Since the upgrade to 5.22 kwin sometimes fails to correctly redraw application when switching desktop. It's hard to describe, but it looks like kwin tries to focus the new window under cursor, then fails. The window stays transparent and can not be focussed anymore. When closing the application a ghost of the application is left behind on all desktops. The only work-around is starting "kwin --repace &" STEPS TO REPRODUCE 1. Upgrade to 5.22 2. Switch desktop (glide) 3. Focus window OBSERVED RESULT The focussed application can not be activated. Closing it leaves a ghost. EXPECTED RESULT Focusing the application focusses the application, closing it doesn't leave a ghost. Operating System: Kubuntu 21.04 KDE Plasma Version: 5.22.0 KDE Frameworks Version: 5.82.0 Qt Version: 5.15.2 Kernel Version: 5.12.10 (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-10510U CPU @ 1.80GHz Memory: 31.2 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics
It turns out, I don't need to swith desktops to illicit the behaviour. Gaining focus seem to be the trigger when another window (filesave dialog e.g.) closes. These bugs seem related? https://bugs.kde.org/show_bug.cgi?id=416219 and less https://bugs.kde.org/show_bug.cgi?id=364647
Disabling and re-enabling the compositor (by short-cut keys) is also a very lightweight work-around for now. So I guess it's probably one of the effects that's rearing it's ugly head?
Since Plasma 5.22 i have this problem too, watching undocked videos in Firefox.
Disabling transluceny seems to fix the problem.
Can you please post the output of `qdbus org.kde.KWin /KWin supportInformation`?
$ qdbus org.kde.KWin /KWin supportInformation 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: 5.22.1 Qt Version: 5.15.2 Qt compile version: 5.15.2 XCB compile version: 1.14 Operation Mode: X11 only Build Options ============= KWIN_BUILD_DECORATIONS: yes KWIN_BUILD_TABBOX: yes KWIN_BUILD_ACTIVITIES: yes HAVE_DRM: yes HAVE_GBM: yes HAVE_EGL_STREAMS: yes HAVE_X11_XCB: yes HAVE_EPOXY_GLX: yes HAVE_WAYLAND_EGL: yes X11 === Vendor: The X.Org Foundation Vendor Release: 12011000 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: Plugin recommends border size: None Blur: 0 onAllDesktopsAvailable: true alphaChannelSupported: true closeOnDoubleClickOnMenu: false decorationButtonsLeft: 0 decorationButtonsRight: 3, 4, 5 borderSize: 0 gridUnit: 10 font: Ubuntu,10,-1,5,75,0,0,0,0,0,Bold smallSpacing: 2 largeSpacing: 10 Platform ========== Name: KWin::X11StandalonePlatform Cursor ====== themeName: breeze_cursors themeSize: 24 Options ======= focusPolicy: 1 xwaylandCrashPolicy: xwaylandMaxCrashCount: 3 nextFocusPrefersMouse: true clickRaise: true autoRaise: false autoRaiseInterval: 0 delayFocusInterval: 300 shadeHover: false shadeHoverInterval: 250 separateScreenFocus: false placement: 4 focusPolicyIsReasonable: true borderSnapZone: 10 windowSnapZone: 10 centerSnapZone: 0 snapOnlyWhenOverlapping: false rollOverDesktops: false focusStealingPreventionLevel: 2 operationTitlebarDblClick: 5000 operationMaxButtonLeftClick: 5000 operationMaxButtonMiddleClick: 5015 operationMaxButtonRightClick: 5014 commandActiveTitlebar1: 0 commandActiveTitlebar2: 0 commandActiveTitlebar3: 2 commandInactiveTitlebar1: 4 commandInactiveTitlebar2: 4 commandInactiveTitlebar3: 2 commandWindow1: 7 commandWindow2: 8 commandWindow3: 8 commandWindowWheel: 28 commandAll1: 10 commandAll2: 3 commandAll3: 14 keyCmdAllModKey: 16777250 showGeometryTip: false condensedTitle: false electricBorderMaximize: false electricBorderTiling: false electricBorderCornerRatio: 0.25 borderlessMaximizedWindows: false killPingTimeout: 5000 hideUtilityWindowsForInactive: true compositingMode: 1 useCompositing: true hiddenPreviews: 1 glSmoothScale: 1 xrenderSmoothScale: false glStrictBinding: true glStrictBindingFollowsDriver: true glCoreProfile: true glPreferBufferSwap: 101 glPlatformInterface: 1 