[BUG] Crash after logging out

[witchlliee]

Everytime I log out of Jay started by UWSM, the greeter will just crash, it appears for a sec and then crash.

Details

2026-07-16 22:24:50.449 [info] [greeter-window] configured 1280x720 logical (scale=2.00) 2026-07-16 22:24:50.449 [info] [greeter-window] configured 1280x720 logical (scale=2.00) 2026-07-16 22:24:50.449 [info] [greeter-window] configured 1280x720 logical (scale=2.00) 2026-07-16 22:24:50.449 [info] [greeter-window] configured 1280x720 logical (scale=2.00) 2026-07-16 22:24:50.514 [debug] [render] scene draw took 56.9ms (1280x720 logical, 2560x1440 buffer) 2026-07-16 22:24:50.514 [debug] [render] scene draw took 56.9ms (1280x720 logical, 2560x1440 buffer) 2026-07-16 22:24:50.578 [debug] [render] renderScene took 121.1ms total 2026-07-16 22:24:50.578 [debug] [render] renderScene took 121.1ms total 2026-07-16 22:24:50.578 [info] [greeter-window] presented first frame 1280x720 logical (2560x1440 buffer, scale=2.00) 2026-07-16 22:24:50.578 [info] [greeter-window] presented first frame 1280x720 logical (2560x1440 buffer, scale=2.00) 00:00:01.023 [INFO] [../noctalia-greeter/src/compositor/noctalia_compositor.c:1656] greeter surface mapped on DP-2 2026-07-16 22:24:50.581 [info] [greeter-window] presented first frame 1280x720 logical (2560x1440 buffer, scale=2.00) 2026-07-16 22:24:50.581 [info] [greeter-window] presented first frame 1280x720 logical (2560x1440 buffer, scale=2.00) 2026-07-16 22:24:50.581 [info] [greeter] syncOutputWindows: 2 target output(s), 2 view(s) 2026-07-16 22:24:50.581 [info] [greeter] syncOutputWindows: 2 target output(s), 2 view(s) 00:00:01.026 [INFO] [../noctalia-greeter/src/compositor/noctalia_compositor.c:1656] greeter surface mapped on DP-1 2026-07-16 22:24:50.582 [info] [greeter] greeter initialized (2 view(s)) 2026-07-16 22:24:50.582 [info] [greeter] greeter initialized (2 view(s)) 2026-07-16 22:24:50.582 [info] [logind-resume] watching logind PrepareForSleep to restart greeter on resume 2026-07-16 22:24:50.582 [info] [logind-resume] watching logind PrepareForSleep to restart greeter on resume 2026-07-16 22:24:50.582 [info] [greeter] syncOutputWindows: 2 target output(s), 2 view(s) 2026-07-16 22:24:50.582 [info] [greeter] syncOutputWindows: 2 target output(s), 2 view(s) 2026-07-16 22:24:50.582 [info] [greeter-window] configured 2276x1280 logical (scale=1.12) 2026-07-16 22:24:50.582 [info] [greeter-window] configured 2276x1280 logical (scale=1.12) 2026-07-16 22:24:50.594 [info] [greeter] syncOutputWindows: 2 target output(s), 2 view(s) 2026-07-16 22:24:50.594 [info] [greeter] syncOutputWindows: 2 target output(s), 2 view(s) 2026-07-16 22:24:50.599 [info] [greeter-window] configured 2259x1271 logical (scale=1.13) 2026-07-16 22:24:50.599 [info] [greeter-window] configured 2259x1271 logical (scale=1.13) 2026-07-16 22:24:50.606 [info] [greeter-window] configured 2256x1269 logical (scale=1.13) 2026-07-16 22:24:50.606 [info] [greeter-window] configured 2256x1269 logical (scale=1.13) 00:00:05.222 [ERROR] [backend/drm/atomic.c:82] connector DP-2: Atomic commit failed: Invalid argument 00:00:05.222 [ERROR] [../noctalia-greeter/src/compositor/noctalia_compositor.c:765] failed to commit output DP-2 00:00:05.222 [ERROR] [backend/drm/atomic.c:82] connector DP-1: Atomic commit failed: Invalid argument 00:00:05.222 [ERROR] [../noctalia-greeter/src/compositor/noctalia_compositor.c:765] failed to commit output DP-1 00:00:08.904 [INFO] [libseat] [libseat/backend/logind.c:358] Disabling seat 00:00:08.904 [INFO] [backend/drm/backend.c:112] DRM FD paused 00:00:08.904 [INFO] [../noctalia-greeter/src/compositor/noctalia_compositor.c:651] output_layout: 'DP-1' not connected 00:00:08.905 [INFO] [../noctalia-greeter/src/compositor/noctalia_compositor.c:683] greeter output: DP-2 at (0,0) (configured DP-2:0,0; effective 2276x1280) 00:00:08.905 [INFO] [../noctalia-greeter/src/compositor/noctalia_compositor.c:1071] warped cursor to center of DP-2 (1138, 640) 00:00:08.905 [ERROR] [backend/drm/drm.c:1385] connector DP-1: Failed to disable CRTC 430 00:00:08.905 [INFO] [../noctalia-greeter/src/compositor/noctalia_compositor.c:651] output_layout: 'DP-2' not connected 00:00:08.905 [INFO] [../noctalia-greeter/src/compositor/noctalia_compositor.c:651] output_layout: 'DP-1' not connected 00:00:08.905 [ERROR] [backend/drm/drm.c:1385] connector DP-2: Failed to disable CRTC 435 2026-07-16 22:24:58.463 [info] [seat] keyboard: keymap loaded 2026-07-16 22:24:58.463 [info] [seat] keyboard: keymap loaded 2026-07-16 22:24:58.463 [info] [seat] keyboard: released 2026-07-16 22:24:58.463 [info] [seat] keyboard: released

[Ly-sec]

Hey @witchlliee , sorry for the late reply I did push a potential fix however I do have some questions.
Does the compositor actually exit, or is it a black screen while the process stays up?
coredumpctl list noctalia-greeter-compositor (or greeter) right after a repro, any crash dump?
What’s in greeter.toml for outputs? ([output].layout, pinned name, scale)
Does it happen without UWSM? (e.g. plain Jay / another compositor logout)

[witchlliee]

Hey @witchlliee , sorry for the late reply I did push a potential fix however I do have some questions. Does the compositor actually exit, or is it a black screen while the process stays up? coredumpctl list noctalia-greeter-compositor (or greeter) right after a repro, any crash dump? What’s in greeter.toml for outputs? ([output].layout, pinned name, scale) Does it happen without UWSM? (e.g. plain Jay / another compositor logout)

Hello. Sorry for the late reply as well. It's not happening anymore. When the bug was happening tho it did only happened with UWSM, yeah.

[witchlliee]

It still happens with UWSM. I guess it wasn' t solved. It only happens with UWSM.

noctalia-greeter.log

The log doesn't seems to show anything useful tho. UWSM cursed, I guess