Hyprlock freezes after FIFO commit when using egl-wayland2

[tekstryder]

Hyprland version

Hyprland 0.52.0 built from branch main at commit 522edc87126a48f3ce4891747b6a92a22385b1e7 dirty (meson: fix version.h install location).
Date: Fri Nov 7 14:08:40 2025
Tag: v0.52.0-1-g522edc871, commits: 6560

Libraries:
Hyprgraphics: built against 0.3.0, system has 0.3.0
Hyprutils: built against 0.10.1, system has 0.10.1
Hyprcursor: built against 0.1.13, system has 0.1.13
Hyprlang: built against 0.6.3, system has 0.6.3
Aquamarine: built against 0.9.5, system has 0.9.5

flags set:
no xwayland

Regression

Yes

Describe the bug

Attempting to start Hyprlock (both tagged 0.9.2 and latest git) via either a keybind or idle timeout results in Hyprland freezing.

Not a crash per se, but session can only be terminated from another TTY.

If I try to additionally launch with WAYLAND_DEBUG=1 the session does not freeze, but Hyprlock does exactly nothing:

[LOG] Keybind triggered, calling dispatcher (64, , 108, exec)
[LOG] Executing hyprlock
[LOG] Process Created with pid 125707
[ 359122.036] wl_display#1.get_registry(new id wl_registry#2)
[ 359122.044]  -> wl_registry#2.global(1, "wl_seat", 9)
[ 359122.046]  -> wl_registry#2.global(2, "wl_data_device_manager", 3)
[ 359122.047]  -> wl_registry#2.global(3, "wl_compositor", 6)
[ 359122.049]  -> wl_registry#2.global(4, "wl_subcompositor", 1)
[ 359122.050]  -> wl_registry#2.global(5, "wl_shm", 1)
[ 359122.050]  -> wl_registry#2.global(6, "wp_viewporter", 1)
[ 359122.051]  -> wl_registry#2.global(7, "wp_tearing_control_manager_v1", 1)
[ 359122.052]  -> wl_registry#2.global(8, "wp_fractional_scale_manager_v1", 1)
[ 359122.053]  -> wl_registry#2.global(9, "zxdg_output_manager_v1", 3)
[ 359122.054]  -> wl_registry#2.global(10, "wp_cursor_shape_manager_v1", 1)
[ 359122.055]  -> wl_registry#2.global(11, "zwp_idle_inhibit_manager_v1", 1)
[ 359122.056]  -> wl_registry#2.global(12, "zwp_relative_pointer_manager_v1", 1)
[ 359122.056]  -> wl_registry#2.global(13, "zxdg_decoration_manager_v1", 1)
[ 359122.057]  -> wl_registry#2.global(14, "wp_alpha_modifier_v1", 1)
[ 359122.059]  -> wl_registry#2.global(15, "zwlr_gamma_control_manager_v1", 1)
[ 359122.059]  -> wl_registry#2.global(16, "ext_foreign_toplevel_list_v1", 1)
[ 359122.060]  -> wl_registry#2.global(17, "zwp_pointer_gestures_v1", 3)
[ 359122.061]  -> wl_registry#2.global(18, "zwlr_foreign_toplevel_manager_v1", 3)
[ 359122.062]  -> wl_registry#2.global(19, "zwp_keyboard_shortcuts_inhibit_manager_v1", 1)
[ 359122.063]  -> wl_registry#2.global(20, "zwp_text_input_manager_v1", 1)
[ 359122.064]  -> wl_registry#2.global(21, "zwp_text_input_manager_v3", 1)
[ 359122.065]  -> wl_registry#2.global(22, "zwp_pointer_constraints_v1", 1)
[ 359122.066]  -> wl_registry#2.global(23, "zwlr_output_power_manager_v1", 1)
[ 359122.067]  -> wl_registry#2.global(24, "xdg_activation_v1", 1)
[ 359122.067]  -> wl_registry#2.global(25, "ext_idle_notifier_v1", 2)
[ 359122.068]  -> wl_registry#2.global(26, "hyprland_lock_notifier_v1", 1)
[ 359122.069]  -> wl_registry#2.global(27, "ext_session_lock_manager_v1", 1)
[ 359122.070]  -> wl_registry#2.global(28, "zwp_input_method_manager_v2", 1)
[ 359122.071]  -> wl_registry#2.global(29, "zwp_virtual_keyboard_manager_v1", 1)
