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iMac always stuck at the screen for login system, when I wake up the iMac that was suspended last day. iMac2020 Big Sur beta 11.3 (20E5196f) and got the log as: Mar 12 04:14:34 zimac com.apple.xpc.launchd[1] (com.apple.mdworker.shared.1D000000-0500-0000-0000-000000000000[1819]): Service exited due to SIGKILL | sent by mds[1475] Mar 12 04:14:35 zimac com.apple.xpc.launchd[1] (com.apple.mdworker.shared.10000000-0400-0000-0000-000000000000[1812]): Service exited due to SIGKILL | sent by mds[1475] Mar 12 04:14:38 zimac com.apple.xpc.launchd[1] (com.apple.mdworker.shared.03000000-0200-0000-0000-000000000000[1823]): Service exited due to SIGKILL | sent by mds[1475] Mar 12 04:14:38 zimac com.apple.xpc.launchd[1] (com.apple.mdworker.shared.12000000-0400-0000-0000-000000000000[1816]): Service exited due to SIGKILL | sent by mds[1475] Mar 12 09:23:09 zimac syslogd[61]: ASL Sender Statistics Mar 12 09:23:18 zimac UserEventAgent[62]: assertion failed: 20E5196f: com.apple.time + 13166 [D70FDA33-2395-31CA-A8A1-CBDDF34388F8]: 0xffffffffe00002f0 Mar 12 09:23:18 zimac UserEventAgent[62]: assertion failed: 20E5196f: com.apple.alarm + 6382 [73FA527C-5ECF-32A0-8E71-F941D17979D4]: 0xffffffffe00002f0 Mar 12 09:23:51 zimac com.apple.xpc.launchd[1] (com.apple.mdworker.shared.12000000-0500-0000-0000-000000000000[1827]): Service exited due to SIGKILL | sent by mds[1475] Mar 12 09:24:01 zimac UserEventAgent[380]: assertion failed: 20E5196f: com.apple.alarm + 6382 [73FA527C-5ECF-32A0-8E71-F941D17979D4]: 0xffffffffe00002f0 Mar 12 09:24:39 ziMac com.apple.xpc.launchd[1] (com.apple.mdworker.shared.12000000-0600-0000-0000-000000000000[1828]): Service exited due to SIGKILL | sent by mds[1475] -- the problem start from here Mar 12 18:55:59 ziMac syslogd[61]: ASL Sender Statistics Mar 12 18:56:09 ziMac UserEventAgent[62]: assertion failed: 20E5196f: com.apple.alarm + 6382 [73FA527C-5ECF-32A0-8E71-F941D17979D4]: 0xffffffffe00002f0 Mar 12 18:56:36 ziMac com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.system): entering bootstrap mode Mar 12 18:56:36 ziMac com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.system): exiting bootstrap mode Mar 12 18:56:51 ziMac UserEventAgent[62]: assertion failed: 20E5196f: com.apple.time + 13166 [D70FDA33-2395-31CA-A8A1-CBDDF34388F8]: 0xffffffffe00002f0 Mar 12 18:56:51 ziMac UserEventAgent[380]: assertion failed: 20E5196f: com.apple.alarm + 6382 [73FA527C-5ECF-32A0-8E71-F941D17979D4]: 0xffffffffe00002f0 Mar 12 18:56:54 zimac timed[105]: settimeofday({0x604b48f6,0x52dcd}) == 0 Mar 12 18:56:54 zimac remindd[1844]: objc[1844]: Class REMCDChangeTrackingState is implemented in both /System/Library/PrivateFrameworks/ReminderKit.framework/Versions/A/ReminderKit and /usr/libexec/remindd. One of the two will be used. Which one is undefined. Mar 12 18:56:52 zimac timed[105]: settimeofday({0x604b48f4,0x18b19}) == 0 Mar 12 18:56:53 zimac syncdefaultsd[1846]: objc[1846]: Class SYDClient is implemented in both /System/Library/PrivateFrameworks/SyncedDefaults.framework/Versions/A/SyncedDefaults and /System/Library/PrivateFrameworks/SyncedDefaults.framework/Support/syncdefaultsd. One of the two will be used. Which one is undefined. Mar 12 18:56:53 zimac syncdefaultsd[1846]: objc[1846]: Class SYDJournal is implemented in both /System/Library/PrivateFrameworks/SyncedDefaults.framework/Versions/A/SyncedDefaults and /System/Library/PrivateFrameworks/SyncedDefaults.framework/Support/syncdefaultsd. One of the two will be used. Which one is undefined. Mar 12 18:57:26 zimac com.apple.xpc.launchd[1] (com.apple.mdworker.shared.03000000-0300-0000-0000-000000000000[1843]): Service exited due to SIGKILL | sent by mds[1475] Mar 12 18:58:55 localhost bootlog[0]: BOOT_TIME 1615546735 252838 Mar 12 18:59:03 localhost syslogd[61]: Configuration Notice: ASL Module "com.apple.cdscheduler" claims selected messages. Those messages may not appear in standard system log files or in the ASL database. Mar 12 18:59:03 localhost syslogd[61]: Configuration Notice: ASL Module "com.apple.install" claims selected messages. Those messages may not appear in standard system log files or in the ASL database. Thanks.

my iPhone X with iOS14 beta3, open the photos app, all photos are blurred, and a while, the phone will reboot springboard, how to fixit? thanks

After failure installing Big Sur , I reset NVRAM with option+ command +P+R (about 20 sec to hear the boot sound), and reinstalled 10.15.6 successfully, but failed to set up Hey Siri, the screen just showed up and quit immediately, tried everything I could do, Siri only can be used via AirPods. a strange things is T2 iMac without boot chime, but my Mac shows the sound every boot after NVRAM reset. could anybody help me on it? thanks.

I am using Big Sur beta(20A4300b), and received the updated notifications with Big Sur beta and another updated to beta3, but, the system always stay at Big Sur beta(20A4300b)，no matter update which one in the update list, maybe I missed the beta2 update, how to resolve it?