ERROR: Unhandled XServer error: BadWindow (invalid Window parameter)

[jdsutton7]

Tested versions

4.4.beta1.mono.official d33da79

System information

Godot v4.4.beta1.mono - Linux Mint 22.1 (Xia) on X11 - X11 display driver, Multi-window, 1 monitor - OpenGL 3 (Compatibility) - NVIDIA GeForce GTX 1070 (nvidia; 550.120) - Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz (8 threads)

Issue description

Godot frequently crashes with the following error:

ERROR: Unhandled XServer error: BadWindow (invalid Window parameter)
   Major opcode of failed request: 20
   Serial number of failed request: 0
   Current serial number in output stream: 938799
   at: default_window_error_handler (platform/linuxbsd/x11/display_server_x11.cpp:1180)

Steps to reproduce

Edit any project and run the game - happens intermittently

Minimal reproduction project (MRP)

N/A - happens across projects

[matheusmdx]

This looks like the same problem as #102321 that was fixed by #102329. Could you test the 4.4 beta 3 and see if was fixed?

[Talavanor]

I had this issue crop up running on Godot v4.4.beta3. So far it happened a single time and I've been unable to find any sort of repro for it.

System information

Godot v4.4.beta3 - EndeavourOS #1 SMP PREEMPT_DYNAMIC Sun, 02 Feb 2025 01:02:29 +0000 on Wayland - X11 display driver, Multi-window, 2 monitors - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3070 (nvidia; 570.86.16) - Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz (12 threads)

[matheusmdx]

@Talavanor Check issue #102321, there has the steps to reproduce the bug and a video that shows the steps.

[Talavanor]

Alright, ran through those repro steps in #102321 and as many variations on them I could think of, but I've been unable to get it to happen again after a few hours of work. I will keep an eye out for the error cropping up again and try to get better info if it does.

[jdsutton7]

I can't reproduce this in 4.4 beta 3. In 4.4b1 this happened most frequently when running the binary from a launcher, running in a terminal made it less frequent. Neither option seems to trigger the error in 4.4b3.

…

On Mon, Feb 17, 2025 at 7:43 PM Z ***@***.***> wrote: Alright, ran through those repro steps in #102321 <#102321> and as many variations on them I could think of, but I've been unable to get it to happen again after a few hours of work. I will keep an eye out for the error cropping up again and try to get better info if it does. — Reply to this email directly, view it on GitHub <#102633 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AT422XNP5BUSTD4S66G3JKT2QKT5HAVCNFSM6AAAAABWZHFZWGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMNRUGUZTONJWHA> . You are receiving this because you authored the thread.Message ID: ***@***.***> [image: Talavanor]*Talavanor* left a comment (godotengine/godot#102633) <#102633 (comment)> Alright, ran through those repro steps in #102321 <#102321> and as many variations on them I could think of, but I've been unable to get it to happen again after a few hours of work. I will keep an eye out for the error cropping up again and try to get better info if it does. — Reply to this email directly, view it on GitHub <#102633 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AT422XNP5BUSTD4S66G3JKT2QKT5HAVCNFSM6AAAAABWZHFZWGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMNRUGUZTONJWHA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[matheusmdx]

I'll close this as fixed by #102329. If you find this bug again in 4.4 beta 3 or up let us know so the issue can be reopened.

[gelvinp]

I am encountering this on 4.4-stable, though I'm not even interacting with the Godot window, and nothing is crashing.

For background, I'm trying to verify which commit introduced the xcb "unknown sequence number" issue, so I have two instances of Godot open. One of them is from 4.4-stable, and the other has a few small changes applied on top of that. Mostly I'm just leaving them open on a side monitor for the next 24 hours to make sure that the one I expect to crash is crashing, and the one I expect to not crash is not.

For each version, I have both the editor open (with update continuously not checked) and a "game" running from the editor (with low processor mode enabled). The game is a Node3D with a camera and nothing else, and a tool script that counts how many hours the game and editor have been running.

I've had a few "Unhandled XServer error: BadWindow (invalid Window parameter)" errors pop up on the modified version, usually they appear at the same time that I'm closing a different program (i.e. I exit firefox, and that moment is when one of the errors appeared). I thought this was a strange side effect of the change I was testing, but I just saw it happen on the unmodified 4.4-stable build as well. I can reliably cause the error by just opening the KDE plasma application launcher (see screen recording).

2025-03-10.17-20-18.mp4

Nothing has hung or crashed, both editors and game windows are still open, and the timer scripts are continuing to print out to the console each hour.

[matheusmdx]

@gelvinp Could you create a new issue? As you have the same error but don't crash like this issue.