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Bug 5427 - X_setInputfocus BadMatch 42
Summary: X_setInputfocus BadMatch 42
Status: ASSIGNED
Alias: None
Product: SDL
Classification: Unclassified
Component: video (show other bugs)
Version: 2.0.12
Hardware: x86_64 Linux
: P2 blocker
Assignee: Ryan C. Gordon
QA Contact: Sam Lantinga
URL:
Keywords: target-2.0.16
Depends on:
Blocks:
 
Reported: 2020-12-30 23:20 UTC by ghen_arcanum
Modified: 2021-01-12 17:24 UTC (History)
1 user (show)

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Description ghen_arcanum 2020-12-30 23:20:08 UTC 
Operating System: Void Linux

When starting the program, the new window blinks for a second then crashes with:

Pioneer:
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  42 (X_SetInputFocus)
  Serial number of failed request:  220
  Current serial number in output stream:  221

Grafx-sdl2 version:
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  42 (X_SetInputFocus)
  Serial number of failed request:  214
  Current serial number in output stream:  215

I came across this while compiling grafx2 for void linux. You can do three versions with it: normaly it uses sdl 1.2.x for compiling, which works fine. The X-version without sdl works fine too, just the sdl2 version doesn't work.

likewise every program using sdl2 crashes on my system.

I have quite a niche windowmanager, which is amiwm. But Gimp and Krita works totally fine with it. 

It seems that your competition had a similar problem:
https://github.com/SFML/SFML/issues/991
and there it was even linked to a bug here
https://bugzilla.libsdl.org/show_bug.cgi?id=2997
and it even says it is patched! Which is confusing.

What is going on? :) thx in advance
Comment 1 Ryan C. Gordon 2021-01-12 17:21:11 UTC 
Going to guess it's this code in X11_ShowWindow...

    if (!data->videodata->net_wm) {
        /* no WM means no FocusIn event, which confuses us. Force it. */
        X11_XSetInputFocus(display, data->xwindow, RevertToNone, CurrentTime);
        X11_XFlush(display);
    }

I'll try to reproduce over here.

--ryan.