Fitt's Law is not followed for the TopLeft Edge of the screen in my system, 1. add a top panel that contains an app launcher at its far left 2. disable all kwin effects for the topleft corner 3. clicking at the far left of the app launcher or at the far top there is no problem but if you click at the TopLeft corner the pop up is not appearing I noticed that if the user enables a kwin effect(action) then clicking at the top left corner activates the pop up BUT in such case I think this behavior works because the mouse is not able to reach that far inside the top left corner(probably a kwin protection? I cant be sure...) tip: exactly same behavior is observed also with Latte
I experience the same, I cannot click the top left pixel of the screen, no screen edge assigned.
please xprop and xwininfo the top left corner.
xprop ---- XdndAware(ATOM) = ATOM xwininfo ---- xwininfo: Window id: 0x2400019 (has no name) Absolute upper-left X: 0 Absolute upper-left Y: 0 Relative upper-left X: 0 Relative upper-left Y: 0 Width: 1 Height: 1 Depth: 0 Visual: 0x8b Visual Class: TrueColor Border width: 0 Class: InputOnly Colormap: 0x0 (not installed) Bit Gravity State: ForgetGravity Window Gravity State: NorthWestGravity Backing Store State: NotUseful Save Under State: no Map State: IsViewable Override Redirect State: yes Corners: +0+0 -2559+0 -2559-1439 +0-1439 -geometry 1x1+0+0
meh it misses the information which application it is. Can you please do in addition a: xwininfo -tree -root and check to which process the window belongs? If I check in my XWayland session I see lots of such window belonging to several applications. Looks like that is an often used position.
maybe also a xwininfo -all
How do I find out what process it belongs to? xwininfo -tree -root shows: xwininfo: Window id: 0xeb (the root window) (has no name) Root window id: 0xeb (the root window) (has no name) Parent window id: 0x0 (none) 98 children: [...] 0x3e00004 (has no name): () 1x1+0+0 +0+0 0x4000003 (has no name): () 3x3+0+0 +0+0 0x3e00003 (has no name): () 3x3+0+0 +0+0 0x2600004 (has no name): () 1x1+0+0 +0+0 0x3800003 (has no name): () 3x3+0+0 +0+0 0x1400003 (has no name): () 3x3+0+0 +0+0 0x2c00005 (has no name): () 1x1+0+0 +0+0 0x2c00004 (has no name): () 1x1+0+0 +0+0 0x3400002 (has no name): () 1x1+0+0 +0+0 0x1000004 (has no name): () 1x1+0+0 +0+0 0x3000004 (has no name): () 1x1+0+0 +0+0 0x2600003 (has no name): () 3x3+0+0 +0+0 0x3000003 (has no name): () 3x3+0+0 +0+0 0x2c00003 (has no name): () 3x3+0+0 +0+0 0x2200003 (has no name): () 3x3+0+0 +0+0 0x2800003 (has no name): () 3x3+0+0 +0+0 0x2000003 (has no name): () 3x3+0+0 +0+0 0x1a00004 (has no name): () 1x1+0+0 +0+0 0x1600004 (has no name): () 1x1+0+0 +0+0 0x1c00003 (has no name): () 3x3+0+0 +0+0 0x1a00003 (has no name): () 3x3+0+0 +0+0 0x1600003 (has no name): () 3x3+0+0 +0+0 0xe00001 (has no name): () 1x1+0+0 +0+0 0x1000003 (has no name): () 3x3+0+0 +0+0 0xc00003 (has no name): () 3x3+0+0 +0+0 0x200001 (has no name): () 10x10+-20+-20 +-20+-20 0x2600007 "KWin": () 1x1+0+0 +0+0 0x2600024 (has no name): () 1x1+0+0 +0+0 ← THAT was the window I clicked on 0x2600022 (has no name): () 1x1+0+1439 +0+1439 0x2600023 (has no name): () 74x74+0+1366 +0+1366 0x2600012 (has no name): () 1x1+2559+1439 +2559+1439 [...] It goes away when I quit kwin_x11 and when I restart it, a new window appears in xwininfo -tree -root with another ID but it's placed right below "KWin" in the output
xwininfo -all (note that I restarted kwin in the meantime so the winid is a different to my previous comment) xwininfo: Window id: 0x2600048 (has no name) Root window id: 0xeb (the root window) (has no name) Parent window id: 0xeb (the root window) (has no name) 0 children. Absolute upper-left X: 0 Absolute upper-left Y: 0 Relative upper-left X: 0 Relative upper-left Y: 0 Width: 1 Height: 1 Depth: 0 Visual: 0x21 Visual Class: TrueColor Border width: 0 Class: InputOnly Colormap: 0x0 (not installed) Bit Gravity State: ForgetGravity Window Gravity State: NorthWestGravity Backing Store State: NotUseful Save Under State: no Map State: IsViewable Override Redirect State: yes Corners: +0+0 -2559+0 -2559-1439 +0-1439 -geometry 1x1+0+0 Bit gravity: ForgetGravity Window gravity: NorthWestGravity Backing-store hint: NotUseful Backing-planes to be preserved: 0xffffffff Backing pixel: 0 Save-unders: No Someone wants these events: EnterWindow LeaveWindow PointerMotion Do not propagate these events: Override redirection?: Yes No window manager hints defined Window manager hints: Process id: (unknown) No normal window size hints defined No zoom window size hints defined No window shape defined No border shape defined
same outputs here and I can also confirm that I used: kquitapp plasmashell and killed also kwin_x11 the mentioned info appear only when kwin is running
Given what you two write it might be the screen edge window. But that one should be destroyed when no action references it.
I traced it back to PresentWindowsEffect::reconfigure() which does registerTouchBorder with EdgeTopLeft and that ends up creating an edge window. I have no idea why my kwinrc is littered with TouchBorderActivate=[some number] in various effects.
(In reply to Kai Uwe Broulik from comment #10) > I traced it back to PresentWindowsEffect::reconfigure() which does > registerTouchBorder with EdgeTopLeft and that ends up creating an edge > window. That sounds wrong. > > I have no idea why my kwinrc is littered with TouchBorderActivate=[some > number] in various effects. Nod, normal. It should be 9 which means none.
Possible patch at: https://phabricator.kde.org/D7508 I don't really understand how you ended up with an incorrect config. This should not be possible. My only explanation is that a version in master prior to 5.10 had a bug which could result in an incorrect config.
Git commit 981662a6b5e00a4fc01e264e79437a63344e5432 by Martin Flöser. Committed on 24/08/2017 at 11:38. Pushed by graesslin into branch 'master'. [effects] Don't register touch edges which don't exist Summary: Apparently some old configs made PresentWindows register the top left corner which does not make any sense as that's not supported by touch. So to be sure, don't register those edges. FIXED-IN: 5.11 Test Plan: Not tested, I'm on Wayland Reviewers: #kwin, #plasma Subscribers: plasma-devel, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D7508 M +4 -1 effects/cube/cube.cpp M +3 -0 effects/desktopgrid/desktopgrid.cpp M +4 -1 effects/presentwindows/presentwindows.cpp https://commits.kde.org/kwin/981662a6b5e00a4fc01e264e79437a63344e5432