Ho notato che ogni volta che accendo il mio Mac mini, il logo Apple scompare e lo schermo diventa nero per una frazione di secondo durante la schermata iniziale di avvio. Quindi la barra di caricamento ritorna ma il resto dello schermo rimane nero fino al termine del caricamento e viene visualizzata la schermata di accesso.
L'ho registrato nel video qui .
Questo mi sembra strano visto che non ho mai notato questo comportamento su altri Mac o MacBook. Qualcuno ha un'idea di cosa potrebbe causare questo e se questo è un comportamento "normale"?
Specifiche: Mac Mini a metà 2011, OS X El Capitan, unità Fusion da 150 GB. FileVault è disabilitato.
Ho provato diversi monitor e questo comportamento persiste. Questo problema è riproducibile anche in modalità provvisoria.
Si noti che questa domanda non è un duplicato dell'altro "thread diventa nero casualmente" thread - il mio schermo non diventa nero casualmente, solo durante l'avvio e succede in modo coerente.
Ecco l'output di sudo dmesg :
Longterm timer threshold: 1000 ms
PMAP: PCID enabled
Darwin Kernel Version 15.6.0: Thu Jun 23 18:25:34 PDT 2016; root:xnu-3248.60.10~1/RELEASE_X86_64
vm_page_bootstrap: 4045103 free pages and 116433 wired pages
kext submap [0x<ptr> - 0x<ptr>], kernel text [0x<ptr> - 0x<ptr>]
zone leak detection enabled
"vm_compressor_mode" is 4
multiq scheduler config: deep-drain 0, ceiling 47, depth limit 4, band limit 127, sanity check 0
standard timeslicing quantum is 10000 us
standard background quantum is 2500 us
WQ[lt_init]: init linktable with max:262144 elements (8388608 bytes)
WQ[wqp_init]: init prepost table with max:262144 elements (8388608 bytes)
mig_table_max_displ = 16
TSC Deadline Timer supported and enabled
kdp_core zlib memory 0x7000
AppleACPICPU: ProcessorId=1 LocalApicId=0 Enabled
AppleACPICPU: ProcessorId=2 LocalApicId=2 Enabled
AppleACPICPU: ProcessorId=3 LocalApicId=1 Enabled
AppleACPICPU: ProcessorId=4 LocalApicId=3 Enabled
AppleACPICPU: ProcessorId=5 LocalApicId=255 Disabled
AppleACPICPU: ProcessorId=6 LocalApicId=255 Disabled
AppleACPICPU: ProcessorId=7 LocalApicId=255 Disabled
AppleACPICPU: ProcessorId=8 LocalApicId=255 Disabled
calling mpo_policy_init for TMSafetyNet
Security policy loaded: Safety net for Time Machine (TMSafetyNet)
calling mpo_policy_init for AMFI
Security policy loaded: Apple Mobile File Integrity (AMFI)
calling mpo_policy_init for Sandbox
Security policy loaded: Seatbelt sandbox policy (Sandbox)
calling mpo_policy_init for Quarantine
Security policy loaded: Quarantine policy (Quarantine)
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
MAC Framework successfully initialized
using 16384 buffer headers and 10240 cluster IO buffer headers
AppleCredentialManager::start called
AssertMacros: tmpData (value: 0x0), file: /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleCredentialManager/AppleCredentialManager-83.40.3/AppleCredentialManager/AppleCredentialManager.cpp, line: 785
AppleKeyStore starting (BUILT: Jun 23 2016 18:53:27)
IOAPIC: Version 0x20 Vectors 64:87
ACPI: sleep states S3 S4 S5
pci (build 18:43:02 Jun 23 2016), flags 0xe3000, pfm64 (36 cpu) 0xf80000000, 0x80000000
AppleIntelCPUPowerManagement: Turbo Ratios 0057
AppleIntelCPUPowerManagement: (built 18:41:46 Jun 23 2016) initialization complete
[ PCI configuration begin ]
console relocated to 0xf80010000
[ PCI configuration end, bridges 13, devices 18 ]
000001.040173 AppleUSBLegacyRoot@: AppleUSBLegacyRoot::init: enabling legacy matching
AirPort_Brcm4360::init AirPortFamily_kexts-1110.28 "AirPortFamily_kexts-1110.28" Jun 23 2016 18:50:33
AirPort_Brcm4331::init AirPortFamily_kexts-1110.28 "AirPortFamily_kexts-1110.28" Jun 23 2016 18:50:33
mcache: 4 CPU(s), 64 bytes CPU cache line size
mbinit: done [128 MB total pool size, (85/42) split]
rooting via boot-uuid from /chosen: 9B4B7041-E3BD-3DDD-8109-77EC5E0F37D8
Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
com.apple.AppleFSCompressionTypeZlib kmod start
com.apple.AppleFSCompressionTypeDataless kmod start
com.apple.AppleFSCompressionTypeZlib load succeeded
com.apple.AppleFSCompressionTypeDataless load succeeded
AppleIntelCPUPowerManagementClient: ready
IO80211Controller::createIOReporters 0x5d91e70a0ec6d401
CCFlags: 0x0, CCLevel: 5 ConsoleFlags: 0x0, ConsoleLevel: -1
No Service found 100000205
configureInterests - nElements <= 0!Failed to addSubscription for group Chip subgroup Bytes Transferred driver 0x5d91e70a0ec6d401 - data underrun
IO80211ControllerMonitor::configureSubscriptions() failed to add subscriptionIO80211Controller::start _controller is 0x5d91e70a0ec6d401, provider is 0x5d91e70a0ec8f701
CoreStorage: fsck_cs has finished for group "116CA7CE-5FB6-4E79-A0BE-A68934CA8342" with status 0x00
FireWire (OHCI) TI ID 823f built-in now active, GUID c82a14fffeed8de0; max speed s800.
