danke für die Antwort.
Ich hab das Kabel gezogen und wieder eingesteckt. Dann ging wieder nichts mehr. Hier die system.log Daten:
Oct 18 22:30:50 Jonass-MacBook-Pro Live[1349]: objc[1349]: Class FIFinderSyncExtensionHost is implemented in both /System/Library/PrivateFrameworks/FinderKit.framework/Versions/A/FinderKit (0x7fffac314c90) and /System/Library/PrivateFrameworks/FileProvider.framework/OverrideBundles/FinderSyncCollaborationFileProviderOverride.bundle/Contents/MacOS/FinderSyncCollaborationFileProviderOverride (0x11b6f4cd8). One of the two will be used. Which one is undefined.
Oct 18 22:30:51 Jonass-MacBook-Pro Live[1349]: assertion failed: 17G65: libxpc.dylib + 75013 [0BC7AD67-671D-31D4-8B88-C317B8379598]: 0x89
Oct 18 22:33:53 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1412]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 22:38:04 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1415]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 22:38:04 Jonass-MacBook-Pro syslogd[51]: ASL Sender Statistics
Oct 18 22:42:15 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1421]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 22:48:19 Jonass-MacBook-Pro syslogd[51]: ASL Sender Statistics
Oct 18 22:48:35 Jonass-MacBook-Pro GoogleSoftwareUpdateAgent[1428]: 2018-10-18 22:48:35.529 GoogleSoftwareUpdateAgent[1428/0x7fffaf781380] [lvl=2] -[KSAgentApp(PrivateMethods) setUpLoggerOutputForVerboseMode:] Agent default/global settings: <KSAgentSettings:0x7fd6ade03b00 bundleID=com.google.Keystone.Agent lastCheck=2018-10-18 18:47:49 +0000 lastServerCheck=2018-10-18 18:47:47 +0000 lastCheckStart=2018-10-18 18:47:46 +0000 checkInterval=18000.000000 uiDisplayInterval=604800.000000 sleepInterval=1800.000000 jitterInterval=900 maxRunInterval=0.000000 isConsoleUser=1 ticketStorePath=/Users/jonas/Library/Google/GoogleSoftwareUpdate/TicketStore/Keystone.ticketstore runMode=3 daemonUpdateEngineBrokerServiceName=com.google.Keystone.Daemon.UpdateEngine daemonAdministrationServiceName=com.google.Keystone.Daemon.Administration alwaysPromptForUpdates=0 lastUIDisplayed=(null) alwaysShowStatusItem=0 updateCheckTag=(null) printResults=NO userInitiated=NO>
Oct 18 22:50:26 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1431]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 22:51:58 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Oct 18 22:54:36 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1437]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 22:55:17 Jonass-MacBook-Pro Live[1349]: objc[1349]: objc_disposeClassPair: class 'NICocoaView0002' still has subclasses, including 'NSKVONotifying_NICocoaView0002'!
Oct 18 22:55:17 --- last message repeated 1 time ---
Oct 18 22:55:17 Jonass-MacBook-Pro Live[1349]: objc[1349]: objc_disposeClassPair: class 'NICocoaView0001' still has subclasses, including 'NSKVONotifying_NICocoaView0001'!
Oct 18 22:55:17 --- last message repeated 1 time ---
Oct 18 22:55:17 Jonass-MacBook-Pro Live[1349]: objc[1349]: objc_disposeClassPair: class 'NICocoaWindow' still has subclasses, including 'NSKVONotifying_NICocoaWindow'!
Oct 18 22:55:17 --- last message repeated 1 time ---
Oct 18 22:55:17 Jonass-MacBook-Pro Live[1349]: objc[1349]: objc_disposeClassPair: class 'NICocoaView' still has subclasses, including 'NSKVONotifying_NICocoaView'!
Oct 18 22:55:17 --- last message repeated 1 time ---
Oct 18 22:55:17 Jonass-MacBook-Pro Live[1349]: objc[1349]: objc_disposeClassPair: class 'JUCEView_b7eb7d67f0b621f2' still has subclasses, including 'NSKVONotifying_JUCEView_b7eb7d67f0b621f2'!
Oct 18 22:55:17 --- last message repeated 1 time ---
Oct 18 22:55:17 Jonass-MacBook-Pro systemstats[63]: assertion failed: 17G65: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40
Oct 18 22:55:47 --- last message repeated 2 times ---
Oct 18 22:55:47 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1446]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 22:58:22 Jonass-MacBook-Pro syslogd[51]: ASL Sender Statistics
Oct 18 22:59:58 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1451]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 23:04:08 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1452]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 23:08:19 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1457]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 23:09:10 Jonass-MacBook-Pro syslogd[51]: ASL Sender Statistics
Oct 18 23:09:14 Jonass-MacBook-Pro systemstats[63]: assertion failed: 17G65: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40
Oct 18 23:09:23 Jonass-MacBook-Pro diagnosticd[1058]: send_stream_request_block_invoke: connecting to streaming server
Oct 18 23:09:23 Jonass-MacBook-Pro diagnosticd[1058]: System mode client started - Console (1459) - mode: 0xb
Oct 18 23:09:26 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Oct 18 23:11:33 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1460]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 23:11:33 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.
Oct 18 23:11:34 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1464]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 23:12:34 Jonass-MacBook-Pro diagnosticd[1058]: trying to reconnect
Oct 18 23:13:51 Jonass-MacBook-Pro systemstats[63]: assertion failed: 17G65: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40
Oct 18 23:15:45 Jonass-MacBook-Pro com.apple.xpc.launchd[1] (com.apple.quicklook[1494]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook
Oct 18 23:16:02 Jonass-MacBook-Pro iTunesHelper[432]: Entered:_AMMuxedDeviceDisconnected, mux-device:13
Oct 18 23:16:02 Jonass-MacBook-Pro iTunesHelper[432]: Entered:__thr_AMMuxedDeviceDisconnected, mux-device:13
Oct 18 23:16:02 Jonass-MacBook-Pro iTunesHelper[432]: tid:9313 - Mux ID not found in mapping dictionary
Oct 18 23:16:02 Jonass-MacBook-Pro iTunesHelper[432]: tid:9313 - Can't handle disconnect with invalid ecid