpicker: presentwindows: layoutMode: 0 showCaptions: true showIcons: true doNotCloseWindows: false ignoreMinimized: false accuracy: 20 fillGaps: true fadeDuration: 30 showPanel: false leftButtonWindow: 1 rightButtonWindow: 2 middleButtonWindow: 0 leftButtonDesktop: 2 middleButtonDesktop: 0 rightButtonDesktop: 0 highlightwindow: blur: blurRadius: 12 cacheTexture: true contrast: startupfeedback: type: 1 screenedge: kscreen:
Now going back to the working set up I realized that if I align the screen at the bottom I get a similar issue, but if I do it at the top it works: i.e. in a horizontal set up if the y!=0 one of the displays it breaks.
Could you try to align the screens on the left (x==0)?
Yes, aligning both at x=0 works.
Wait no, it doesn't. I was just seeing garbage.
I have one more idea as I know a setting in blur effect is broken on multi screen: try disabling the blur and contrast effect.
No, it didn't work. I also tried disabling more effects, but also no changes. KWin Support Information: The following information should be used when requesting support on e.g. http://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 http://paste.kde.org instead of pasting into support threads. ========================== Version ======= KWin version: 5.11.90 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: 11905000 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: 0, 9, 1 decorationButtonsRight: 3, 4, 5 borderSize: 0 gridUnit: 8 font: Noto Sans,8,-1,5,50,0,0,0,0,0,Regular smallSpacing: 2 largeSpacing: 8 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: true 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: false maxFpsInterval: 16666666 refreshRate: 0 vBlankTime: 6000000 glStrictBinding: false glStrictBindingFollowsDriver: true glCoreProfile: true glPreferBufferSwap: 101 glPlatformInterface: 2 windowsBlockCompositing: 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 ======= Multi-Head: no Active screen follows mouse: no Number of Screens: 2 Screen 0: --------- Name: LP125WH2-SLB LVDS-1-unknown Geometry: 0,1080,1366x768 Refresh Rate: 60.019 Screen 1: --------- Name: DEL DP-1-DELL U2312HM/59DJP1AHBFFL Geometry: 0,0,1920x1080 Refresh Rate: 60 Compositing =========== Compositing is active Compositing Type: OpenGL OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile OpenGL version string: 3.3 (Core Profile) Mesa 17.2.2 OpenGL platform interface: EGL OpenGL shading language version string: 3.30 Driver: Intel GPU class: SandyBridge OpenGL version: 3.3 GLSL version: 3.30 Mesa version: 17.2.2 Linux kernel version: 4.13.8 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: --------------- zoom kwin4_effect_frozenapp mouseclick kwin4_effect_maximize kwin4_effect_login kwin4_effect_morphingpopups kwin4_effect_windowaperture kwin4_effect_logout kwin4_effect_dialogparent kwin4_effect_translucency slidingpopups slide screenshot minimizeanimation flipswitch desktopgrid coverswitch colorpicker presentwindows highlightwindow startupfeedback screenedge kscreen Currently Active Effects: ------------------------- Effect Settings: ---------------- zoom: zoomFactor: 1.2 mousePointer: 0 mouseTracking: 0 enableFocusTracking: false followFocus: true focusDelay: 350 moveFactor: 20 targetZoom: 1 kwin4_effect_frozenapp: mouseclick: color1: #ff0000 color2: #00ff00 color3: #0000ff lineWidth: 1 ringLife: 300 ringSize: 20 ringCount: 2 showText: false font: Noto Sans,8,-1,5,50,0,0,0,0,0,Regular enabled: false kwin4_effect_maximize: kwin4_effect_login: kwin4_effect_morphingpopups: kwin4_effect_windowaperture: kwin4_effect_logout: kwin4_effect_dialogparent: kwin4_effect_translucency: slidingpopups: fadeInTime: 30 fadeOutTime: 50 slide: screenshot: minimizeanimation: flipswitch: tabBox: false tabBoxAlternative: false duration: 40 angle: 30 xPosition: 0.33000001311302185 yPosition: 1 windowTitle: true desktopgrid: zoomDuration: 60 border: 10 desktopNameAlignment: 0 layoutMode: 0 customLayoutRows: 2 usePresentWindows: true coverswitch: animationDuration: 40 animateSwitch: true animateStart: true animateStop: true reflection: true windowTitle: true zPosition: 900 primaryTabBox: false secondaryTabBox: false colorpicker: presentwindows: layoutMode: 0 showCaptions: true showIcons: true doNotCloseWindows: false ignoreMinimized: false accuracy: 20 fillGaps: true fadeDuration: 30 showPanel: false leftButtonWindow: 1 rightButtonWindow: 2 middleButtonWindow: 0 leftButtonDesktop: 2 middleButtonDesktop: 0 rightButtonDesktop: 0 highlightwindow: startupfeedback: type: 1 screenedge: kscreen:
David just suggested me to try using KWIN_COMPOSE=Q. With this it works! Then it crashes after about 20s.
That Qpainter works doesn't surprise me. Overall it looks quite like incorrect view port handling.
Git commit 5d7e22e5dcf8981f9ba65088b81c1c6d456efef3 by David Edmundson. Committed on 25/10/2017 at 22:13. Pushed by davidedmundson into branch 'Plasma/5.11'. Fix viewport on vertically stacked monitors Summary: We want to translate by the monitor position, so that needs to be the negative of the position. But Kwin/KScreen treats 0 as the top of all monitors. GL treats 0 as bottom, so that all needs inverting. Hence this should be a positive y value for the viewport. Related: bug 385655 Test Plan: Had two monitors Side by side was - fine Stacked vertically - still fine Modded X code to extend in y instead of x. 3 monitors worked fine. Nested wayland only seems to support one screen? Reviewers: #plasma Subscribers: plasma-devel, kwin, #kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D8479 M +1 -1 plugins/platforms/drm/egl_gbm_backend.cpp M +1 -1 plugins/platforms/x11/windowed/egl_x11_backend.cpp https://commits.kde.org/kwin/5d7e22e5dcf8981f9ba65088b81c1c6d456efef3