Arch Linux

Udhtu_Max

Member

Registered: 2022-07-17

Posts: 13

Wayland on kde shows black screen

When i switch x11 to wayland (plasma) on sddm he shows me a black screen
with nothing in it until sddm kicks me to login screen.

Useful system specs:
(neofetch)

udhtu_max@archlinux
-------------------
OS: Arch Linux x86_64
Host: H110M-M.2
Kernel: 5.18.9-263-tkg-pds
Packages: 1242 (pacman), 11 (flatpak)
Shell: bash 5.1.16
Resolution: 1366x768
DE: Plasma 5.25.3
WM: KWin
Terminal: yakuake
CPU: Intel Celeron G3930 (2) @ 2.900GHz
GPU: Intel HD Graphics 610

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,266

Re: Wayland on kde shows black screen

Check/post the journal after creating such a crash:

sudo journalctl -b

https://wiki.archlinux.org/title/List_o … n_services also check whether you get a plasma/kwin coredump and post that as well: https://wiki.archlinux.org/title/Core_d … _core_dump (this will be most useful if you install debuginfod before attempting to log in and producing the coredump)

Udhtu_Max

Member

Registered: 2022-07-17

Posts: 13

Re: Wayland on kde shows black screen

Check/post the journal after creating such a crash:

sudo journalctl -b

https://pastebin.pl/view/4da888b7 the rest of coredumps are pretty much the same

Last edited by Udhtu_Max (2022-07-20 17:53:15)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,266

Re: Wayland on kde shows black screen

That doesn't contain the symbols. Install debuginfod, produce the crash, run coredumpctl gdb -> bt full on the crash containing an actual stack trace that can be/is filled with symbols

tsallinia86

Member

Registered: 2021-04-17

Posts: 6

Re: Wayland on kde shows black screen

Probably a bit off topic, but why would you want to use Wayland with KDE? It's not ready yet and has lots of incompatibilities. Granted, it's the way forward, but for KDE it's not fully usable yet. If you want a better Wayland experience, consider switching to Gnome.

Even if you manage to solve the issue, I don't think you will find Wayland with KDE a great combo...

ps) I literally switched it yesterday as it was an awful experience. And since I love my KDE, I am staying with X11 for the time being.

Last edited by tsallinia86 (2022-07-21 14:50:19)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,671

Re: Wayland on kde shows black screen

If I understand, you log in from sddm, have a black screen for some period of time, then get kicked back out to sddm again?  Sounds like KDE is crashing.  KDE works with Xorg?

Probably a bit off topic, but why would you want to use Wayland with KDE? It's not ready yet and has lots of incompatibilities.

Bug testing?  Security?  Smaller footprint?  (BTW, not making an assertions as to the last two).  I am using KDE on Plasma as I write this (Intel Iris Xe graphics) and it works just fine.  Frankly it is very stable and is pretty much indistinguishable from KDE on Xorg.

---

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The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
---
How to Ask Questions the Smart Way

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,266

Re: Wayland on kde shows black screen

The main reason I'm currently using it is that you can leave the compositor enabled in a multi-monitor setup without running into a stuttering mess for either the game (compositor on) or other stuff (compositor off). And I don't like GNOME's workflow.

And it definitely does work stable here.

tsallinia86

Member

Registered: 2021-04-17

Posts: 6

Re: Wayland on kde shows black screen

I am using KDE on Plasma as I write this (Intel Iris Xe graphics) and it works just fine.  Frankly it is very stable and is pretty much indistinguishable from KDE on Xorg.

I had exactly the opposite experience for a few days and had to return back to X11.  Lots of podcasters make the same claim as well. I run a Dell Latitude E6440.

tsallinia86

Member

Registered: 2021-04-17

Posts: 6

Re: Wayland on kde shows black screen

And I don't like GNOME's workflow.

Nobody does :-p

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,671

Re: Wayland on kde shows black screen

I had exactly the opposite experience for a few days and had to return back to X11.  Lots of podcasters make the same claim as well. I run a Dell Latitude E6440.

I believe that. It is certainly a case of YMMV.  The KDE community even has a showstoppers page.  Plasma on Wayland works for the stuff I do on my hardware; I don't necessarily recommend it.  But using it when you can and providing feedback is a critical part to the success of FOSS and is a good way to contribute.

---

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
---
How to Ask Questions the Smart Way

Udhtu_Max

Member

Registered: 2022-07-17

Posts: 13

Re: Wayland on kde shows black screen

why would you want to use Wayland with KDE?
And since I love my KDE, I am staying with X11 for the time being.

First question: i want to use wayland cause of it responsiveness and less resource intensive than x11(i tested it with garuda linux + kde)

second question: i love kde too i don't plan of leaving for now (wallpaper engine some extensions plasmoids and stuff)

Udhtu_Max

Member

Registered: 2022-07-17

Posts: 13

Re: Wayland on kde shows black screen

If I understand, you log in from sddm, have a black screen for some period of time, then get kicked back out to sddm again?  Sounds like KDE is crashing.  KDE works with Xorg?

yup it works well as for the other reason for trying it: helping the wayland team by sending bug reports and i want some little more performance in my machine to play some games(i know gaming on Linux it's not the best combination but i don't care too much if i have to tinker a little to get my things working)

IceCold

Member

Registered: 2022-07-21

Posts: 8

Re: Wayland on kde shows black screen

Same for me, i find the solution of disable (uncheck) 3D Acceleration in the Display Settings on VM

Udhtu_Max

Member

Registered: 2022-07-17

Posts: 13

Re: Wayland on kde shows black screen

Same for me, i find the solution of disable (uncheck) 3D Acceleration in the Display Settings on VM

well I'm not in a vm but thanks for the tip.

Last edited by Udhtu_Max (2022-07-22 02:12:04)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,534

Re: Wayland on kde shows black screen

That doesn't contain the symbols.

It actually replaces large parts (the relevant ones) with "...skipping..." - the included ones are merely pending threads that are not relevant to the segfault.

@Udhtu_Max, don't randomly edit stuff unless you positively know what you're doing - debug symbols or not, post the entire coredump and also the requested system journal for context.

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Udhtu_Max

Member

Registered: 2022-07-17

Posts: 13

Re: Wayland on kde shows black screen

That doesn't contain the symbols.

It actually replaces large parts (the relevant ones) with "...skipping..." - the included ones are merely pending threads that are not relevant to the segfault.

@Udhtu_Max, don't randomly edit stuff unless you positively know what you're doing - debug symbols or not, post the entire coredump and also the requested system journal for context.

ok sorry for being late is because i buyed i new ssd and reinstalled arch and everything.
next time i appear here i'll drop the coredump.
and the thing about randomly editing things most of the time i know what I'm doing in the system.