[Lenovo ZUK Z2 (Plus) ROMs, Kernels, Recoveries, & ] jrtokarz:
WiFi hotspot not working after latest update.

I am also have an issue with the WiFi hotspot. Here's the output from 'logcat' when I try to activate the hotspot:

01-23 09:46:00.363 1861 1994 I ConnectivityManager: startTethering caller:com.android.systemui
01-23 09:46:00.364 970 3561 I WifiService: startSoftAp uid=1000
01-23 09:46:00.365 970 1723 D WifiStateMachinePrime: Starting SoftApModeManager
01-23 09:46:00.367 618 618 I android.hardware.wifi@1.0-service: Wifi HAL started
01-23 09:46:00.368 970 1723 I WifiVendorHal: Vendor Hal started successfully
01-23 09:46:00.369 970 1726 I WifiP2pNative: Registering for interface available listener
01-23 09:46:00.376 970 1726 D WifiP2pNative: P2P InterfaceAvailableListener true
01-23 09:46:00.376 970 1726 D WifiP2pService: Wifi enabled=false, P2P Interface availability=true, Number of clients=0
01-23 09:46:00.376 970 1726 D WifiP2pService: Wifi enabled=false, P2P Interface availability=true
01-23 09:46:00.402 2687 2687 I GeofencerStateMachine: sendNewLocationAvailability: availability=LocationAvailability[isLocationAvailable: true]
01-23 09:46:00.636 970 3585 I WifiService: releaseWifiLock uid=10128
01-23 09:46:00.667 11148 11182 W Settings: Setting preferred_network_mode has moved from android.provider.Settings.Secure to android.provider.Settings.Global.
01-23 09:46:00.690 11148 11182 W Settings: Setting preferred_network_mode has moved from android.provider.Settings.Secure to android.provider.Settings.Global.
01-23 09:46:01.004 614 1145 I Sensors : Prox Event Far
01-23 09:46:01.591 714 714 I wificond: Regulatory domain changed
01-23 09:46:01.591 714 714 E wificond: Failed to find expected wiphy info from NL80211_CMD_GET_WIPHY responses
01-23 09:46:01.591 714 714 I wificond: 2.4Ghz frequencies:
01-23 09:46:01.591 714 714 I wificond: 5Ghz non-DFS frequencies:
01-23 09:46:01.591 714 714 I wificond: 5Ghz DFS frequencies:
01-23 09:46:01.591 714 714 I wificond: Regulatory domain changed
01-23 09:46:01.592 714 714 E wificond: Failed to find expected wiphy info from NL80211_CMD_GET_WIPHY responses
01-23 09:46:01.592 714 714 I wificond: 2.4Ghz frequencies:
01-23 09:46:01.592 714 714 I wificond: 5Ghz non-DFS frequencies:
01-23 09:46:01.592 714 714 I wificond: 5Ghz DFS frequencies:
01-23 09:46:01.592 714 714 I wificond: Regulatory domain changed
01-23 09:46:01.592 714 714 E wificond: Failed to find expected wiphy info from NL80211_CMD_GET_WIPHY responses
01-23 09:46:01.592 714 714 I wificond: 2.4Ghz frequencies:
01-23 09:46:01.592 714 714 I wificond: 5Ghz non-DFS frequencies:
01-23 09:46:01.592 714 714 I wificond: 5Ghz DFS frequencies:
01-23 09:46:01.592 714 714 I wificond: Regulatory domain changed
01-23 09:46:01.592 714 714 E wificond: Failed to find expected wiphy info from NL80211_CMD_GET_WIPHY responses
01-23 09:46:01.592 714 714 I wificond: 2.4Ghz frequencies:
01-23 09:46:01.592 714 714 I wificond: 5Ghz non-DFS frequencies:
01-23 09:46:01.592 714 714 I wificond: 5Ghz DFS frequencies:
01-23 09:46:01.637 970 1745 I EthernetTracker: maybeTrackInterface wlan0
01-23 09:46:01.641 970 1040 I EthernetTracker: interfaceLinkStateChanged, iface: wlan0, up: false
01-23 09:46:01.641 820 844 I LOWI-8.6.0.31: [LOWIController] isWifiEnabled: Wifi is now enabled
01-23 09:46:01.641 618 618 I WifiHAL : Initializing wifi
01-23 09:46:01.643 820 844 I LOWI-8.6.0.31: [LOWI-ROME-RTT] RomeWipsOpen: libCld80211 found, load the symbols..
