this post was submitted on 25 Mar 2024
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Accidentally uninstalled an important package in Debian Sid with KDE, transparency no longer working (lemmy.world)
submitted 8 months ago* (last edited 7 months ago) by buffy@lemmy.world to c/linux@lemmy.ml
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Hi everyone, I ran apt full-upgrade last month and accidentally deleted a couple packages that weren't supposed to be removed, due to me not paying enough attention. I could recover most of the system just fine, since most of the missing features and related packages were obvious to me. However, I still couldn't figure out why transparency is not working on KDE, both in Wayland and X. I suspected it could be a missing compositor, but libwayland and libqt6waylandcompositor6 (and related packages) are all installed (and that wouldn't explain why it isn't also working on X).

I have attached a screenshot to illustrate what I mean.

I would appreciate if anyone could help me figure out what package might be missing that is causing this issue. Thanks in advance!

EDIT: Thank you so much everyone! I finally solved my problem. I just had to replace libqt5quick5-gles by libqt5quick5 (non gles version).

Commandline: apt install libqt5quick5
Install: libqt5quick5:amd64 (5.15.10+dfsg-2+b2)
Remove: libqt5quick5-gles:amd64 (5.15.10+dfsg-2+b2)
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[–] buffy@lemmy.world 1 points 7 months ago (1 children)

I agree with that. I suspect you might be right. SDDM (Breeze) is also weird with transparency. However, I just installed materia-kde but unfortunately the problem persisted (screenshot attached). Before that, I ran apt purge kde* plasma* libkf* and apt install kde-full. That too didn't solve my problem.

[–] Ephera@lemmy.ml 3 points 7 months ago (1 children)

I can't believe, I seem to be the first to ask this, but are maybe graphics drivers broken? Are you on Nvidia?

Those black squares for the status bar icons, I think, I've seen before somewhere, so I'm at least guessing that your problem isn't a completely new problem...

[–] buffy@lemmy.world 4 points 7 months ago* (last edited 7 months ago) (1 children)

You are right, I should have made this clear. I am not on Nvidia, I am using an old Thinkpad on Intel Haswell.

I'm glad to know my problem isn't completely new. I'll look into it further online. If you ever find a link to a report of a similar issue, I would be happy to see!

Edit: I found this link, the issue reported appears to be very similar to what I'm seeing here https://libreddit.tux.pizza/r/kde/comments/jhqbnz/kde_plasma_rendering_problem_black_squares/

Edit 2: I finally solved my problem! It was indeed an old problem already reported somewhere.

[–] Ephera@lemmy.ml 3 points 7 months ago

Awesome!