[ 359122.072]  -> wl_registry#2.global(30, "zwlr_virtual_pointer_manager_v1", 2)
[ 359122.072]  -> wl_registry#2.global(31, "zwlr_output_manager_v1", 4)
[ 359122.073]  -> wl_registry#2.global(32, "org_kde_kwin_server_decoration_manager", 1)
[ 359122.074]  -> wl_registry#2.global(33, "hyprland_focus_grab_manager_v1", 1)
[ 359122.076]  -> wl_registry#2.global(34, "zwp_tablet_manager_v2", 1)
[ 359122.076]  -> wl_registry#2.global(35, "zwlr_layer_shell_v1", 5)
[ 359122.077]  -> wl_registry#2.global(36, "wp_presentation", 2)
[ 359122.078]  -> wl_registry#2.global(37, "xdg_wm_base", 7)
[ 359122.079]  -> wl_registry#2.global(38, "zwlr_data_control_manager_v1", 2)
[ 359122.080]  -> wl_registry#2.global(39, "zwp_primary_selection_device_manager_v1", 1)
[ 359122.080]  -> wl_registry#2.global(40, "xwayland_shell_v1", 1)
[ 359122.081]  -> wl_registry#2.global(41, "zwlr_screencopy_manager_v1", 3)
[ 359122.082]  -> wl_registry#2.global(42, "hyprland_toplevel_export_manager_v1", 2)
[ 359122.083]  -> wl_registry#2.global(43, "hyprland_toplevel_mapping_manager_v1", 1)
[ 359122.084]  -> wl_registry#2.global(44, "hyprland_global_shortcuts_manager_v1", 1)
[ 359122.085]  -> wl_registry#2.global(45, "xdg_wm_dialog_v1", 1)
[ 359122.085]  -> wl_registry#2.global(46, "wp_single_pixel_buffer_manager_v1", 1)
[ 359122.086]  -> wl_registry#2.global(47, "wp_security_context_manager_v1", 1)
[ 359122.087]  -> wl_registry#2.global(48, "hyprland_ctm_control_manager_v1", 2)
[ 359122.088]  -> wl_registry#2.global(49, "hyprland_surface_manager_v1", 2)
[ 359122.089]  -> wl_registry#2.global(50, "wp_content_type_manager_v1", 1)
[ 359122.090]  -> wl_registry#2.global(51, "xdg_toplevel_tag_manager_v1", 1)
[ 359122.090]  -> wl_registry#2.global(52, "xdg_system_bell_v1", 1)
[ 359122.091]  -> wl_registry#2.global(53, "ext_workspace_manager_v1", 1)
[ 359122.092]  -> wl_registry#2.global(54, "ext_data_control_manager_v1", 1)
[ 359122.093]  -> wl_registry#2.global(55, "wp_pointer_warp_v1", 1)
[ 359122.094]  -> wl_registry#2.global(56, "wp_fifo_manager_v1", 1)
[ 359122.095]  -> wl_registry#2.global(57, "wp_commit_timing_manager_v1", 1)
[ 359122.095]  -> wl_registry#2.global(58, "wp_color_manager_v1", 1)
[ 359122.096]  -> wl_registry#2.global(59, "wp_drm_lease_device_v1", 1)
[ 359122.097]  -> wl_registry#2.global(60, "wp_linux_drm_syncobj_manager_v1", 1)
[ 359122.098]  -> wl_registry#2.global(61, "wl_drm", 2)
[ 359122.099]  -> wl_registry#2.global(62, "zwp_linux_dmabuf_v1", 5)
[ 359122.100]  -> wl_registry#2.global(63, "wl_output", 4)
[ 359122.101]  -> wl_registry#2.global(64, "wl_output", 4)
[ 359122.102] wl_display#1.sync(new id wl_callback#3)
[ 359122.105]  -> wl_callback#3.done(4)
[ 359122.106]  -> wl_display#1.delete_id(3)
[ 360927.754] zwlr_gamma_control_v1#3.set_gamma(fd 109)
[LOG] [CGammaControl] setGamma for DP-1
[LOG] [CGammaControl] setting to monitor DP-1
[ 360927.825] zwlr_gamma_control_v1#7.set_gamma(fd 112)
[LOG] [CGammaControl] setGamma for DVI-D-1
[LOG] [CGammaControl] setting to monitor DVI-D-1
[ 360927.866] wl_display#1.sync(new id wl_callback#8)
[ 360927.869]  -> wl_callback#8.done(4)
[ 360927.871]  -> wl_display#1.delete_id(8)
[LOG] Keybind triggered, calling dispatcher (65, , 101, exit)
[LOG] Hyprland is stopping!
[LOG] Kicked off the event loop! :(

