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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

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Accidentally uninstalled an important package in Debian Sid with KDE, transparency no longer working (lemmy.world)

submitted 7 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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[–] kyoji@lemmy.world 13 points 7 months ago (12 children)

Are you on BTRFS? If so maybe you could restore to a snapshot prior to the apt upgrade?

I'm not very familiar with Debian, but perhaps there are official "groups" of packages that comprise a set of softwares, like KDE. Perhaps you could re-install that group, if it exists?

You could also create a new user, log in as that user, and see if the issue persists. If so then you'll know it's a system wide issue. If not, then maybe you could migrate to the new user?

Good luck!

[–] buffy@lemmy.world 12 points 7 months ago* (last edited 7 months ago) (11 children)

Sadly I am not using BTRFS for my root directory on this specific system. If I end up deciding to reinstall, I will definitely go back to BTRFS to avoid such problems.

Debian actually has a KDE group named kde-full. I reinstalled it but the issue persists, which was honestly surprising to me.

~$ sudo apt install kde-full
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
kde-full is already the newest version (5:147).
0 upgraded, 0 newly installed, 0 to remove and 87 not upgraded.

The new user idea was really clever, thanks for the suggestion! I will try that now and see.

Edit: the new user also presents the same problem. Actually, it makes sense, since SDDM is affected as well (I should have mentioned that before).

[–] billgamesh@lemmy.ml 2 points 7 months ago (1 children)

you installed it without uninstalling first? have you tried an apt purge to get rid of related conf files, then reinstall kde?

[–] buffy@lemmy.world 1 points 7 months ago

You are absolutely right. I just tried apt purge kde* plasma* libkf* and apt install kde-full followed by a reboot. But sadly, the problem persists.

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