Screensharing Completely Crashes Wayland

bunnycat · 2026-08-01 13:38:10

Hello, apologies for odd formatting, I don't use forums often.

I am new to Wayland (though not new to Linux) and it's been generally very smooth whenever I've used it except when I'm screensharing. For some reason, screensharing on Discord makes Wayland entirely crash... I can still hear audio and my microphone input still goes through, but my monitors stop receiving any output and go to sleep until I reboot my computer via holding the button on the physical thing, and I believe this is Wayland itself crashing. Sometimes it will crash the moment I am screensharing, and other times it will crash a few minutes after I start screensharing, but it only crashes when I'm screensharing. I've tried switching to Xorg, but it doesn't seem to be supported on KDE Plasma anymore and breaks when I use it, so I'd rather just figure out a fix to my singular Wayland problem than continuing to figure out what's wrong with Xorg.

I've tried searching for solutions but I haven't seen my problem replicated and nothing has helped so far. Thank you for reading and any help you supply me.

seth · 2026-08-01 14:07:23

https://archlinux.org/packages/extra/x86_64/kwin-x11/

I reboot my computer via holding the button on the physical thing

Avoid that at all costs, as last resort use https://wiki.archlinux.org/title/Keyboa … el_(SysRq) + REISUB but first see whether you can still switch the VT (ctrl+alt+F3) or try to ssh into the system so you can inspect what's going on.
Is this a hybrid graphics system? How do you start the session? SDDM?

loginctl session-status
qdbus6 org.kde.KWin /KWin supportInformation

bunnycat · 2026-08-04 19:00:27

Apologies for the late reply, it appears the issue works slightly differently than I thought. It only crashes once people start washing my stream?
SysRq + REISUB doesn't seem to work when I've tried it. I'm typing about two minutes after another crash like this and it didn't work, and neither did switching the VT. I am unfortunately unaware how to ssh into my system.
If by hybrid graphics system you mean multiple GPUs, no, I only have one and I don't believe my motherboard has one. I started this session via KDE Plasma's login screen.

https://pastebin.com/x5KtkFzu is the result for "loginctl session-status"
https://pastebin.com/S3NmB1ei is the result for "qdbus6 org.kde.KWin /KWin supportInformation"

seth · 2026-08-04 19:45:37

people start washing my stream?

Well… at least you've then a clean stream
So rather network related??
Have you tried whether the same happens w/ kwin_x11 (to sort that out)?

If the system no longer responds to the sysrq (you did explicitly enable it first as explained in the wiki?) you won't be able to ssh into it either - it would imply a complete kernel halt.
Can you keep "dmesg -W" run in a visible terminal window when provoking the crash?

by hybrid graphics system you mean multiple GPUs

Yes.

Arch Linux

#1 2026-08-01 13:38:10

Screensharing Completely Crashes Wayland

#2 2026-08-01 14:07:23

Re: Screensharing Completely Crashes Wayland

#3 2026-08-04 19:00:27

Re: Screensharing Completely Crashes Wayland

#4 2026-08-04 19:45:37

Re: Screensharing Completely Crashes Wayland

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