[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #51 from Evan --- I will reopen https://bugs.kde.org/show_bug.cgi?id=465891 then which was marked as a dup of this bug -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Nate Graham changed: What|Removed |Added Status|REOPENED|RESOLVED Resolution|--- |FIXED --- Comment #50 from Nate Graham --- Those are around the cursor, which makes it a different issue with a different root cause. Can you submit a new bug report about it? Thanks! -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Evan changed: What|Removed |Added Resolution|FIXED |--- Status|RESOLVED|REOPENED Ever confirmed|0 |1 --- Comment #49 from Evan --- Upgraded to 5.27.7 and these square artifacts are still appearing with blur desktop effect enabled. The artifact has the color of the desktop wallpaper behind it. https://bugsfiles.kde.org/attachment.cgi?id=156344 Linux: Arch Linux KDE Plasma Version: 5.27.7 (wayland) KDE Frameworks Version: 5.108.0 Qt Version: 5.15.10 GPU: AMD 7900XTX (mesa-git 23.3) Display scaling: 150% -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #48 from Henning --- You were the person that digged into that right? Awesome work! As Debian will stay with 5.27 for the next like 3 years, its very important to fix this issue. One of the last things to make this version of Plasma stable. Plasma 6 will come to Debian in 2026 or so? -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Matthias Dahl changed: What|Removed |Added Version Fixed In|5.27.6 |5.27.7 -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Matthias Dahl changed: What|Removed |Added Resolution|--- |FIXED Status|REPORTED|RESOLVED --- Comment #47 from Matthias Dahl --- @Sebi: You're very welcome. And btw, I know exactly how you feel... been in the same situation quite a few times myself. :-) Thanks to David Edmundson, the fix has now been merged to the stable branch (5.27) and will be part of the next stable release. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Martin Polden changed: What|Removed |Added CC|mpol...@mpolden.no | -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #46 from sebi.l...@googlemail.com --- @Matthias: No problem, but thanks for the quick response. I could only test shortly yesterday, so it seems I was just lucky with the lines in some programs. Good to know that the fix isn't the problem, but just hasn't applied yet. I'm actually really happy about that, because I thought I had a different problem and now it gets most likely fixed in the future. Thanks again for your help! -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #45 from Matthias Dahl --- I'm very sorry but the fix has not been applied to the stable 5.27 branch yet, only master. (Plasma 6). I will ping the appropriate people right away. Sorry I haven't been paying closer attention to this lately. :-( -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 sebi.l...@googlemail.com changed: What|Removed |Added Resolution|FIXED |--- Ever confirmed|1 |0 Status|RESOLVED|REPORTED -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #44 from sebi.l...@googlemail.com --- I'm sorry to say this, but today I got Version 5.27.6 for my Fedora KDE and the lines are still there for me. Maybe I'm doing something wrong, but I still have them in several context menus. I think it is a better than before and I don't see them in the windows themself anymore, but only in menus. Also in some apps they seem to be gone completely, also in the dropdown menus (for example KDE Konsole), but in other apps (like Dolphin, KolourPaint, Gwenview etc.) the lines are still there. They are also really strong in the rightclick menu on the desktop. I mean it is not terrible, and maybe this is fixed with QT6 and Plasma 6 anyways? Then this is fine I think. But wanted to report it anyways, so in the future scaling isn't that bugged anymore. I'm using wayland with 150% fractional scaling. Thanks for all the awesome work on KDE Plasma! -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Nate Graham changed: What|Removed |Added Version Fixed In||5.27.6 Resolution|--- |FIXED Status|ASSIGNED|RESOLVED Latest Commit||https://invent.kde.org/plas ||ma/kwin/-/commit/56f6bab0c3 ||d9c7ef0d45efccc5913228c23c2 ||f58 --- Comment #43 from Nate Graham --- Should be fixed by the work in https://invent.kde.org/plasma/kwin/-/merge_requests/4080, thanks to Matthias Dahl! -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 enkht04+kde-b...@gmail.com changed: What|Removed |Added CC||enkht04+kde-b...@gmail.com -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #42 from Nate Graham --- The changes that caused the issue are known. But they were necessary to make fractional scaling work properly on Wayland with Qt 6, so we can't just revert them. We need to figure out a way to keep those changes but fix these glitch issues that they caused in Qt 5. One such attempt is in progress: https://invent.kde.org/plasma/kwin/-/merge_requests/4080. