How did you do this reinstallation without getting the broken Mesa package at the same time?
I seem to be on 3.1.1 and things are stable?
local/glu 9.0.3-2
Mesa OpenGL utility library
local/lib32-mesa 1:24.3.1-1
Open-source OpenGL drivers - 32-bit
local/mesa 1:24.3.1-1
Open-source OpenGL drivers
local/mesa-utils 9.0.0-5
Essential Mesa utilities
OK thanks I’ll do his updates without doing downgrade and see what I get. If all else fails I’ll just put him on x11 for now since that seems not to be affected. Thanks again.
Not sure if related, but I had the same problems regardless of whether it was X11 or Wayland, missing panels, docks, apps not loading etc.
See mesa was just released in the stable repo.
mesa 1:24.3.1-2
I just updated allowing mesa to upgrade. KDE is now logging in properly without issue on amdgpu with RX 590. 
Edit: There was a new kernel also.
[2024-12-07T12:34:20-0500] [ALPM] upgraded mesa (1:24.3.0-1 -> 1:24.3.1-2)
[2024-12-07T12:34:20-0500] [ALPM] upgraded lib32-mesa (1:24.3.1-1 -> 1:24.3.1-2)
[2024-12-07T12:34:20-0500] [ALPM] upgraded vulkan-radeon (1:24.3.1-1 -> 1:24.3.1-2)
[2024-12-07T12:34:20-0500] [ALPM] upgraded lib32-vulkan-radeon (1:24.3.1-1 -> 1:24.3.1-2)
[2024-12-07T12:34:20-0500] [ALPM] upgraded libpulse (17.0-3 -> 17.0+r43+g3e2bb8a1e-1)
[2024-12-07T12:34:21-0500] [ALPM] upgraded linux (6.12.1.arch1-1 -> 6.12.3.arch1-1)
[2024-12-07T12:34:22-0500] [ALPM] upgraded linux-headers (6.12.1.arch1-1 -> 6.12.3.arch1-1)
[2024-12-07T12:34:23-0500] [ALPM] transaction completed
Thank you Manjaro.
Yonada – 24.2.0
My computer that fails to a black screen in endeavourOS with powerdevil above v6.1.5, WORKS on Manjaro
What is your gpu?
AMD Radeon RX 6600
mhwd-amdgpu 19.1.0-1
Strange …others with same gpu have no issue with mesa and this gpu. Do you think it’s caused by Powerdevil?
Edit: What does this mean? Specifically mhwd? Are you using the pro drivers?
mhwd-amdgpu 19.1.0-1
Edit: This is Manjaro? Correct? 
yes most DEFINITELY
when searching my packages with Octopi for amdgpu, that is what was shown
Bladk screen issue DOES NOT appear with powerdevil. 6.2.4 on Manjaro Stable v24.2.0
Well i have powerdevil installed also as i think it’s installed on EOS. No issue with this one.
Edit: Or maybe I installed it? Not sure. 
[ricklinux@rick-ms7c37 ~]$ pacman -Qi powerdevil
Name : powerdevil
Version : 6.2.4-1
Description : Manages the power consumption settings of a Plasma Shell
Architecture : x86_64
URL : https://kde.org/plasma-desktop/
Licenses : LGPL-2.0-or-later
Groups : plasma
Provides : None
Depends On : ddcutil gcc-libs glibc plasma-activities kauth kcmutils kconfig kcoreaddons kcrash
kdbusaddons kglobalaccel ki18n kidletime kirigami kitemmodels knotifications kservice ksvg
kwindowsystem kxmlgui libkscreen libplasma libxcb plasma-workspace qcoro qt6-base
qt6-declarative qt6-wayland solid systemd-libs wayland
Optional Deps : kinfocenter: for the Energy Information KCM [installed]
power-profiles-daemon: power profiles support [installed]
tlp: alternative power profiles support
Required By : plasma-desktop
Optional For : None
Conflicts With : None
Replaces : None
Installed Size : 4.63 MiB
Packager : Tomaz Canabrava <tcanabrava@archlinux.org>
Build Date : Wed 27 Nov 2024 06:27:22 AM
Install Date : Wed 27 Nov 2024 09:01:57 AM
Install Reason : Explicitly installed
Install Script : No
Validated By : Signature
[ricklinux@rick-ms7c37 ~]$
my observation with the same hardware booting Manjaro or EOS is what I have reported.
powerdevil 6.1.5 with all other EOS plasmla packages up-to-date GOOD
powerdevil 6.2.4 with all other EOS plasmla packages up-to-date black screen
Well @swh has the same gpu i think.
Yes … i understand just trying to see if it’s same with same hardware.
But of course right after I just did his updates and put him on x11. 
Well at least it’s easy to log out and log back in on Wayland.
Lenovo Legion T5 26ARA8
AMD Ryzen 7 7700
Radeon RX 6600
samsung s32ag55 monitor
So you have the 7000 series gpu. I think @swh was 6000 series.