listener function for opcode 2 of xdg_toplevel is NULL

[MY201314MY]

Afer I build my project, fhe following errors occurred:

listener function for opcode 2 of xdg_toplevel is NULL Aborted (core dumped)

My configuration is:

#define LV_WAYLAND_XDG_SHELL 1
#define LV_WAYLAND_TIMER_HANDLER 1

#define LV_LOG_LEVEL LV_LOG_LEVEL_WARN My runtime environment is

Linux mac 5.15.0-27-generic #28-Ubuntu SMP Thu Apr 14 04:55:28 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

And if I set LV_WAYLAND_WL_SHELL 1,following errors:

[Info] (0.000, +0) lv_init: begin (in lv_obj.c line #102) [Error] (0.000, +0) create_window: No shell available (in wayland.c line #1810) [Error] (0.000, +0) lv_wayland_create_window: failed to create wayland window (in wayland.c line #2313) [Warn] (0.000, +0) lv_disp_get_scr_act: no display registered to get its active screen (in lv_disp.c line #54) [Info] (0.000, +0) lv_obj_create: begin (in lv_obj.c line #206) [Warn] (0.000, +0) lv_obj_class_create_obj: No display created yet. No place to assign the new screen (in lv_obj_class.c line #58)

Segmentation fault (core dumped)

Did anyone have the same problem as me?

[kisvegabor]

I cc @simplejack-src who have added some major refactoring and improvements to the Wayland driver.

[ghost]

I've made a pull request for the first one (looks like the drivers missing an event handler for an event that was added to the XDG shell protocol in a later revision). The second one I'm not so sure about, it looks like wl_shell isn't supported by your compositor (however since our support of that shell is deprecated, I'm not too worried about that one).

[MY201314MY]

Thank you for your reply. I did a test with the patch, and it works with the following code:

int main() {  
    lv_init();
    lv_wayland_init();

    lv_disp_t * display = lv_wayland_create_window(H_RES, V_RES, "Window Title", NULL);

    lv_example_get_started_1();

    while (1) {
        lv_tick_inc(5);
        lv_task_handler();
        usleep(5*1000);
    }

    return 0;
}

But the following errors occured on the window after it runs about 30 seconds later:

"WIndow Title" is not responding. You may choose to wait a short while for it to continue or force the application to quit entirely.

[ghost]

I can't reproduce that (granted my compositor is Wayfire). Is your LVGL configuration correct? i.e. LV_WAYLAND_TIMER_HANDLER is not defined (since your using the Wayland driver in a polling setup)?

[stale[bot]]

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