Some of my KDE sessions are unable to display window miniatures of opened windows in the task manager (even if I disable/reenable effects). Others sessions works as expected and miniatures are displayed. Sometime a logoff/login solves the problem. I don't know which logs I should add to this bug report. I'm running ArchLinux with latest updates. My computer is a Phenom II X4 with an NVIDIA GTX 560 (I'm using proprietary drivers). Reproducible: Sometimes
in case you are looking for user support you want to check http://forum.kde.org
That might just as well be https://git.reviewboard.kde.org/r/107983/
Hi there, Got the bug again. I ran the selectionwatcher testcase from the commit and I got only Compositing Activated/Deactivated. I never got the "Compositing changed, is now" message. I don't know which cases it should trigger this signal. The .xsession-errors print the following when I hover the mouse over the icon to generate window miniature/thumbnail X Error: BadValue (integer parameter out of range for operation) 2 Major opcode: 53 (X_CreatePixmap) Resource id: 0x0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 14 (X_GetGeometry) Resource id: 0x22002f1 X Error: BadWindow (invalid Window parameter) 3 Major opcode: 3 (X_GetWindowAttributes) Resource id: 0xf92f16f0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Extension: 139 (RENDER) Minor opcode: 4 (RenderCreatePicture) Resource id: 0x22002f1 X Error: RenderBadPicture (invalid Picture parameter) 143 Extension: 139 (RENDER) Minor opcode: 7 (RenderFreePicture) Resource id: 0x22002f1 X Error: BadValue (integer parameter out of range for operation) 2 Major opcode: 53 (X_CreatePixmap) Resource id: 0x0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 14 (X_GetGeometry) Resource id: 0x22002f3 X Error: BadWindow (invalid Window parameter) 3 Major opcode: 3 (X_GetWindowAttributes) Resource id: 0xf92f16f0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Extension: 139 (RENDER) Minor opcode: 4 (RenderCreatePicture) Resource id: 0x22002f3 X Error: RenderBadPicture (invalid Picture parameter) 143 Extension: 139 (RENDER) Minor opcode: 7 (RenderFreePicture) Resource id: 0x22002f3 X Error: BadValue (integer parameter out of range for operation) 2 Major opcode: 53 (X_CreatePixmap) Resource id: 0x0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 14 (X_GetGeometry) Resource id: 0x22002f5 X Error: BadWindow (invalid Window parameter) 3 Major opcode: 3 (X_GetWindowAttributes) Resource id: 0xf92f16f0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Extension: 139 (RENDER) Minor opcode: 4 (RenderCreatePicture) Resource id: 0x22002f5 X Error: RenderBadPicture (invalid Picture parameter) 143 Extension: 139 (RENDER) Minor opcode: 7 (RenderFreePicture) Resource id: 0x22002f5 X Error: BadValue (integer parameter out of range for operation) 2 Major opcode: 53 (X_CreatePixmap) Resource id: 0x0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 14 (X_GetGeometry) Resource id: 0x22002f7 X Error: BadWindow (invalid Window parameter) 3 Major opcode: 3 (X_GetWindowAttributes) Resource id: 0xf92f16f0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Extension: 139 (RENDER) Minor opcode: 4 (RenderCreatePicture) Resource id: 0x22002f7 X Error: RenderBadPicture (invalid Picture parameter) 143 Extension: 139 (RENDER) Minor opcode: 7 (RenderFreePicture) Resource id: 0x22002f7 X Error: BadValue (integer parameter out of range for operation) 2 Major opcode: 53 (X_CreatePixmap) Resource id: 0x0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 14 (X_GetGeometry) Resource id: 0x22002f9 X Error: BadWindow (invalid Window parameter) 3 Major opcode: 3 (X_GetWindowAttributes) Resource id: 0xf92f16f0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Extension: 139 (RENDER) Minor opcode: 4 (RenderCreatePicture) Resource id: 0x22002f9 X Error: RenderBadPicture (invalid Picture parameter) 143 Extension: 139 (RENDER) Minor opcode: 7 (RenderFreePicture) Resource id: 0x22002f9 X Error: BadValue (integer parameter out of range for operation) 2 Major opcode: 53 (X_CreatePixmap) Resource id: 0x0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 14 (X_GetGeometry) Resource id: 0x22002fb X Error: BadWindow (invalid Window parameter) 3 Major opcode: 3 (X_GetWindowAttributes) Resource id: 0xf92f16f0 X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Extension: 139 (RENDER) Minor opcode: 4 (RenderCreatePicture) Resource id: 0x22002fb X Error: RenderBadPicture (invalid Picture parameter) 143 Extension: 139 (RENDER) Minor opcode: 7 (RenderFreePicture) Resource id: 0x22002fb
I ran the kwin --sync --replace and got this http://pastebin.com/0m2JB2sh
Created attachment 78946 [details] No miniatures shown on taskbar Attached a picture showing the problem. Notice that I'm with effects enabled.
test is very simple: ensure compositing is active, then "kquitapp plasma-desktop; sleep 3; plasma-desktop" if the thumbnails show up again: welcome to the selectionwatcher bug.
I ran the selectionwatcher test app and executed the command you sent. I still get no "KWindowSystem: Compositing changed, is now" but miniatures started working after that. So, as you mentioned, this is probably the selectionwatcher bug
Welcome to the club. *** This bug has been marked as a duplicate of bug 179042 ***