https://bugs.kde.org/show_bug.cgi?id=499015
strong.drum0...@fastmail.com changed:
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--- Comment #6 from strong.drum0...@fastmail.com ---
Thank you so much for bringing up this bug. I have seen this bug on my main
system yesterday, and since it was a pretty severe crash of the entire X
session, it prompted me to make an account here. I tried to reproduce the bug
again and... there seems to be quite a lot of complexity to everything
concerning screens and gpus; appreciating this I try to boil it down as best as
possible. This is probably becoming way too verbose, but bear with me.
Since Wayland isn't affected, I focused on testing with Plasma X11.
Updating the system seems to have fixed it. My arch system was like a week old.
Tested on a system with Nvidia and another with amdgpu: It does not crash, just
on one screen it takes a long time (~60 sec) for the Desktop to load anything
again, until then it's just black screen with a mouse cursor and the screen
arrangement is accepted. On amd system it loads instantly. So for me, the total
crash is not reproducible anymore, thankfully.
There are other problems with the System Settings > Display Configuration
dialogue that need addressing and I will mention them, but they are minor in
comparison and will be discussed in another ticket.
If maybe someone can try and reproduce it like this, I would be interested in
hearing the results.
Steps:
- Log in to Plasma X11
- Go to Settings > Display Configuration. Arrange your screens in an extended
layout (not cloned).
- Under Device, Select external screen, untick "Enabled".
- [Some people might ask themselves, why disable one screen? Well, sometimes I
want one screen especially when at night and I want to dial down the lights or
generally when playing a game]
- Log off from X11, or even restart machine and log back in.
- Bring back Display Configuration, Under Device, Select external screen, tick
"Enabled".
- What comes next is weird, the previous screen arrangement is not saved from
previously and a cloning layout is created. (I have confirmed this on both
machines and I will address this in another ticket).
- Weird: The cloning layout on this machine takes a long while to load properly
and things aren'ct clickable until you move some windows.
- For sake of reproduction (when it crashed I did this), apply the cloned
layout.
- Because Cloning is not what I want I drag the screens to an extended layout
manually. This is when the one screen turns black for a minute then the desktop
comes back.
- One screen is 1080p and the other is 1440p. Sometimes I get the impression
that bugs can occur due to the different resolutions.
System Information (slow loading back)
Operating System: Arch Linux
KDE Plasma Version: 6.3.3
KDE Frameworks Version: 6.12.0
Qt Version: 6.8.2
Kernel Version: 6.13.7-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5700X3D 8-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 2070 SUPER
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7B85
System Version: 1.0
System Information (tested Plasma 6.3.2 and 6.3.3, on both it works flawlessly)
Operating System: Arch Linux
KDE Plasma Version: 6.3.3
KDE Frameworks Version: 6.12.0
Qt Version: 6.8.2
Kernel Version: 6.13.7-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 8 × AMD Ryzen 5 3550H with Radeon Vega Mobile Gfx
Memory: 13.6 GiB of RAM
Graphics Processor 1: AMD Radeon Vega 8 Graphics
Graphics Processor 2: AMD Radeon RX 5500M
Manufacturer: Micro-Star International Co., Ltd.
Product Name: Alpha 15 A3DD
System Version: REV:1.0
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