Reproduction steps

1. Launch Hyprland
2. Launch Hyprlock
3. Freeze

System info and config

hyprsysteminfo.txt
hyprland-trace.log

EDIT: I captured the freeze with both AQ and HYPRLAND traces active in the log above.

[tekstryder]

Also, it's a very recent regression.

I was previously on git @8e9add2 without issue.

I'll bisect if requested, but them damn breaking changes make building recent previous commits a pita.

EDIT: If I disable hyprlock animations, it starts to display the lock screen before the session freezes.

hyprlock config is pretty vanilla. attached anyhow...

hyprlock.txt

[tekstryder]

I totally missed hyprlock dumping core each time hyprland freezes...

Nov 09 12:50:38 boomshanka systemd-coredump[125249]: [🡕] Process 125247 (hyprlock) of user 1000 dumped core.
                                                     
                Stack trace of thread 125247:
                #0  0x00007f9ce1600e08 n/a (libwayland-client.so.0 + 0x3e08)
                #1  0x00007f9ce1603afe wl_proxy_marshal_array_flags (libwayland-client.so.0 +>
                #2  0x00007f9ce1603fd3 wl_proxy_marshal_flags (libwayland-client.so.0 + 0x6fd>
                #3  0x00007f9cdea81b9f n/a (libnvidia-egl-wayland2.so.1 + 0x6b9f)
                #4  0x00007f9cdea84c75 n/a (libnvidia-egl-wayland2.so.1 + 0x9c75)
                #5  0x00007f9cdea814df n/a (libnvidia-egl-wayland2.so.1 + 0x64df)
                #6  0x00007f9cdeb50080 n/a (libEGL_nvidia.so.0 + 0xb4080)
                #7  0x00007f9cdeaeb5af n/a (libEGL_nvidia.so.0 + 0x4f5af)
                #8  0x00007f9ce162825e n/a (libEGL.so.1 + 0x625e)
                #9  0x00005592caef967a n/a (/usr/bin/hyprlock + 0x2767a)
                #10 0x00007f9ce0c27675 n/a (libc.so.6 + 0x27675)
                #11 0x00007f9ce0c27729 __libc_start_main (libc.so.6 + 0x27729)
                #12 0x00005592caefcaa5 n/a (/usr/bin/hyprlock + 0x2aaa5)
                ELF object binary architecture: AMD x86-64

