Bug 488530

Summary: Background flickers between transparent and non-transparent
Product: [Applications] konsole Reporter: Freddie Witherden <freddie>
Component: generalAssignee: Konsole Developer <konsole-devel>
Status: REPORTED ---    
Severity: normal CC: freddie, jchevarley
Priority: NOR    
Version: 24.05.1   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Video showing the effect.

Description Freddie Witherden 2024-06-15 12:26:01 UTC
Created attachment 170519 [details]
Video showing the effect.

On a Gentoo ~AMD64 X11 system under Qt 6.7.1 and KDE frameworks 6.3.0 the background in Konsole flickers between being transparent and non-transparent as the window redraws.  (This can include new text being drawn or just mousing over a widget on the tab bar.)

This appears to be a regression as the functionality worked fine under KDE Frameworks 5 (I noticed upon upgrading).  Am using an Intel GPU with a 6.9 kernel and the latest Mesa release.

Reproduce: under an X11 session open Konsole.  Go Settings -> Edit Current Profile -> Appearance -> Edit [Yuck!] -> Set "Background colour transparency" to a reasonable number.  Then Apply and interact with the session.

Screencast taken with Spectale attached.
Comment 1 Freddie Witherden 2024-06-17 15:36:20 UTC
Minor update: I am actually running Wayland rather than X11.
Comment 2 Joe 2024-08-05 01:13:52 UTC
I have a similar issue since 6.0 came out, although mine is the entire background. Right now my unfocused Konsole background is not transparent (and it should be). If I move my mouse over, the entire background flickers for a moment transparent and back to solid. If I click into Konsole/focus it, it goes transparent. Moving the mouse, key strokes, and even command output (like tailing a log) can make the background switch between transparent and not. 

Operating System: Arch Linux 
KDE Plasma Version: 6.1.3
KDE Frameworks Version: 6.4.0
Qt Version: 6.7.2
Kernel Version: 6.6.40-2-lts (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 6900 XT