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #41 from JonnyRobbie --- One thing I don't understand - this seems like a regression. It was fine in 5.26, but appeared in 5.27. Now I know enough that asking "how hard could it be" is an unfortunate question, so I'll try to rephrase that: have we managed to bisect towards the offending commit that it would help us diagnose the issue and point towards a solution? -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Ilya Fedin changed: What|Removed |Added CC||fedin-ilja2...@ya.ru -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #40 from Matthias Dahl --- Thanks for looking into this-- very much appreciated! :-) Here you go: https://invent.kde.org/plasma/kwin/-/merge_requests/4080 -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #39 from Nate Graham --- Darn, I'm sorry that you didn't get a good response. Any chance you could post the code in the form of a merge request for KWin? I'm actually at a Plasma sprint right now and I'm sitting by a KWin developer, and I might be able to help get a conversation started. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #38 from Matthias Dahl --- I posted a (lengthy) comment on the 3236 merge request with my findings and suggestion, but after being ignored, I felt somewhat stupid/embarrassed, so I deleted it. The code itself was only a few lines that I never posted because it was just a PoC on my end. I wanted to get a discussion going if this would be a possible solution and where the best place would be, to extend the damage event and how, so I could have come up with a proper implementation that could have been merged eventually. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #37 from Nate Graham --- Matthias, did you submit that work for consideration anywhere? -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #36 from Matthias Dahl --- With the limited man power KWin has and this being a rather nasty problem (and not a priority), I wouldn't hold my breath for this to get fixed any time soon, I am afraid. I spent a few weeks trying to fix it, deep diving in kwin internals but at the end, I came to the conclusion that there is (imho) no way to make it work with all the floating point numbers and rounding. You have damage events in logical coordinates that are just one pixel in height... after scaling both coordinates and size, they have to perfectly fit where the damage is in device coordinates or you will end up with graphical glitches. That is extremely hard, if not impossible, to do right all the time. I shared my findings and tried to suggest a possible solution I called "fuzzy repaint". Basically you add a few pixel in each direction to the damage event to account for possible floating point/rounding errors. Even a very basic PoC on my end, fixed all glitches and worked fine. It would have required my work and thought to make it safe and sound, but it was better than what we have now and did not require a full repaint or anything else expensive. Unfortunately I was ignored (which is absolutely fine!), so I called it a day and moved on to different shores... :-( It's a pity really. On the surface, with KDE and KWin, you get pretty much everything you wished for with their handling of Wayland/Xwayland, scaling and HiDPI, but it has also has to work properly which is where it falls short. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #35 from sebi.l...@googlemail.com --- So my bug was also marked as a duplicate. I want to add that turning blur and background contrast doesn't change anything. I hope someone finds a solution to this, it's pretty bad having lines everywhere and without scaling I can't really read a word... Did someone find a workaround to this to make the lines disappear until this bug gets fixed? I would really appreciate it. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Nate Graham changed: What|Removed |Added CC||sebi.l...@googlemail.com --- Comment #34 from Nate Graham --- *** Bug 469187 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #33 from David Edmundson --- This can also be reproduced on with 100% scaling by using mouse mark on top -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 David Edmundson changed: What|Removed |Added CC||puspitaadak9...@gmail.com --- Comment #32 from David Edmundson --- *** Bug 464408 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 João Figueiredo changed: What|Removed |Added CC||jf.mun...@gmail.com -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #31 from Henning --- Still present in 5.27.4 -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Nate Graham changed: What|Removed |Added CC||amanita+kdeb...