#0  0x00007f0b1ccb5e08 in wl_closure_print (closure=closure@entry=0x55d0047fcae0, target=target@entry=0x55d0047fca00,              
    send=send@entry=1, discarded=discarded@entry=0, n_parse=n_parse@entry=0x0, queue_name=<optimized out>)
    at ../wayland-1.24.0/src/connection.c:1572
1572				fprintf(f, "new id %s#",
(gdb) bt full
#0  0x00007f0b1ccb5e08 in wl_closure_print (closure=closure@entry=0x55d0047fcae0, target=target@entry=0x55d0047fca00, 
    send=send@entry=1, discarded=discarded@entry=0, n_parse=n_parse@entry=0x0, queue_name=<optimized out>)
    at ../wayland-1.24.0/src/connection.c:1572
        i = 3
        arg = {type = WL_ARG_NEW_ID, nullable = 0}
        signature = 0x55cff8e78746 ""
        tp = {tv_sec = 1762710771, tv_nsec = 975424293}
        time = <optimized out>
        nval = 3
        f = 0x55d0047fcbc0
        buffer = 0x7f0b1c582240 <ffi_type_uint32> "\004"
        buffer_length = 139685696905888
#1  0x00007f0b1ccb8afe in wl_proxy_marshal_array_flags (proxy=0x55d0047fca00, opcode=opcode@entry=0, 
    interface=interface@entry=0x7f0b1a6b9a40, version=version@entry=4, flags=flags@entry=0, args=args@entry=0x7ffd5f1acb90)
    at ../wayland-1.24.0/src/wayland-client.c:938
        queue = <optimized out>
        queue_name = <optimized out>
        closure = 0x55d0047fcae0
        new_proxy = <optimized out>
        message = 0x55cff8e9da50
        disp = <optimized out>
#2  0x00007f0b1ccb8fd3 in wl_proxy_marshal_flags (proxy=<optimized out>, opcode=0, interface=0x7f0b1a6b9a40, version=4, flags=0)
    at ../wayland-1.24.0/src/wayland-client.c:863
        args = {{i = 62, u = 62, f = 62, s = 0x55d00000003e <error: Cannot access memory at address 0x55d00000003e>, 
            o = 0x55d00000003e, n = 62, a = 0x55d00000003e, h = 62}, {i = 443240116, u = 443240116, f = 443240116, 
            s = 0x7f0b1a6b4eb4 "zwp_linux_dmabuf_v1", o = 0x7f0b1a6b4eb4, n = 443240116, a = 0x7f0b1a6b4eb4, h = 443240116}, {
            i = 4, u = 4, f = 4, s = 0x55cf00000004 <error: Cannot access memory at address 0x55cf00000004>, o = 0x55cf00000004, 
            n = 4, a = 0x55cf00000004, h = 4}, {i = 75484800, u = 75484800, f = 75484800, s = 0x55d0047fce80 "@\232k\032\v\177", 
            o = 0x55d0047fce80, n = 75484800, a = 0x55d0047fce80, h = 75484800}, {i = 75501640, u = 75501640, f = 75501640, 
            s = 0x55d004801048 "\370\221\304\n\342\257tn", o = 0x55d004801048, n = 75501640, a = 0x55d004801048, h = 75501640}, {
            i = 75501632, u = 75501632, f = 75501632, s = 0x55d004801040 "1Y\200Y\325U", o = 0x55d004801040, n = 75501632, 
            a = 0x55d004801040, h = 75501632}, {i = 1595591696, u = 1595591696, f = 1595591696, 
            s = 0x7ffd5f1acc10 "`\314\032_\375\177", o = 0x7ffd5f1acc10, n = 1595591696, a = 0x7ffd5f1acc10, h = 1595591696}, {
            i = 483090874, u = 483090874, f = 483090874, s = 0x7f0b1ccb61ba <destroy_queued_closure+186> "H\213E\310dH+\004%(", 
            o = 0x7f0b1ccb61ba <destroy_queued_closure+186>, n = 483090874, a = 0x7f0b1ccb61ba <destroy_queued_closure+186>, 
            h = 483090874}, {i = 117, u = 117, f = 117, s = 0x75 <error: Cannot access memory at address 0x75>, o = 0x75, 
            n = 117, a = 0x75, h = 117}, {i = 1365572864, u = 1365572864, f = 1365572864, 
            s = 0x3d6d4f055164fd00 <error: Cannot access memory at address 0x3d6d4f055164fd00>, o = 0x3d6d4f055164fd00, 
            n = 1365572864, a = 0x3d6d4f055164fd00, h = 1365572864}, {i = 1595591776, u = 1595591776, f = 1595591776, 
