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81bones 07-12-2022 09:44 PM
Issues installing KDE on CentOS 9 Stream
 
I am building a new system and would like to run CentOS 9 Stream with KDE Plasma. There are a handful of tutorials on the web detailing how to install the necessary packages and switch from Gnome to KDE; the best representation of these tutorials is probably the one at LinuxCapable.com.

All of the tutorials boil down to enabling a few repos and then using dnf to install the "KDE Plasma Workspaces" group of packages. I have a fresh install of CentOS 9 and I just cannot get this to work.

All of the necessary packages are supposedly available in EPEL. With just the EPEL repo enabled, I get the following errors when I attempt to install the packages:

Code:
[81bones@localhost ~]$ sudo dnf groupinstall "KDE Plasma Workspaces" -y
Last metadata expiration check: 0:16:58 ago on Tue 12 Jul 2022 09:16:53 PM CDT.
No match for group package "k3b-extras-freeworld"
No match for group package "gstreamer1-plugins-ugly"
No match for group package "gstreamer1-plugins-bad-freeworld"
Error:
 Problem 1: package qt5-qtwebengine-5.15.8-3.el9.1.x86_64 requires libQt5Gui.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - package qt5-qtwebengine-5.15.8-3.el9.1.x86_64 requires libQt5Widgets.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - cannot install both qt5-qtbase-gui-5.15.2-26.el9.x86_64 and qt5-qtbase-gui-5.15.3-1.el9.x86_64
  - cannot install both qt5-qtbase-gui-5.15.2-27.el9.x86_64 and qt5-qtbase-gui-5.15.3-1.el9.x86_64
  - cannot install both qt5-qtbase-gui-5.15.2-28.el9.x86_64 and qt5-qtbase-gui-5.15.3-1.el9.x86_64
  - cannot install both qt5-qtbase-gui-5.15.2-29.el9.x86_64 and qt5-qtbase-gui-5.15.3-1.el9.x86_64
  - package kdeplasma-addons-5.23.5-2.el9.x86_64 requires libQt5WebEngineCore.so.5()(64bit), but none of the providers can be installed
  - package kdeplasma-addons-5.23.5-2.el9.x86_64 requires libQt5WebEngineCore.so.5(Qt_5)(64bit), but none of the providers can be installed
  - package kdeplasma-addons-5.23.5-2.el9.x86_64 requires libQt5WebEngine.so.5()(64bit), but none of the providers can be installed
  - package kdeplasma-addons-5.23.5-2.el9.x86_64 requires libQt5WebEngine.so.5(Qt_5)(64bit), but none of the providers can be installed
  - cannot install the best candidate for the job
  - conflicting requests
 Problem 2: package qt5-qtwebengine-5.15.8-3.el9.1.x86_64 requires libQt5Quick.so.5(Qt_5.15.2_PRIVATE_API)(64bit), but none of the providers can be installed
  - cannot install both qt5-qtdeclarative-5.15.2-10.el9.x86_64 and qt5-qtdeclarative-5.15.3-1.el9.x86_64
  - cannot install both qt5-qtdeclarative-5.15.2-9.el9.x86_64 and qt5-qtdeclarative-5.15.3-1.el9.x86_64
  - package kmail-21.08.3-1.el9.x86_64 requires libQt5WebEngineCore.so.5()(64bit), but none of the providers can be installed
  - package kmail-21.08.3-1.el9.x86_64 requires libQt5WebEngineCore.so.5(Qt_5)(64bit), but none of the providers can be installed
  - cannot install the best candidate for the job
  - conflicting requests
(try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)
Some tutorials include instructions to enable the EPEL-Next repo. Unfortunately this still doesn't work. With the EPEL-Next repo enabled, I get this error:

Code:
[81bones@localhost ~]$ sudo dnf groupinstall "KDE Plasma Workspaces" -y
Last metadata expiration check: 0:00:01 ago on Tue 12 Jul 2022 09:35:57 PM CDT.
No match for group package "k3b-extras-freeworld"
No match for group package "gstreamer1-plugins-ugly"
No match for group package "gstreamer1-plugins-bad-freeworld"
Error:
 Problem: cannot install the best candidate for the job
  - nothing provides egl-utils needed by kinfocenter-5.24.5-2.el9.next.x86_64
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)
I haven't tried to use the --nobest or --skip-broken options yet, and I'd really prefer not to. With a fresh install, it would be nice to have everything working properly with all the necessary packages to start out. None of the tutorials or other posts describing how to install KDE discuss issues like this.

Does anyone have any thoughts on what the problem might be? Perhaps the repo developers are just in between package rollouts and it's just dumb luck that I happen to be trying to install KDE right now (and after a week or two the problem will fix itself)?

smallpond 07-18-2022 07:13 AM
I've always had good luck using Fedora rpms when RedHat didn't have what I needed. I just switched my Fedora system to KDE with no external repos.

81bones 07-25-2022 07:06 PM
Yeah, I would bet that would probably work. But since my purpose behind using CentOS 9 Stream as my OS was to have an OS that was relatively stable and with a relatively long life, I'm a little hesitant to have Fedora packages in there since the life cycle for Fedora releases is so short. It just seems super odd that it's not working as-is, which is concerning...for example, will something like this be routine in CentOS 9 Stream?

Case in point: I started over and installed a fresh copy of AlmaLinux. I used the dnf groupinstall "KDE Plasma Workspaces" command right after install (just like I tried with CentOS 9 Stream) and this time it seems to have worked as intended. KDE installed successfully and I was able to log in using it. I would guess it would be similarly successful with Rocky Linux as well.

So...not sure why it doesn't work with CentOS 9 Stream, which is disappointing. Unfortunately perhaps this highlights a real-world difference between the CentOS 9 Stream and what would have been the traditional version of CentOS 9 before The Change?

In any event, it looks like if you'd like to use KDE with EPEL packages, you'll have better luck with something like Alma or Rocky.

boughtonp 07-26-2022 08:34 AM
Quote:
Originally Posted by 81bones (Post 6369936)
In any event, it looks like if you'd like to use KDE with EPEL packages, you'll have better luck with something like Alma or Rocky.
Stream is for people who want to be beta testers.

If one wants stable and long-life, pay for RHEL or use Alma/Rocky.

chrism01 07-27-2022 12:46 AM
I'd just like to upvote this
Quote:
Stream is for people who want to be beta testers.

If one wants stable and long-life, pay for RHEL or use Alma/Rocky.
:)


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