01-23 09:46:01.644 970 1745 I EthernetTracker: maybeTrackInterface p2p0
01-23 09:46:01.647 2064 2064 D DPMJ : |SERVICE| DPM received action android.net.conn.TETHER_STATE_CHANGED
01-23 09:46:01.647 2064 2064 D DPMJ : |SERVICE| available = 1 active = 0 errored = 0
01-23 09:46:01.650 970 1040 I EthernetTracker: interfaceLinkStateChanged, iface: p2p0, up: false
01-23 09:46:01.651 970 1040 I EthernetTracker: interfaceLinkStateChanged, iface: wlan0, up: false
01-23 09:46:01.652 618 618 E CLD80211: /vendor/bin/hw/android.hardware.wifi@1.0-service: Could not resolve cld80211 familty id
01-23 09:46:01.652 970 1040 I EthernetTracker: interfaceLinkStateChanged, iface: wlan0, up: false
01-23 09:46:01.655 2064 2064 D DPMJ : |SERVICE| Tethering disabled
01-23 09:46:01.655 2064 2064 I DPMJ : |SERVICE| sendTetheringState: state: false
01-23 09:46:01.663 820 844 E CLD80211: lowi-server: Could not resolve cld80211 familty id
01-23 09:46:01.663 820 844 I LOWI-8.6.0.31: [LOWI-ROME-RTT] RomeWipsOpen: Init and Registration failed
01-23 09:46:01.663 618 618 I android.hardware.wifi@1.0-service: Adding interface handle for wlan0
01-23 09:46:01.663 618 618 I android.hardware.wifi@1.0-service: Adding interface handle for p2p0
01-23 09:46:01.663 618 618 I android.hardware.wifi@1.0-service: Configured chip in mode 1
01-23 09:46:01.664 820 20077 I LOWI-8.6.0.31: [LOWI-Scan] get_intf_mode: WLAN interface type 2, err 0
01-23 09:46:01.674 970 1726 D WifiP2pNative: P2P InterfaceAvailableListener false
01-23 09:46:01.674 970 1726 D WifiP2pService: Wifi enabled=false, P2P Interface availability=false
01-23 09:46:01.678 970 1723 D WificondControl: Setting up interface for soft ap mode
01-23 09:46:01.681 970 1723 I WifiNative: Interface state changed on Iface:{Name=wlan0,Id=16,Type=AP}, isUp=true
01-23 09:46:01.681 970 1723 I WifiNative: Successfully setup Iface:{Name=wlan0,Id=16,Type=AP}
01-23 09:46:01.682 1861 15784 V WifiManager: SoftApCallbackProxy: onStateChanged: state=12, failureReason=0
01-23 09:46:01.684 970 1011 W BroadcastQueue: Background execution not allowed: receiving Intent { act=android.net.wifi.WIFI_AP_STATE_CHANGED flg=0x4000010 (has extras) } to com.google.android.gms/.chimera.GmsIntentOperationService$PersistentTrustedReceiver
01-23 09:46:01.685 970 970 D WifiService: handleWifiApStateChange: currentState=12 previousState=11 errorCode= -1 ifaceName=wlan0 mode=1
01-23 09:46:01.739 20082 20082 W hostapd : type=1400 audit(0.0:33905): avc: denied { noatsecure } for scontext=u:r:init:s0 tcontext=u:r:hal_wifi_hostapd_default:s0 tclass=process permissive=0
01-23 09:46:01.775 20082 20082 I hostapd : Processing hidl events on FD 3
01-23 09:46:01.778 503 503 W hwservicemanager: getTransport: Cannot find entry android.hardware.wifi.hostapd@1.0::IHostapd/default in either framework or device manifest.
01-23 09:46:01.778 970 19758 W System.err: java.util.NoSuchElementException
01-23 09:46:01.778 970 19758 W System.err:	at android.os.HwBinder.getService(Native Method)
01-23 09:46:01.778 970 19758 W System.err:	at android.os.HwBinder.getService(HwBinder.java:91)
01-23 09:46:01.778 970 19758 W System.err:	at android.hardware.wifi.hostapd.V1_0.IHostapd.getService(IHostapd.java:48)
01-23 09:46:01.778 970 19758 W System.err:	at android.hardware.wifi.hostapd.V1_0.IHostapd.getService(IHostapd.java:52)
01-23 09:46:01.779 970 19758 W System.err:	at com.android.server.wifi.HostapdHal.getHostapdMockable(HostapdHal.java:386)
01-23 09:46:01.779 970 19758 W System.err:	at com.android.server.wifi.HostapdHal.initHostapdService(HostapdHal.java:203)
01-23 09:46:01.779 970 19758 W System.err:	at com.android.server.wifi.HostapdHal.access$200(HostapdHal.java:43)
01-23 09:46:01.779 970 19758 W System.err:	at com.android.server.wifi.HostapdHal$1.onRegistration(HostapdHal.java:64)
01-23 09:46:01.779 970 19758 W System.err:	at android.hidl.manager.V1_0.IServiceNotification$Stub.onTransact(IServiceNotification.java:389)
01-23 09:46:01.779 970 19758 E android_os_HwBinder: Uncaught exception!