            s = 0x7ffd5f1acc60 "\340\314\032_\375\177", o = 0x7ffd5f1acc60, n = 1595591776, a = 0x7ffd5f1acc60, h = 1595591776}, {
            i = 74177552, u = 74177552, f = 74177552, s = 0x55d0046bdc10 "@\337\351\370\317U", o = 0x55d0046bdc10, n = 74177552, 
            a = 0x55d0046bdc10, h = 74177552}, {i = 65, u = 65, f = 65, s = 0x41 <error: Cannot access memory at address 0x41>, 
            o = 0x41, n = 65, a = 0x41, h = 65}, {i = 0, u = 0, f = 0, s = 0x0, o = 0x0, n = 0, a = 0x0, h = 0}, {i = 75483584, 
            u = 75483584, f = 75483584, s = 0x55d0047fc9c0 "\300\311\177\004\320U", o = 0x55d0047fc9c0, n = 75483584, 
            a = 0x55d0047fc9c0, h = 75483584}, {i = 0, u = 0, f = 0, s = 0x0, o = 0x0, n = 0, a = 0x0, h = 0}, {i = 1595591776, 
            u = 1595591776, f = 1595591776, s = 0x7ffd5f1acc60 "\340\314\032_\375\177", o = 0x7ffd5f1acc60, n = 1595591776, 
            a = 0x7ffd5f1acc60, h = 1595591776}, {i = 483096344, u = 483096344, f = 483096344, 
            s = 0x7f0b1ccb7718 <wl_display_dispatch_queue_pending+152> "H\203\304\030D\211\340[A\\A]A^A_]\303D\211\342\017\037", 
            o = 0x7f0b1ccb7718 <wl_display_dispatch_queue_pending+152>, n = 483096344, 
            a = 0x7f0b1ccb7718 <wl_display_dispatch_queue_pending+152>, h = 483096344}, {i = 4, u = 4, f = 4, 
            s = 0x1000100000004 <error: Cannot access memory at address 0x1000100000004>, o = 0x1000100000004, n = 4, 
            a = 0x1000100000004, h = 4}, {i = 1365572864, u = 1365572864, f = 1365572864, 
            s = 0x3d6d4f055164fd00 <error: Cannot access memory at address 0x3d6d4f055164fd00>, o = 0x3d6d4f055164fd00, 
            n = 1365572864, a = 0x3d6d4f055164fd00, h = 1365572864}}
        ap = {{gp_offset = 48, fp_offset = 48, overflow_arg_area = 0x7ffd5f1acd38, reg_save_area = 0x7ffd5f1acc40}}
#3  0x00007f0b1a6aab9f in ?? () from /usr/lib/libnvidia-egl-wayland2.so.1
No symbol table info available.
#4  0x00007f0b1a6adc75 in ?? () from /usr/lib/libnvidia-egl-wayland2.so.1
No symbol table info available.
#5  0x00007f0b1a6aa4df in ?? () from /usr/lib/libnvidia-egl-wayland2.so.1
No symbol table info available.
#6  0x00007f0b1a171080 in ?? () from /usr/lib/libEGL_nvidia.so.0
No symbol table info available.
#7  0x00007f0b1a10c5af in ?? () from /usr/lib/libEGL_nvidia.so.0
No symbol table info available.
#8  0x00007f0b1ccdd25e in GetPlatformDisplayCommon (platform=12760, native_display=0x55d0046bdc10, attrib_list=0x0, 
    funcName=0x7f0b1cce3d8b "eglGetPlatformDisplayEXT") at ../libglvnd-v1.7.0/src/EGL/libegl.c:324
        dpy = <optimized out>
        vendor = 0x55d0046bf070
        dpyInfo = 0x0
        errorCode = 12288
        anyVendorSuccess = <optimized out>
        vendorList = 0x7f0b1cce83b0 <__eglVendorList>
#9  0x000055cff8dfa67a in ?? ()
No symbol table info available.
#10 0x00007f0b1c227675 in __libc_start_call_main (main=main@entry=0x55cff8df9b00, argc=argc@entry=1, 
    argv=argv@entry=0x7ffd5f1ad4a8) at ../sysdeps/nptl/libc_start_call_main.h:58
        self = <optimized out>
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 5418452604129675842, 140726199047336, 1, 139685705158656, 94351722659480, 
                5418452603938835010, 5394946895517747778}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x7ffd5f1ad4a8}, 
            data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#11 0x00007f0b1c227729 in __libc_start_main_impl (main=0x55cff8df9b00, argc=1, argv=0x7ffd5f1ad4a8, init=<optimized out>, 
    fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd5f1ad498) at ../csu/libc-start.c:360
No locals.
#12 0x000055cff8dfdaa5 in ?? ()

