Occasional Waybar crash after suspend

[Diax170]

I am not sure whether I should report this here or to Waybar but I have a dual monitor setup, output config here

And sometimes after I suspend my machine and wake it up Waybar spits this out:

Gdk-Message: 22:33:42.834: Error 71 (Protocol error) dispatching to Wayland display.

and quits with code 1 (w/o segfault)

If I relaunch it, it appears for a split second and quits with exit code 1 again with this being the relevant log output at the end (I have the highest verbosity on):

[2026-07-05 22:33:42.827] [info] Bar configured (width: 1080, height: 35) for output: HDMI-A-1
[2026-07-05 22:33:42.828] [info] Bar configured (width: 2752, height: 35) for output: DP-2
[2026-07-05 22:33:42.833] [info] Bar configured (width: 2752, height: 35) for output: DP-2
Gdk-Message: 22:33:42.834: Error 71 (Protocol error) dispatching to Wayland display.

This only occurs with the latest git release and doesn't seem to also happen with the stable Nixpkgs version (although I haven't tested thoroughly yet).

Sometimes I reenable the monitor and it's fine

I am using the 6.18.37 LTS kernel

I thought it might be worth mentioning this here because as this is a "protocol error" it might be a Scroll or wlroots thing

[dawsers]

This is hard for me to test, because I am on a desktop and cannot suspend it. If I were you, I would test the latest sway to see if it also happens there.

[Diax170]

I'm troubleshooting a bit more, and so far I've noticed that it also happens when I unplug my monitors and plug them back in. I also have a script that automatically switches to my laptop's internal panel if both monitors are disconnected and back if one is connected.

So I'd say this occurs when the monitors are reconnected, or something (I think suspending also triggers a similar event since the monitors also go to sleep mode and disconnect themselves)

I think this is more of a Waybar issue than Scroll because I've also tested it with a couple of other bars and only Waybar seems to crash. And yet again, while the Git release crashes, the stable Nixpkgs version is fine. I'll mention it in the Waybar's issue tracker then

[Diax170]

This turned out to be an upstream gtk-layer-shell issue, not even Waybar. See Alexays/Waybar#4399 and Alexays/Waybar#4361