Displaylink 17 + Mac OS 27 = WindowServer crashes

[ckais]

I cannot log into my M4 Pro MBP running Golden Gate with my Displaylink dock attached after updating to Displaylink 17.

The WindowServer immediately crashes and I'm sent back to the login screen.

I have uninstalled & reinstalled the Displaylink software several times, making sure to follow the permissions instructions.

Dump below:

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Translated Report (Full Report Below)
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Process: WindowServer [6557]
Path: /System/Library/PrivateFrameworks/SkyLight.framework/Versions/A/Resources/WindowServer
Identifier: WindowServer
Version: 600.00 (???)
Code Type: ARM-64 (Native)
Role: Graphics
Parent Process: launchd [1]
Coalition: com.apple.WindowServer [381]
User ID: 88

Date/Time: 2026-09-22 16:36:15.2849 -0400
Launch Time: 2026-09-22 16:36:00.3017 -0400
Hardware Model: Mac16,8
OS Version: macOS 27.0 (26A428)
Release Type: User

Crash Reporter Key: 1540672B-4190-9D0B-61F0-B9861EA792BB
Incident Identifier: 7FB37CDA-4BBF-4692-AB8A-C0C153CFA63F

Time Awake Since Boot: 1300 seconds

System Integrity Protection: enabled

Triggered by Thread: 0 ws_main_thread, Dispatch Queue: com.apple.main-thread

Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000

Termination Reason: Namespace SIGNAL, Code 6, Abort trap: 6
Terminating Process: WindowServer [6557]


Application Specific Information:
abort() called


Thread 0 Crashed:: ws_main_thread Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x18dcc9650 __pthread_kill + 8
1 libsystem_pthread.dylib 0x18dd0597c pthread_kill + 296
2 libsystem_c.dylib 0x18dc08458 abort + 148
3 SkyLight 0x19476ff14 WS:isplays::GenerateModeListForDisplay(WS:ispl ays::SLCADisplay*) + 16456
4 SkyLight 0x194911250 WS:isplays::SLCADisplay::reevaluate_modes(bool) + 308
5 SkyLight 0x1949097f8 WS:isplays::CAWSManager::refresh_display_modes(W S:isplays::SLCADisplay*) + 56
6 SkyLight 0x194930d54 invocation function for block in WS:isplays::CAWSManager:rocess_deferred_hotplu g_events() + 4164
7 BoardServices 0x1aa5363b4 invoke_blocks(__BSServiceMachHoist*, bool) + 236
8 SkyLight 0x19461f6d0 block_hoist_notification_handler(unsigned int, mach_msg_header_t*, void*) + 36
9 SkyLight 0x1945cf210 post_port_data + 300
10 SkyLight 0x1945cd9b8 CGXRunOneServicesPass + 1556
11 SkyLight 0x1945ce2a0 server_loop + 140
12 SkyLight 0x1945ce0e0 SLXServer + 1388
13 WindowServer 0x1029fc758 0x1029fc000 + 1880
14 dyld 0x18d92fe80 start + 6688

Thread 1:: com.apple.coreanimation.display.primary
0 libsystem_kernel.dylib 0x18dcc0c20 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x18dcd38e0 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x18dcc9a28 mach_msg_overwrite + 480
3 libsystem_kernel.dylib 0x18dcc0fac mach_msg + 24
4 CoreFoundation 0x18ddc6aec __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x18ddc5334 __CFRunLoopRun + 1172
6 CoreFoundation 0x18de9f82c _CFRunLoopRunSpecificWithOptions + 536
7 CoreFoundation 0x18de3d4c4 CFRunLoopRun + 64
8 QuartzCore 0x1987a66bc CA::WindowServer::IOMFBServer::thread_body(void*) + 448
9 QuartzCore 0x198495044 thread_fun(void*) + 32
10 libsystem_pthread.dylib 0x18dd05d00 _pthread_start + 136
11 libsystem_pthread.dylib 0x18dd00cec thread_start + 8

Thread 2:: com.apple.coreanimation.frameinfo.primary
0 libsystem_kernel.dylib 0x18dcc0c20 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x18dcd38e0 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x18dcc9a28 mach_msg_overwrite + 480
3 libsystem_kernel.dylib 0x18dcc0fac mach_msg + 24
4 CoreFoundation 0x18ddc6aec __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x18ddc5334 __CFRunLoopRun + 1172
6 CoreFoundation 0x18de9f82c _CFRunLoopRunSpecificWithOptions + 536
7 CoreFoundation 0x18de3d4c4 CFRunLoopRun + 64
8 QuartzCore 0x1987a695c CA::WindowServer::IOMFBServer::frame_info_thread_b ody(void*) + 448
9 QuartzCore 0x198495044 thread_fun(void*) + 32
10 libsystem_pthread.dylib 0x18dd05d00 _pthread_start + 136
11 libsystem_pthread.dylib 0x18dd00cec thread_start + 8

Thread 3:: com.apple.coreanimation.cursor.primary
0 libsystem_kernel.dylib 0x18dcc0c20 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x18dcd38e0 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x18dcc9a28 mach_msg_overwrite + 480
3 libsystem_kernel.dylib 0x18dcc0fac mach_msg + 24
4 CoreFoundation 0x18ddc6aec __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x18ddc5334 __CFRunLoopRun + 1172
6 CoreFoundation 0x18de9f82c _CFRunLoopRunSpecificWithOptions + 536
7 CoreFoundation 0x18de3d4c4 CFRunLoopRun + 64
8 QuartzCore 0x1987a6c24 CA::WindowServer::IOMFBServer::cursor_thread_body( void*) + 488
9 QuartzCore 0x198495044 thread_fun(void*) + 32
10 libsystem_pthread.dylib 0x18dd05d00 _pthread_start + 136
11 libsystem_pthread.dylib 0x18dd00cec thread_start + 8

Thread 4:: com.apple.coreanimation.display.external-0
0 libsystem_kernel.dylib 0x18dcc0c20 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x18dcd38e0 mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x18dcc9a28 mach_msg_overwrite + 480
3 libsystem_kernel.dylib 0x18dcc0fac mach_msg + 24
4 CoreFoundation 0x18ddc6aec __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x18ddc5334 __CFRunLoopRun + 1172
6 CoreFoundation 0x18de9f82c _CFRunLoopRunSpecificWithOptions + 536
7 CoreFoundation 0x18de3d4c4 CFRunLoopRun + 64
8 QuartzCore 0x1987a66bc CA::WindowServer::IOMFBServer::thread_body(void*) + 448
9 QuartzCore 0x198495044 thread_fun(void*) + 32
10 libsystem_pthread.dylib 0x18dd05d00 _pthread_start + 136
11 libsystem_pthread.dylib 0x18dd00cec thread_start + 8

....