[tekstryder]

No change with latest git, nor would I really expect any.

I suspect 8e8bfbb but haven't proven it yet.

Merge conflict when it's reverted. I can only go back to before that commit when all was well.

~ ❯ hyprctl version
Hyprland 0.52.0 built from branch main at commit 2931184921e6d2c4b711bdbcc808459311c305bd dirty (CI/release: populate git info ( 12247)).
Date: Sun Nov 9 15:50:56 2025
Tag: v0.52.0-4-g293118492, commits: 6563

Libraries:
Hyprgraphics: built against 0.3.0, system has 0.3.0
Hyprutils: built against 0.10.1, system has 0.10.1
Hyprcursor: built against 0.1.13, system has 0.1.13
Hyprlang: built against 0.6.3, system has 0.6.3
Aquamarine: built against 0.9.5, system has 0.9.5

flags set:
no xwayland

[tekstryder]

Seems nVidia-specific. Yay.

Issue does not occur on my old intel laptop with iGPU after building hyprland v0.52.1

[tekstryder]

Ended up being caused by egl-wayland2 at latest git NVIDIA/egl-wayland2@e16cb0f.

Cannot reproduce after removing egl-wayland2 and replacing with original egl-wayland 1.1.20

Filed an issue with nVidia:

• Hyprlock freezes with latest hyprland NVIDIA/egl-wayland2#19

Closing this discussion.

[tekstryder]

Reopening for further troubleshooting
Cc: @gulafaran

[gulafaran]

and this unlocks it?

diff --git a/src/protocols/Fifo.cpp b/src/protocols/Fifo.cpp
index 63ce8579..2b949a28 100644
--- a/src/protocols/Fifo.cpp
+++ b/src/protocols/Fifo.cpp
@@ -188,5 +188,8 @@ void CFifoProtocol::onMonitorPresent(PHLMONITOR m) {
                 continue;
             }
         }
+
+        // hm what do we do here? no matching output found and yet its mapped. lock surface?
+        fifo->presented();
     }
 }

[tekstryder]

Progress my man! Nice.

Hyprlock "works". It allows me to unlock!

But, the animations are janky. Sometimes not all character bullets appear, and when they do they lag behind my typing.

I tested both with and without the egl-wayland2 patch... cuz why not both... but no difference.

[tekstryder]

Even with hyprlock animations disabled input is still delayed by up to a few seconds, including the unlock after entering pw.

I also tried with my secondary display disabled, but no difference.

I know you're coding blind on this one... odd that we're using the same library with different results.

/srv/build/egl-wayland2 ❯ nvidia-smi
Sun Nov 23 09:40:26 2025       
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 580.105.08             Driver Version: 580.105.08     CUDA Version: 13.0     |
+-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA GeForce GTX 1050 Ti     Off |   00000000:01:00.0  On |                  N/A |
| 31%   33C    P0            N/A  /   75W |    1215MiB /   4096MiB |      2%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+

+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI              PID   Type   Process name                        GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|    0   N/A  N/A         1197370      G   hyprland                                401MiB |
|    0   N/A  N/A         1197521      G   ...rack-uuid=3190708988185955192        306MiB |
|    0   N/A  N/A         1198567    C+G   ptyxis                                   69MiB |
|    0   N/A  N/A         1199153    C+G   nautilus                                133MiB |
+-----------------------------------------------------------------------------------------+

Not sure if it would be hardware, driver, or some other diff between our systems.

[gulafaran]

Even with hyprlock animations disabled input is still delayed by up to a few seconds, including the unlock after entering pw.

I also tried with my secondary display disabled, but no difference.

I know you're coding blind on this one... odd that we're using the same library with different results.

/srv/build/egl-wayland2 ❯ nvidia-smi
Sun Nov 23 09:40:26 2025       
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 580.105.08             Driver Version: 580.105.08     CUDA Version: 13.0     |
+-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA GeForce GTX 1050 Ti     Off |   00000000:01:00.0  On |                  N/A |
| 31%   33C    P0            N/A  /   75W |    1215MiB /   4096MiB |      2%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+

+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI              PID   Type   Process name                        GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|    0   N/A  N/A         1197370      G   hyprland                                401MiB |
|    0   N/A  N/A         1197521      G   ...rack-uuid=3190708988185955192        306MiB |
|    0   N/A  N/A         1198567    C+G   ptyxis                                   69MiB |
|    0   N/A  N/A         1199153    C+G   nautilus                                133MiB |
+-----------------------------------------------------------------------------------------+

Not sure if it would be hardware, driver, or some other diff between our systems.

Im grocery shopping atm, il dig a bit later. but yeah i dont get what the difference is between yours and mine, and feels like a lot more people should hit it.

[gulafaran]

Still feels like you are using new_render_scheduling 😄

[tekstryder]

Ha! Well it's not in my config, but I can explicitly set it to false in case there's voodoo involved.

