Bug 390082

Summary:	Application Dashboard leaks graphics memory (glitched background) with multiple displays
Product:	[Plasma] kdeplasma-addons	Reporter:	Bernhard <micraft.b>
Component:	Application Dashboard	Assignee:	Eike Hein <hein>
Status:	RESOLVED FIXED
Severity:	normal	CC:	nate, plasma-bugs
Priority:	NOR
Version:	5.12.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	Background leaks from outside framebuffer How it should look (while dragging window)

Description Bernhard 2018-02-08 15:09:24 UTC

When using multiple displays of different orientation the Application Dashboard gets the offset of the display from the x11-framebuffer wrong.
My display starts at +0+560 (xrandr format) but the blurred background is calculated from -560px (vertical) outside of the framebuffer instead if from +560px.
The result is some graphics memory from outside the framebuffer leaking, resulting in a flashing background of mostly garbage [as in upper half of attachment].

Everything looks like it should when pressing ALT plus grabbing the Application Dashboard. [as in bottom half of attachment]

Comment 1 Bernhard 2018-02-08 15:13:44 UTC

Created attachment 110439 [details]
Background leaks from outside framebuffer

Comment 2 Bernhard 2018-02-08 15:14:47 UTC

Created attachment 110440 [details]
How it should look (while dragging window)

Comment 3 Bernhard 2018-02-08 17:48:24 UTC

I just realized I get the exact same problem with the blurred background of the fullscreen "logout menu". Also, I only get this with X11, works correctly with Wayland.

Comment 4 Bernhard 2023-10-16 12:19:26 UTC

Seems fixed