@mailbox.org --- Comment #30 from Nate Graham --- *** Bug 468734 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 postix changed: What|Removed |Added CC||pos...@posteo.eu -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #29 from JonnyRobbie --- Still present in 5.27.3 -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #28 from JonnyRobbie --- Can I ask what is the current status? Has it been reproduced by developers? Will it be fixed in .3? Is there something more we can do to help? -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 h...@live.com changed: What|Removed |Added CC||h...@live.com -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Nate Graham changed: What|Removed |Added Priority|HI |NOR -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Nate Graham changed: What|Removed |Added CC||bill.h...@slmail.me --- Comment #27 from Nate Graham --- *** Bug 466778 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 --- Comment #26 from Matthias Dahl --- Since my bug 466643 was marked a duplicate of this one, I will comment here. Though I am not entirely sure if this bug is the same bug I am experiencing. Here are some observations from my side: 1. I am seeing flickering blue lines (full and partial) between the items of menus. For example, if you right-click on the desktop, move your mouse around on the opening menu (also around the desktop itself), those flickering blue lines will be between the menu items. The flickering stops immediately when the mouse movement stops. Also, while using konsole and Midnight Commander, moving the "selection bar" up and down over files, will leave line artifacts as well. 2. This is with any scale fractional scale, integer scales are fine. 3. Desktop effects seemingly have no effect on this. I also don't have blur or background contrast active. 4. This happen with Breeze (Dark/Light) and Adwaita (Dark/Light) for example but disappears completely with Fusion which, otoh, seems somewhat slow/sluggish as a downside. 5. I tried https://invent.kde.org/plasma/kwin/-/merge_requests/3236 but it made no noticeable difference in my case (currently running with it). 6. I have seen this for quite some time now, probably since Nvidia introduced their GBM support. 7. I am running the latest git qt-5 branches for everything kde (Plasma, kwin, etc.) except normal applications. 8. Java applications using FlatLaf are apparently also completely fine. 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: 5.27.2 Qt Version: 5.15.8 Qt compile version: 5.15.8 XCB compile version: 1.15 Operation Mode: Xwayland 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: 12201008 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: Breeze Plugin recommends border size: None onAllDesktopsAvailable: true alphaChannelSupported: true closeOnDoubleClickOnMenu: false decorationButtonsLeft: 0, 2 decorationButtonsRight: 6, 3, 4, 5 borderSize: 0 gridUnit: 10 font: Noto Sans,10,-1,0,50,0,0,0,0,0 smallSpacing: 2 largeSpacing: 10 Output backend == Name: DRM Active: true Atomic Mode Setting on GPU 0: true Cursor == themeName: breeze_cursors themeSize: 36 Options === focusPolicy: 0 xwaylandCrashPolicy: xwaylandMaxCrashCount: 3 nextFocusPrefersMouse: false clickRaise: true autoRaise: false autoRaiseInterval: 0 delayFocusInterval: 0 shadeHover: false shadeHoverInterval: 250 separateScreenFocus: false activeMouseScreen: true placement: activationDesktopPolicy: 0 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: 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: 2 glStrictBinding: false glStrictBindingFollowsDriver: true glPreferBufferSwap: 99 glPlatformInterface: 2 windowsBlockCompositing: true latencyPolicy: renderTimeEstimator: allowTearing: true Screen Edges desktopSwitching: true desktopSwitchingMovingClients: true cursorPushBackDistance: 1x1 timeThreshold: 300 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: 1 Screen 0: - Name: HDMI-A-1 Enabled: 1 Geometry: 0,0,2560x1440 Scale: 1.5 Refresh Rate: 6 Adaptive Sync: incapable Compositing === Compositing is
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Bug Janitor Service changed: What|Removed |Added Priority|NOR |HI -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Nate Graham changed: What|Removed |Added CC||ua_bugz_kde@binary-island.e ||u --- Comment #25 from Nate Graham --- *** Bug 466643 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 465158] Line glitches with 125% and 150% scale on Wayland with either Blur or Background Contrast effects turned on
https://bugs.kde.org/show_bug.cgi?id=465158 Nate Graham changed: What|Removed |Added Summary|Line glitches with 125% and |Line glitches with 125% and |150% scale on Wayland with |150% scale on Wayland with |either Both Blur or |either Blur or Background |Background Contrast effects |Contrast effects turned on |turned on | -- You are receiving this mail because: You are watching all bug changes.