windowsBlockCompositing: false latencyPolicy: renderTimeEstimator: Screen Edges ============ desktopSwitching: false desktopSwitchingMovingClients: true cursorPushBackDistance: 1x1 timeThreshold: 250 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: yes Number of Screens: 1 Screen 0: --------- Name: eDP-1 Geometry: 0,0,1920x1080 Scale: 1 Refresh Rate: 60.023 Compositing =========== Compositing is active Compositing Type: OpenGL OpenGL vendor string: Intel OpenGL renderer string: Mesa Intel(R) UHD Graphics (CML GT2) OpenGL version string: 4.6 (Compatibility Profile) Mesa 21.0.1 OpenGL platform interface: GLX OpenGL shading language version string: 4.60 Driver: Intel GPU class: Comet Lake OpenGL version: 4.6 GLSL version: 4.60 Mesa version: 21.0.1 X server version: 1.20.11 Linux kernel version: 5.12.12 Direct rendering: Requires strict binding: yes GLSL shaders: yes Texture NPOT support: yes Virtual Machine: no OpenGL 2 Shaders are used Loaded Effects: --------------- kwin4_effect_fullscreen kwin4_effect_sessionquit kwin4_effect_fadingpopups kwin4_effect_logout kwin4_effect_frozenapp kwin4_effect_morphingpopups kwin4_effect_login kwin4_effect_fade kwin4_effect_dialogparent slidingpopups slide screenshot magiclamp diminactive desktopgrid colorpicker wobblywindows presentwindows highlightwindow startupfeedback kscreen Currently Active Effects: ------------------------- diminactive Effect Settings: ---------------- kwin4_effect_fullscreen: pluginId: kwin4_effect_fullscreen isActiveFullScreenEffect: false kwin4_effect_sessionquit: pluginId: kwin4_effect_sessionquit isActiveFullScreenEffect: false kwin4_effect_fadingpopups: pluginId: kwin4_effect_fadingpopups isActiveFullScreenEffect: false kwin4_effect_logout: pluginId: kwin4_effect_logout isActiveFullScreenEffect: false kwin4_effect_frozenapp: pluginId: kwin4_effect_frozenapp isActiveFullScreenEffect: false kwin4_effect_morphingpopups: pluginId: kwin4_effect_morphingpopups isActiveFullScreenEffect: false kwin4_effect_login: pluginId: kwin4_effect_login isActiveFullScreenEffect: false kwin4_effect_fade: pluginId: kwin4_effect_fade isActiveFullScreenEffect: false kwin4_effect_dialogparent: pluginId: kwin4_effect_dialogparent isActiveFullScreenEffect: false slidingpopups: slideInDuration: 150 slideOutDuration: 250 slide: duration: 500 horizontalGap: 0 verticalGap: 0 slideDocks: false slideBackground: false screenshot: magiclamp: diminactive: dimStrength: 50 dimPanels: false dimDesktop: false dimKeepAbove: false dimByGroup: true dimFullScreen: true desktopgrid: zoomDuration: 300 border: 0 desktopNameAlignment: 0 layoutMode: 1 customLayoutRows: 2 usePresentWindows: false colorpicker: wobblywindows: stiffness: 0.15 drag: 0.8 moveFactor: 0.1 xTesselation: 20 yTesselation: 20 minVelocity: 0 maxVelocity: 1000 stopVelocity: 0.5 minAcceleration: 0 maxAcceleration: 1000 stopAcceleration: 0.5 moveWobble: true resizeWobble: true presentwindows: layoutMode: 1 showCaptions: true showIcons: true doNotCloseWindows: false ignoreMinimized: false accuracy: 20 fillGaps: true fadeDuration: 150 showPanel: true leftButtonWindow: 1 rightButtonWindow: 2 middleButtonWindow: 0 leftButtonDesktop: 2 middleButtonDesktop: 0 rightButtonDesktop: 0 highlightwindow: startupfeedback: type: 3 kscreen: Loaded Plugins: --------------- kwin5_plugin_krunner kwin5_plugin_nightcolor Available Plugins: ------------------ kwin5_plugin_colord kwin5_plugin_krunner kwin5_plugin_nightcolor
(In reply to Martin van Es from comment #4) > Disabling transluceny seems to fix the problem. Thanks for sharing this, what an annoying bug this is.
(In reply to alancio from comment #7) > (In reply to Martin van Es from comment #4) > > Disabling transluceny seems to fix the problem. > > Thanks for sharing this, what an annoying bug this is. We know that the translucency effect has caused problems in the past. Do you use the translucency effect with custom settings?
