hoping to ward off this bug becoming present in future Manjaro updates
On EndeavourOS and CachyOS partition:
since plasma 6.2 and continuing in 6.2.1
BLACK SCREEN
Still have to CTL-ALT # to terminal, CTL-ALT# to open plasma desktop
Lenovo Legion T5 26ARA8
AMD Ryzen 7 7700
Radeon RX 6600
samsung s32ag55 monitor
(successful upgrade on totally different system)
possibly related to ddcutil, powerdevil and plasma-desktop ??
Sorry, this doesn’t tell us anything useful. Some context is needed to allow anyone to do much more than look for the nearest crystal ball.
Additionally, system information is a prerequisite for others to have a better understanding of your hardware.
At the barest minimum, please provide the output of the following command;
inxi --admin --verbosity=8 --filter --no-host --width
along with any other information you can provide.
Please also ensure that command output is posted according to forum requirements (see below).
Hi @maclion and welcome to the Manjaro community.
As a new forum user, please take some time to familiarise yourself with Forum requirements; in particular, the many ways to use the forum to your benefit.
To that end, some or all these links may be invaluable:
Last, but not least, the Update Announcements, which you should check frequently for important update related information.
An issue may be directly related to a particular update; these announcements should generally be checked before posting a request for support.
I hope this is helpful.
Cheers.
I see this in a recent update announcement:
… which seems similar (in essence) but you’re using AMD graphics, so it’s not likely to be related.
Here’s another thread that seems similar to what you describe (at least, at face value), but as yet has no solution:
Keep in mind that while it might not be currently possible to login via a TTY, you can still boot with the Manjaro ISO and open a chroot environment to affect repairs or troubleshoot.
While it’s actually meant for another scenario, this tutorial gives instructions on how to enter a chroot environment;
keep this handy, as it will likely be needed:
Good luck.
Important – If you are using BTRFS please tell us.
(if you don’t know what that is, nevermind it. 
).
I would recommend that you keep an eye on the Unstable Updates and Testing Updates topics, as any issues will likely appear and almost certainly be resolved in those branches before Plasma 6.2 is rolled out to Stable Branch.
And, of course, before updating your Stable branch installation of Manjaro, you should always read the related Stable Updates announcement, especially the “Known issues and solutions” section of the thread.
3 posts were split to a new topic: Black screen logging
soundofthunder
explain simply how you want my results from:
inxi --admin --verbosity=8 --filter --no-host --width
I will below list the 28 suspect packages that cause my system to go to a permanent black screen after the plasma desktop appears
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
hoping to ward off this bug becoming present in future Manjaro updates
I didn’t immediately realise you were a new forum user.
Copy the output from that command into your next post – you should use the button that looks like </> which would convert the pasted text to a scrollable preformatted text box to make it generally more readable for others.
Before you do this, please read information previously provided which includes links to help you understand how to use any forum formatting required.
Please also edit your previous post with the same intention. As that text already exists, place three (3) backspace characters both before and after the command output.
Like this:
```
[Assume this is your great wall of text]
```
I trust this is simple enough. 
Can you please indicate why you suspect any of these packages may be causing your apparent issue?
There is no bug unless others can reproduce an issue.
Which bug?
I have no black screen - I am thinking this is local to your system.
Operating System: Manjaro Linux
KDE Plasma Version: 6.2.1
KDE Frameworks Version: 6.7.0
Qt Version: 6.8.0
Kernel Version: 6.11.5-1-MANJARO (64-bit)
Graphics Platform: Wayland
Processors: 24 Ă— AMD Ryzen Threadripper PRO 5945WX 12-Cores
Memory: 62,6 GiB of RAM
Graphics Processor: AMD Radeon RX 7900 XTX
Manufacturer: LENOVO
Product Name: 30E000GMMT
System Version: ThinkStation P620
My got to is booting to a command line,
or going even going to a tty screen and doing a
sudo timeshift --restore.
Is that possible?
I am a relative novice to posting here. I ran the command in the terminal and seem to understand that I should NOT copy and paste the output directly into a text message.
I now have narrowed down the suspect packages to these ten:
10 extra/plasma-disks 6.1.5-1 → 6.2.2-1
9 extra/plasma-firewall 6.1.5-1 → 6.2.2-1
8 extra/plasma-integration 6.1.5-1 → 6.2.2-1
7 extra/plasma-nm 6.1.5-1 → 6.2.2-1
6 extra/plasma-pa 6.1.5-1 → 6.2.2-1
5 extra/plasma-systemmonitor 6.1.5-1 → 6.2.2-1
4 extra/plasma-workspace 6.1.5-1 → 6.2.2-1
3 extra/plasma5support 6.1.5-1 → 6.2.2-1
2 extra/polkit-kde-agent 6.1.5-1 → 6.2.2-1
1 extra/powerdevil 6.1.5-1 → 6.2.2-1
to all you code sleuths, while I cannot pinpoint the faulty package YET – there is an actual bug that affects only some and it causes a black screen to display after the plasma desktop briefly appears — reporting that YOUR system is unaffected is helpful how?
And yet, you still do it, despite being given the necessary information needed to correct that. 
You have not told us how you have narrowed down this list of what you call suspect packages…
All you have given us so far is a list of packages and the vague presumption that there must be a bug; yet you provide nothing that supports that.
Let me ask YOU… how is that helpful?
Where is this *actual bug documented?
While it is always possible that (as yet) undiscovered bugs may exist in software, until a bug is actually diagnosed and defined (and is clearly reproducable by others) I’m afraid it is not a bug.
This typically indicates that the issue you’re experiencing is specific to your system, and does not affect everyone using KDE Plasma 6.2.
And this is understandable, as Plasma 6.2 hasn’t reached the Stable branch yet – 6.2.2-1 is in Unstable, and 6.2.1-1 is in Testing.
Now, if you had taken the time to specify that you are using either of these branches, that would potentially have saved time from the onset.
I suggest you heed the advice already given by @scotty65:
You should always read these announcements before posting; it can often save much wasted time.
There already exist known issues (with solutions) that may well be related to your problem. Read through the respective Update Announcements and they should magically reveal themselves unto you.
But, don’t stop there; continue reading through those announcement threads, as important information may be gleaned throughout the general comments also.
Incidentally, it seems apparent that you are refusing to provide the requested information.
In depth system information will usually allow others a better insight to other factors that might be contributing to your problem.
Please provide the command output of:
inxi --admin --verbosity=8 --filter --no-host --width
I asked - which bug?
A bug can be reproduced at will using a documented flow.
I provided some comparison to a system which do not exhibit the behaviour you describe.
I feel the need to emphasize that Manjaro does not fix upstream bugs - if a bug is present - and it can be reproduced - the correct approach is to log the bug with upstream’s bugtracker.
Having a black screen with Plasma 6.2 is a common and sometimes known issue. There are issues with that via SDDM and other parts. Some might be related to X11, others to the newer Qt 6.8 release or even drivers like from Nvidia. If you have multiple monitors, that can be an issue too. Here some issues on the matter:
As usual, if you have modified your Plasma experience you may want to try with a new user on your system, delete the cache or do the usual regular major Plasma migration routines.
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
Problem occurred in EndeavourOS, never got explained clearly, also no real solution being presented.