Re:replies while shopping... I'll be out myself most of the rest of the day.

EDIT:

For aforementioned voodoo reasons, I also tried...

opengl {
    nvidia_anti_flicker = false
}

render {
    new_render_scheduling = false
}

...to no avail.

[tekstryder]

feels like a lot more people should hit it.

I mean the repo has only 23 stars.

Just how many people who are using an unreleased nVidia Wayland library are also running Hyprland+Hyprlock?

Keep in mind this is not an issue when using the stock egl-wayland library.

Do you have both libraries installed side-by-side? They can coexist.

That could be the diff. I do NOT. I'm all in with egl-wayland2 installed by itself for like 4 months now.

[gulafaran]

seems something about that is broken, just checked. hyprlock is still using egl-wayland here

                #10 0x00007efffec93c4a wl_display_roundtrip_queue (libwayland-client.so.0 + 0x9c4a)
                #11 0x00007efff6a4405e n/a (libnvidia-egl-wayland.so.1 + 0xd05e)
                #12 0x00007effecd71080 n/a (libEGL_nvidia.so.0 + 0xb4080)
                #13 0x00007effecd0c5af n/a (libEGL_nvidia.so.0 + 0x4f5af)
                #14 0x00007efffecb853d n/a (libEGL.so.1 + 0x853d)
                #15 0x000055b7be2fc560 n/a (/usr/bin/hyprlock + 0x8d560)

cool i bet i can reproduce by forcing it to 2 then

[gulafaran]

yeah whatever eglexternalplatform is doing its not prioritizing as they hope. changing the egl-wayland json to point to egl-wayland2 im not only loading the right lib i can also reproduce both @tekstryder earlier coredumps mentioned on the nvidia bugreport but also the hyprlock freeze. yay and also 😭

[tekstryder]

i have egl-wayland, but egl-wayland2 should be used as priority as explained in the readme

Last I knew that was broken per:
• https://forums.developer.nvidia.com/t/tooltip-distortion-on-kde-plasma/312358/15?u=tekstryder

To prefer v2 need to use:

__EGL_EXTERNAL_PLATFORM_CONFIG_FILENAMES=/usr/share/egl/egl_external_platform.d/09_nvidia_wayland2.json:/usr/share/egl/egl_external_platform.d/15_nvidia_gbm.json

Not sure if it ever got fixed in the nVidia driver. Sound like perhaps not per your and @gulafaran's experiences.

As I mention in the concurrent egl-wayland2 issue thread, I just build nvidia-utils modified to drop the egl-wayland dep, among other changes... e.g. I don't install any of the driver's xorg-related components, as I build my compositors with Xwayland support disabled.

[fxzzi]

yeah, I used the env var. Surprised this wasn't fixed in the driver yet since they knew the issue existed in July. Maybe 585 will fix the priority order.

[tekstryder]

Maybe 585...

I'll never know haha. GTX 1050 Ti here, so 580's the end of the line for me.
I'll just keep packaging it myself in perpetuity.

[gulafaran]

#12448

[tekstryder]

Quickly checking with this PR atop latest git...

Fixes the immediate issue of Hyprlock freezing when using egl-wayland2. Thanks!

Hyprland 0.52.0 built from branch main at commit 3d7ea9c02face0d6c5d9963030a06705268979ba dirty (CrashReporter.cpp: fix stderr conflict ( 12440)).
Date: Mon Nov 24 15:11:15 2025
Tag: v0.52.0-85-g3d7ea9c02, commits: 6644

Libraries:
Hyprgraphics: built against 0.4.0, system has 0.4.0
Hyprutils: built against 0.10.3, system has 0.10.3
Hyprcursor: built against 0.1.13, system has 0.1.13
Hyprlang: built against 0.6.6, system has 0.6.6
Aquamarine: built against 0.10.0, system has 0.10.0

flags set:
no xwayland


~ ❯ pacman -Qs egl-wayland2
local/egl-wayland2 1.0.0.rc.r45.g0c15809-1

requires some testing that i havent missed some oddball case tho

I'll leave this discussion thread unanswered till the PR merges into main.

[tekstryder]

Now testing the simpler version of the PR @ 948437d

...with egl-wayland2 @ 3e5b643

So far, so good.

[tekstryder]

Fix is merged.

Marking as answered.