I'm not sure if I understand: When I enable Translucency, it has settings and I adjusted the two upper translucency values (Inactive and Moving windows) to be slightly less than max. Is that custom?
(In reply to Martin van Es from comment #9) > I'm not sure if I understand: When I enable Translucency, it has settings > and I adjusted the two upper translucency values (Inactive and Moving > windows) to be slightly less than max. Is that custom? Yes, they are. Anything that's not default can be considered "custom" :)
+1 On this with the latest KDE Manjaro - also more reports from the Manjaro community. I can confirm I have custom translucency settings as well (along with some Kvantum customisation) - just occasionally I can get it to happen just with the hamburger menu from an application rather than the application itself. I also note that when it happens my translucency settings appear to not be properly implemented, as in active windows can also be translucent, when they should not be. Another noticable effect when it gets particularly bad is that a closed window will re-appear after closing (after whatever effect has finished) but only in the background, and on all desktops. Also confirm that compositor reset fixes everything, but I am getting this happening 2-3 times a day.
Original report is with Intel video driver. Is it the same driver for the rest of the confirmed cases? Also, check if the modesetting module is used instead of intel. There is a similar report in Garuda forum. Archwiki has a similar troubleshooting https://wiki.archlinux.org/title/Intel_graphics#DRI3_issues , suggesting a drop to DRI2.
I am seeing this with Nvidia proprietary driver, as are others. I don’t think this is an Intel specific issue.
Reducing priority as it only affects people with custom settings for effect. :) Still, we should fix it.
I noticed defaults don't set a transparency for inactive windows. The odds of something going bad while (in)activating windows when using the desktop are MUCH higher then when only moving a window (the default) I'd say. At least for me. So I don't think it's the changed setting, it's the increase of transparency events, due to the changed setting, imho.
I'm seeing this bug too. I reset all the settings in the GUI (clicked "Defaults" then "Apply" in the desktop effects system settings) and then enabled wobbly windows. I didn't touch any other desktop effects settings. I'm still seeing the bug that Martin describes occasionally. I just had it happen with a firefox popup (for a noVNC session. I am experiencing the problem on my local computer, not the remote vnc computer, just to be clear). My system is Arch Linux and is up to date as of a day or two ago, though I started seeing the issue around a month ago, maybe 2... Here's the output of that "support information" command: https://pastebin.com/Rb7DaTPN
I just broke a window using default transparency setting, as predicted. It took a lot longer than with having inactive windows transparant, but it did happen eventually.
*** Bug 441379 has been marked as a duplicate of this bug. ***
*** Bug 440965 has been marked as a duplicate of this bug. ***
I've also been experiencing this issue with the default Translucency settings. Disabling the Translucency effect made my glitched window disappear. I've had this glitched window effect happen with at least Firefox, Chromium, Slack, and Dolphin (likely just because these are some of my highest use applications). It seems to happen every 1 to 2 days. I think it generally occurs when either dragging or maximizing (by dragging to the top of the screen) a window. Operating System: Arch KDE Plasma Version: 5.22.4-1 KDE Frameworks Version: 5.85.0-2 Qt Version: 5.15.2 Kernel Version: 5.13.13 (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-10510U CPU @ 1.80GHz Memory: 16 GiB RAM Graphics Processor: AMD Radeon RX 570 Graphics Driver: amdgpu $ qdbus org.kde.KWin /KWin supportInformation 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: 5.22.4 Qt Version: 5.15.2 Qt compile version: 5.15.2 XCB compile version: 1.14 Operation Mode: X11 only Build Options ============= KWIN_BUILD_DECORATIONS: yes KWIN_BUILD_TABBOX: yes KWIN_BUILD_ACTIVITIES: yes HAVE_DRM: yes HAVE_GBM: yes HAVE_EGL_STREAMS: