SUMMARY
I will below list the 28 suspect packages that cause my system to go to a black screen after the plasma desktop appears

STEPS TO REPRODUCE
1. boot up EndeavourOS or CachyOS
2. plasma desktop appears
3. BLACK SCREEN appears

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS

KDE Plasma Version: 6.2 and 6.2.1
KDE Frameworks Version:  6.7
Qt Version: 5 and 6

ADDITIONAL INFORMATION -- SUSPECT PACKAGES
28  extra/kglobalacceld               6.1.5-1 -> 6.2.1-1
27  extra/kinfocenter                 6.1.5-1 -> 6.2.1-1
26  extra/kmenuedit                   6.1.5-1 -> 6.2.1-1
25  extra/kpipewire                   6.1.5-1 -> 6.2.1-1
24  extra/kscreen                     6.1.5-1 -> 6.2.1-1
23  extra/kscreenlocker               6.1.5-1 -> 6.2.1-1
22  extra/ksystemstats                6.1.5-1 -> 6.2.1-1
21  extra/kwin                        6.1.5-1 -> 6.2.1.1-1
20  extra/libkscreen                  6.1.5-1 -> 6.2.1-1
19  extra/libksysguard                6.1.5-1 -> 6.2.1-1
18  extra/libplasma                   6.1.5-1 -> 6.2.1-1
17  extra/milou                       6.1.5-1 -> 6.2.1-1
16  extra/plasma-activities           6.1.5-1 -> 6.2.1-1
15  extra/plasma-activities-stats     6.1.5-1 -> 6.2.1-1
14  extra/plasma-browser-integration  6.1.5-1 -> 6.2.1-1
13  extra/plasma-desktop              6.1.5-1 -> 6.2.1-1
12  extra/plasma-disks                6.1.5-1 -> 6.2.1-1
11  extra/plasma-firewall             6.1.5-1 -> 6.2.1-1
10  extra/plasma-integration          6.1.5-1 -> 6.2.1-1
 9  extra/plasma-nm                   6.1.5-1 -> 6.2.1-1
 8  extra/plasma-pa                   6.1.5-1 -> 6.2.1-1
 7  extra/plasma-systemmonitor        6.1.5-1 -> 6.2.1-1
 6  extra/plasma-workspace            6.1.5-1 -> 6.2.1.1-1
 5  extra/plasma5support              6.1.5-1 -> 6.2.1-1
 4  extra/polkit-kde-agent            6.1.5-1 -> 6.2.1-1
 3  extra/powerdevil                  6.1.5-1 -> 6.2.1-1
 2  extra/sddm-kcm                    6.1.5-1 -> 6.2.1-1
 1  extra/systemsettings              6.1.5-1 -> 6.2.1-1