Built in screen not working

Hello,

I am currently facing the following problem: My laptop works perfectly fine with the lts kernel (6.1.68). But when I try to use the current kernel (6.6.7), my internal display shows the boot process. When this is finished, it shows a mouse cursor for a split second before the screen goes black. Also, trying to display the command line (crtl + alt + f2) does not display anything. When I plug in an external display, it is normally picked up as a secondary display. I can also see and rearrange both displays in the KDE window manager. I have tried different resolutions without success.
See below for more information about my system. I would appreciate any assistance with this problem.

Operating System: EndeavourOS
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.112.0
Qt Version: 5.15.11
Kernel Version: 6.1.68-1-lts (64-bit)
Graphics Platform: Wayland
Processors: 16 Ă— AMD Ryzen 7 6800U with Radeon Graphics
Memory: 13,3 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: LENOVO
Product Name: 82QF
System Version: Yoga 7 14ARB7

Is it similar to this issue? Newish installation black screen after update

There seems to be a connection. Although the user in the given post describes the screen going black immediately after selection of the kernel, while I can still see the boot process. The screen only goes black when the desktop environment is loaded (KDE in my case). The “solution” in the linked thread is to reinstall EOS. I don’t think this is a real solution. I have had other problems with the non-LTS kernel in the past (e.g. keyboard not working). These were fixed by updating the kernel. So I will wait for a possible upstream solution.

Though if other experience similar issues or have suggestions for a possible fix please let me know

https://discovery.endeavouros.com/forum-log-tool-options/how-to-include-systemlogs-in-your-post/2021/03/

read this and post a journal at least

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Sorry here are the logs:
journalctl -k -b -1 | eos-sendlog ( I used -1 as I have no display output when the error occurs and I need to reboot with the lts kernel): https://0x0.st/HgPY.txt

inxi -Fxxc0z | eos-sendlog : https://0x0.st/HgPI.txt

I don’t see any errors, maybe try a different login manager?

take a look around here https://gitlab.freedesktop.org/drm/amd/-/issues

and wherever they report bugs for kwin

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So I did not open any bug. And just waited over the Christmas days. Today I just did an eos-update --yay and rebooted my Laptop. No problems since than on both kernels.

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