yes HAVE_X11_XCB: yes HAVE_EPOXY_GLX: yes HAVE_WAYLAND_EGL: yes X11 === Vendor: The X.Org Foundation Vendor Release: 12013000 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: Plugin recommends border size: None Blur: 0 onAllDesktopsAvailable: true alphaChannelSupported: true closeOnDoubleClickOnMenu: false decorationButtonsLeft: 0 decorationButtonsRight: 3, 4, 5 borderSize: 3 gridUnit: 10 font: Noto Sans,10,-1,0,50,0,0,0,0,0 smallSpacing: 2 largeSpacing: 10 Platform ========== Name: KWin::X11StandalonePlatform Cursor ====== themeName: breeze_cursors themeSize: 24 Options ======= focusPolicy: 0 xwaylandCrashPolicy: xwaylandMaxCrashCount: 3 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 operationTitlebarDblClick: 5000 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: 28 commandAll2: 3 commandAll3: 14 keyCmdAllModKey: 16777251 showGeometryTip: false condensedTitle: false electricBorderMaximize: true electricBorderTiling: true electricBorderCornerRatio: 0.25 borderlessMaximizedWindows: false killPingTimeout: 5000 hideUtilityWindowsForInactive: true compositingMode: 1 useCompositing: true hiddenPreviews: 1 glSmoothScale: 2 xrenderSmoothScale: false glStrictBinding: true glStrictBindingFollowsDriver: true glCoreProfile: false glPreferBufferSwap: 101 glPlatformInterface: 1 windowsBlockCompositing: true latencyPolicy: renderTimeEstimator: 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: DVI-D-0 Geometry: 0,0,1920x1080 Scale: 1 Refresh Rate: 119.982 Screen 1: --------- Name: DisplayPort-2 Geometry: 1920,180,1600x900 Scale: 1 Refresh Rate: 59.978 Compositing =========== Compositing is active Compositing Type: OpenGL OpenGL vendor string: AMD OpenGL renderer string: Radeon RX 570 Series (POLARIS10, DRM 3.41.0, 5.13.13-zen1-1-zen, LLVM 12.0.1) OpenGL version string: 4.6 (Compatibility Profile) Mesa 21.2.1 OpenGL platform interface: GLX OpenGL shading language version string: 4.60 Driver: RadeonSI GPU class: Arctic Islands OpenGL version: 4.6 GLSL version: 4.60 Mesa version: 21.2.1 X server version: 1.20.13 Linux kernel version: 5.13.13 Direct rendering: Requires strict binding: yes GLSL shaders: yes Texture NPOT support: yes Virtual Machine: no OpenGL 2 Shaders are used Loaded Effects: --------------- kwin4_effect_translucency kwin4_effect_windowaperture kwin4_effect_squash kwin4_effect_sessionquit zoom kwin4_effect_morphingpopups kwin4_effect_maximize kwin4_effect_logout kwin4_effect_login kwin4_effect_fullscreen kwin4_effect_frozenapp kwin4_effect_fadingpopups kwin4_effect_fade kwin4_effect_dialogparent slidingpopups screenshot desktopgrid colorpicker presentwindows highlightwindow blur contrast startupfeedback screenedge kscreen Currently Active Effects: ------------------------- blur contrast Effect Settings: ---------------- kwin4_effect_translucency: pluginId: kwin4_effect_translucency isActiveFullScreenEffect: false kwin4_effect_windowaperture: pluginId: kwin4_effect_windowaperture isActiveFullScreenEffect: false kwin4_effect_squash: pluginId: kwin4_effect_squash isActiveFullScreenEffect: false kwin4_effect_sessionquit: pluginId: kwin4_effect_sessionquit isActiveFullScreenEffect: false zoom: zoomFactor: 1.2 mousePointer: 0 mouseTracking: 0 focusTrackingEnabled: false textCaretTrackingEnabled: false focusDelay: 350 moveFactor: 20 targetZoom: 1 kwin4_effect_morphingpopups: pluginId: kwin4_effect_morphingpopups isActiveFullScreenEffect: false kwin4_effect_maximize: pluginId: kwin4_effect_maximize isActiveFullScreenEffect: false kwin4_effect_logout: pluginId: kwin4_effect_logout isActiveFullScreenEffect: false kwin4_effect_login: pluginId: kwin4_effect_login isActiveFullScreenEffect: false kwin4_effect_fullscreen: pluginId: kwin4_effect_fullscreen isActiveFullScreenEffect: false kwin4_effect_frozenapp: pluginId: kwin4_effect_frozenapp isActiveFullScreenEffect: false kwin4_effect_fadingpopups: pluginId: kwin4_effect_fadingpopups isActiveFullScreenEffect: false kwin4_effect_fade: pluginId: kwin4_effect_fade isActiveFullScreenEffect: false kwin4_effect_dialogparent: pluginId: kwin4_effect_dialogparent isActiveFullScreenEffect: false slidingpopups: slideInDuration: 150 slideOutDuration: 250 screenshot: desktopgrid: zoomDuration: 300 border: 10 desktopNameAlignment: 0 layoutMode: 0 customLayoutRows: 2 usePresentWindows: true colorpicker: presentwindows: layoutMode: 0 showCaptions: true showIcons: true doNotCloseWindows: false ignoreMinimized: false accuracy: 20 fillGaps: true fadeDuration: 150 showPanel: true leftButtonWindow: 1 rightButtonWindow: 2 middleButtonWindow: 0 leftButtonDesktop: 2 middleButtonDesktop: 0 rightButtonDesktop: 0 highlightwindow: blur: contrast: startupfeedback: type: 1 screenedge: kscreen: Loaded Plugins: --------------- kwin5_plugin_krunner kwin5_plugin_nightcolor Available Plugins: ------------------ kwin5_plugin_colord kwin5_plugin_krunner kwin5_plugin_nightcolor
