I'm also getting this constant crashing while Macbook is asleep or crashing when woken. I'm running a MacBook Pro 15 Mid 2014 on Big Sur 11.2.1. I have an external display connected along with the external display USB driver but I've noticed crashing even when the display is not connected. language Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC_CRASH (SIGKILL) Exception Codes: 0x0000000000000000, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY Termination Reason: WATCHDOG, [0x1] monitoring timed out for service Termination Details: WATCHDOG, checkin with service: WindowServer returned not alive with context: is_alive_func returned unhealthy : WindowServer initialization not complete (post IOKitWaitQuiet) 80 seconds since last successful checkin, 7095 total successsful checkins since load, 40 seconds since last crashed by watchdogd, (1 induced crashes) Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 libsystem_kernel.dylib 0x00007fff2053b71a __open + 10 1 libsystem_kernel.dylib 0x00007fff20543b42 open + 209 2 com.apple.CoreFoundation 0x00007fff20602690 _CFReadBytesFromFile + 162 3 com.apple.CoreFoundation 0x00007fff20601ef8 CFURLCreateDataAndPropertiesFromResource + 488 4 com.apple.CoreFoundation 0x00007fff20601982 _CFBundleCopyInfoDictionaryInDirectoryWithVersion + 854 5 com.apple.CoreFoundation 0x00007fff206012ce _CFBundleRefreshInfoDictionaryAlreadyLocked + 111 6 com.apple.CoreFoundation 0x00007fff20601240 CFBundleGetInfoDictionary + 44 7 com.apple.CoreFoundation 0x00007fff2070347e _CFBundleCreate + 903 8 com.apple.CoreFoundation 0x00007fff206d1dd1 CFBundleCreateBundlesFromDirectory + 106 9 com.apple.framework.IOKit 0x00007fff22dc8dbe __IOHIDPlugInLoadBundles + 176 10 com.apple.framework.IOKit 0x00007fff22dc8cb5 ___IOHIDLoadBundles_block_invoke + 91 11 libdispatch.dylib 0x00007fff203c47c7 _dispatch_client_callout + 8 12 libdispatch.dylib 0x00007fff203c596b _dispatch_once_callout + 20 13 com.apple.framework.IOKit 0x00007fff22dc8c58 _IOHIDLoadBundles + 42 14 com.apple.framework.IOKit 0x00007fff22d8b61a __IOHIDEventSystemRegister + 202 15 libsystem_pthread.dylib 0x00007fff2056c21f __pthread_once_handler + 65 16 libsystem_platform.dylib 0x00007fff205b1646 _os_once_callout + 18 17 libsystem_pthread.dylib 0x00007fff2056c1cd pthread_once + 74 18 com.apple.framework.IOKit 0x00007fff22d8b734 IOHIDEventSystemCreate + 213 19 com.apple.SkyLight 0x00007fff24fa7292 WSInitialize + 3206 20 com.apple.SkyLight 0x00007fff25087d00 SLXServer + 1899 21 WindowServer 0x000000010e91333c 0x10e910000 + 13116 22 libdyld.dylib 0x00007fff2058a621 start + 1 Thread 1:: Dispatch queue: com.apple.CoreDisplay.subsidiary.services.queue 0 libsystem_kernel.dylib 0x00007fff2053aed2 semaphore_timedwait_trap + 10 1 libdispatch.dylib 0x00007fff203c4cda _dispatch_sema4_timedwait + 76 2 libdispatch.dylib 0x00007fff203c5106 _dispatch_semaphore_wait_slow + 58 3 com.apple.AmbientDisplay 0x00007fff35209e96 serviceSendMessageWithReplyAndTimeout + 296 4 com.apple.AmbientDisplay 0x00007fff3522716e AmbientDisplayTerminate + 138 5 libdispatch.dylib 0x00007fff203c35dd _dispatch_call_block_and_release + 12 6 libdispatch.dylib 0x00007fff203c47c7 _dispatch_client_callout + 8 7 libdispatch.dylib 0x00007fff203ca5fe _dispatch_lane_serial_drain + 606 8 libdispatch.dylib 0x00007fff203cb0cb _dispatch_lane_invoke + 375 9 libdispatch.dylib 0x00007fff203d4c5d _dispatch_workloop_worker_thread + 819 10 libsystem_pthread.dylib 0x00007fff2056c499 _pthread_wqthread + 314 11 libsystem_pthread.dylib 0x00007fff2056b467 start_wqthread + 15 Thread 2:: com.apple.coreanimation.render-server 0 libsystem_kernel.dylib 0x00007fff2053ae7e mach_msg_trap + 10 1 libsystem_kernel.dylib 0x00007fff2053b1f0 mach_msg + 60 2 com.apple.QuartzCore 0x00007fff26e48a4c CA::Render::Server::server_thread(void*) + 488 3 com.apple.QuartzCore 0x00007fff26e4885d thread_fun(void*) + 25 4 libsystem_pthread.dylib 0x00007fff2056f950 _pthread_start + 224 5 libsystem_pthread.dylib 0x00007fff2056b47b thread_start + 15 Thread 3: 0 libsystem_pthread.dylib 0x00007fff2056b458 start_wqthread + 0 Thread 4: 0 libsystem_pthread.dylib 0x00007fff2056b458 start_wqthread + 0 Thread 0 crashed with X86 Thread State (64-bit): rax: 0x0000000000000004 rbx: 0x00007fff8028d2d0 rcx: 0x00007ffee12eda68 rdx: 0x0000000000000000 rdi: 0x00007ffee12edb90 rsi: 0x0000000000000000 rbp: 0x00007ffee12edb60 rsp: 0x00007ffee12eda68 r8: 0x0000000000000001 r9: 0x00007ff71360d2e0 r10: 0x0000000000000000 r11: 0x0000000000000246 r12: 0x0000000000000000 r13: 0x00007ffee12ee0d0 r14: 0x00007ffee12edb90 r15: 0x0000000000000000 rip: 0x00007fff2053b71a rfl: 0x0000000000000247 cr2: 0x00007fff80452cd0 Logical CPU: 0 Error Code: 0x02000005 Trap Number: 133