01-23 09:46:02.179 1861 1861 D StatusBar: disable<e i a s b h r c s > disable2<q i n >
01-23 09:46:02.265 1861 1861 D StatusBar: disable<e i a s b h r c s > disable2<q i n >
01-23 09:46:02.279 1861 1994 V WifiManager: registerSoftApCallback: callback=com.android.systemui.statusbar.policy.HotspotControllerImpl@ba7bf3e, handler=Handler (android.os.Handler) {aa5819f}
01-23 09:46:02.280 1861 18137 V WifiManager: SoftApCallbackProxy: onStateChanged: state=12, failureReason=0
01-23 09:46:02.280 1861 18137 V WifiManager: SoftApCallbackProxy: onNumClientsChanged: numClients=0
01-23 09:46:06.797 970 1723 E WifiNative: Failed to establish connection to hostapd
01-23 09:46:06.798 970 1723 E SoftApManager: Soft AP start failed
01-23 09:46:06.800 1861 18137 V WifiManager: SoftApCallbackProxy: onStateChanged: state=14, failureReason=0
01-23 09:46:06.808 970 970 E WifiController: SoftAP start failed
01-23 09:46:06.809 970 970 D WifiService: handleWifiApStateChange: currentState=14 previousState=12 errorCode= 0 ifaceName=wlan0 mode=1
01-23 09:46:06.810 970 970 D WifiService: updateInterfaceIpState: ifaceName=null mode=-1 previous mode= -1
01-23 09:46:06.810 970 1011 W BroadcastQueue: Background execution not allowed: receiving Intent { act=android.net.wifi.WIFI_AP_STATE_CHANGED flg=0x4000010 (has extras) } to com.google.android.gms/.chimera.GmsIntentOperationService$PersistentTrustedReceiver
01-23 09:46:06.824 19852 19994 I chatty : uid=10189(com.server.auditor.ssh.client) Parser Thread expire 40 lines
01-23 09:46:06.853 970 1723 E HostapdHal: Can't call removeAccessPoint, IHostapd is null
01-23 09:46:06.857 970 1723 E WifiNative: Failed to remove access point on Iface:{Name=wlan0,Id=16,Type=AP}
01-23 09:46:06.857 970 1723 E HostapdHal: No Death handler present
01-23 09:46:06.902 970 2032 E WifiService: Failed to post runnable to fetch scan results
01-23 09:46:06.916 970 1040 I EthernetTracker: interfaceLinkStateChanged, iface: wlan0, up: false
01-23 09:46:06.923 970 1723 D WificondControl: tearing down interfaces in wificond
01-23 09:46:06.932 618 618 I WifiHAL : Sent msg on exit sock to unblock poll()
01-23 09:46:06.932 618 20076 E WifiHAL : 1 events were leftover without being freed
01-23 09:46:06.932 618 20076 I android.hardware.wifi@1.0-service: Legacy HAL stop complete callback received
01-23 09:46:06.939 820 844 I LOWI-8.6.0.31: [LOWIController] isWifiEnabled: Wifi is now disabled
01-23 09:46:06.940 820 20077 I LOWI-8.6.0.31: [LOWIScanResultReceiver] Thread terminate was requested
01-23 09:46:06.942 970 1745 D EthernetNetworkFactory: updateCapabilityFilter: []
01-23 09:46:06.942 820 20078 I LOWI-8.6.0.31: [LOWIScanResultReceiver] Thread terminate was requested
01-23 09:46:06.947 2064 2064 D DPMJ : |SERVICE| DPM received action android.net.conn.TETHER_STATE_CHANGED
01-23 09:46:06.947 2064 2064 D DPMJ : |SERVICE| available = 0 active = 0 errored = 0
01-23 09:46:06.948 2064 2064 D DPMJ : |SERVICE| Tethering disabled
01-23 09:46:06.948 2064 2064 I DPMJ : |SERVICE| sendTetheringState: state: false
01-23 09:46:06.990 970 1745 D EthernetNetworkFactory: updateCapabilityFilter: []
01-23 09:46:07.146 618 618 I android.hardware.wifi@1.0-service: Wifi HAL stopped
01-23 09:46:07.152 970 1723 I WifiVendorHal: Vendor Hal stopped
01-23 09:46:07.153 970 1723 I WifiNative: Successfully torn down Iface:{Name=wlan0,Id=16,Type=AP}
01-23 09:46:07.155 970 1723 E HalDevMgr: Should have at least 1 chip!
01-23 09:46:07.155 970 1723 E HalDevMgr: dispatchAvailableForRequestListeners: no chip info found
01-23 09:46:07.158 970 1723 I WifiNative: Successfully initiated teardown for iface=wlan0
01-23 09:46:07.158 970 1723 D SoftApManager: Soft AP is stopped