Correction, my CPU is actually: Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz
*** Bug 442111 has been marked as a duplicate of this bug. ***
Also, think I am seeing this bug on Arch. Attaching a screenshot of a Zoom meeting that got "burned" burned into my secondary monitor (blanked out the various people/names, of course). Also, note that in this instance it is only on my one virtual desktop it is stuck on. I have also in the past where it gets stuck on more than one virtual desktop (but always on either the primary or secondary monitors, not both). This one is also kind of odd - I have been out for a bit, and haven't used the laptop in over a week. The zoom meeting in question was not burned in this morning when I resumed it from sleep (that I can remember). Curiously, the meeting, based on participants, was from over a week ago so I have no idea how it is now just got stuck (unless maybe it was stuck on a different desktop and moved?). Also put this last part with a grain of salt as I am just getting over being rather sick, so perhaps my mind is playing tricks. Plasma 5.22.5 Frameworks 5.86.0 QT 5.15.2 X11 Nvidia 470.63.01 Note: Optimus laptop, so, using Intel as the primary driver and the official Nvidia binary support.
Created attachment 141529 [details] Ghost Image example of ghost image (that cannot be interacted with/closed/etc)
I have this problem as well under gentoo (KDE is unstable == latest available). It occurs quite a lot but mostly to own developed Qt apps during dev/test (pure Qt, no KDE) and a Gtk Eclipse RCP Java based Archi. I use activities and virtual desktops heavily in combination with 3 screens. I have a Radeon PRO WX 3100 card.
Vlad's patch (https://codereview.qt-project.org/c/qt/qtdeclarative/+/376014) has been merged, so this is officially fixed in Qt. We'll see about backporting the fix to the KDE patch collection for Qt 5.15 in https://invent.kde.org/qt/qt/qtdeclarative/-/merge_requests/8.
*** Bug 445261 has been marked as a duplicate of this bug. ***
I'm on libkf5plasma5 5.90.0-0ubuntu1~ubuntu21.10~ppa1 kwin-x11 4:5.23.5-0ubuntu1~ubuntu21.10~ppa1 libqt5qml5 5.15.2+dfsg-8 (from Kubuntu 21.10 + backports) and I still see this problem. Is this expected given these versions or did the mentioned Qt 5.15 merge fail to fix this bug?
(In reply to Martin van Es from comment #29) > and I still see this problem. Is this expected given these versions or did > the mentioned Qt 5.15 merge fail to fix this bug? I haven't seen similar bug reports. Are you sure that kubuntu ships qtdeclarative with the fix?
How would I know (for sure)? # dpkg -l | grep declarative ii libkf5declarative-data 5.90.0-0ubuntu1~ubuntu21.10~ppa1 all provides integration of QML and KDE frameworks ii libkf5declarative5:amd64 5.90.0-0ubuntu1~ubuntu21.10~ppa1 amd64 provides integration of QML and KDE frameworks
(In reply to Martin van Es from comment #31) > How would I know (for sure)? Sorry, I can't answer that question because I'm not familiar with packaging conventions in debian-based distros.
*** Bug 450997 has been marked as a duplicate of this bug. ***
Last weekend I made the early jump to kubuntu 22.04 and have enabled translucency again. I haven't seen the ghosting problem since, so it seems to be solved in 22.04.
I still see this problem on openKylin 1.0.1, and i checked the mentioned patch has been merge to the vendor's version of qtdeclarative.
Given that we have not received new bug reports, I'm inclined towards that it might be a distro problem. If you're pretty sure that the issue is still reproducible in Plasma 6.0, please open a new bug report and provide some reproducer.