BTCOEXIST off
AirPort_Brcm4331::apple80211RequestIoctl type 0xc cmd GET
thr <ptr> Composite Disk alg="bloomclock" unit_nbytes=131072
Got boot device = IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchSeriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/KINGSTON SV300S37A120G Media/IOGUIDPartitionScheme/FusionDrive@2/CoreStoragePhysical/FusionDrive/OSX
BSD root: disk2, major 1, minor 9
AirPort_Brcm4331::apple80211RequestIoctl type 0xe cmd GET
AirPort_Brcm4331::apple80211RequestIoctl type 0x50 cmd GET
BRCM tunables:
pullmode[1] txringsize[ 256] txsendqsize[1024] reapmin[ 32] reapcount[ 128]
hfs: mounted OSX on device root_device
VM Swap Subsystem is ON
IOBluetoothUSBDFU::probe
IOBluetoothUSBDFU::probe ProductID - 0x8281 FirmwareVersion - 0x0151
IO80211Controller::dataLinkLayerAttachComplete(): adding AppleEFINVRAM notification
IO80211Interface::efiNVRAMPublished():
initting Scan Manager controller 0x5d91e70a0ec6d401 ioservice 0x5d91e70a0ec8f701 interface 0x5d91e70a0eed5401 ioservce 0x5d91e70a0ec6d401
bpfAttach len 64 dlt 12
fInterfaceSnapshots is missing
fInterfaceSnapshots is missing
fInterfaceSnapshots is missing
fInterfaceSnapshots is missing
fInterfaceSnapshots is missing
fInterfaceSnapshots is missing
fInterfaceSnapshots is missing
fInterfaceSnapshots is missing
fInterfaceSnapshots is missing
fInterfaceSnapshots is missing
AirPort: Link Down on en1. Reason 8 (Disassociated because station leaving).
Got incomplete channel sequence length 0, should be 16
Got incomplete channel sequence length 0, should be 16
en1: channel changed to 1
en1::IO80211Interface::postMessage bssid changed
bpfAttach len 94 dlt 163
bpfAttach len 30 dlt 105
bpfAttach len 52 dlt 127
bpfAttach len 38 dlt 192
hfs: mounted Backup on device disk1s4
Waiting for DSMOS...
IOGraphics flags 0x43
**** [IOBluetoothHostControllerUSBTransport][start] -- completed -- result = TRUE -- 0x6800 ****
**** [BroadcomBluetoothHostControllerUSBTransport][start] -- Completed (matched on Device) -- 0x6800 ****
[IOBluetoothFamily][staticBluetoothTransportShowsUp] -- Received Bluetooth Controller register service notification -- 0x6800
[IOBluetoothFamily][start] -- completed
[IOBluetoothHostController][start] -- completed
[IOBluetoothHostController::setConfigState] calling registerService
**** [IOBluetoothFamily][ProcessBluetoothTransportShowsUpActionWL] -- calling IOBluetoothFamily's registerService() -- 0xecd0 -- 0x2e00 -- 0x6800 ****
**** [IOBluetoothFamily][ProcessBluetoothTransportShowsUpActionWL] -- Connected to the transport successfully -- 0xecd0 -- 0x2e00 -- 0x6800 ****
** GPU Hardware VM is disabled (multispace: disabled, page table updates with DMA: disabled, non-contiguous VRAM: disabled)
in6_unlink_ifa: IPv6 address 0xc3adbd9d04b404ab has no prefix
Previous shutdown cause: 5
DSMOS has arrived
in func createVirtualInterface ifRole = 1
IO80211VirtualInterface::createIOReporters p2p0 provider 0
IO80211InterfaceMonitor::initWithServiceAndName(): Unable to get fProvider
Unable to create IO80211InterfaceMonitor
AirPort_Brcm4331_P2PInterface::init name <p2p0> role 1
IO80211VirtualInterface::init _controller is 0x5d91e70a0ec6d401, provider is 0x5d91e70a0ec8f701
IO80211VirtualInterface::createIOReporters p2p0 provider 0x5d91e70a0ec6d401
AirPort_Brcm4331_P2PInterface::init <p2p> role 1
Created virtif <ptr> p2p0
AppleLPC::notifyPlatformASPM - registering with plugin with ASPM Support true
en2: promiscuous mode enable succeeded
Ethernet [AppleBCM5701Ethernet]: Link up on en0, 100-Megabit, Full-duplex, Symmetric flow-control, Debug [796d,0301,0de1,0300,45e1,0000]
0 [Level 5] [com.apple.message.domain com.apple.commssw.ethernet.broadcom.link] [com.apple.message.signature 100-Megabit] [com.apple.message.signature2 Full-duplex] [com.apple.message.signature3 Symmetric flow-control] [com.apple.message.signature4 EEE disabled]
0 [Level 5] [com.apple.message.domain com.apple.commssw.ethernet.broadcom.load] [com.apple.message.signature 0x14E4] [com.apple.message.signature2 0x16B4] [com.apple.message.signature3 {Asymmetric-Pause=0}{Pause=1}{100baseTX-full-duplex=1}{100baseTX-half-duplex=1}{10baseT-full-duplex=1}{10baseT-half-duplex=1}{1000baseT-full-duplex=0}{100baseTX-EEE=0}{1000baseT-EEE=0}] [com.apple.message.signature4 1]
ignored is_io_service_close(0x100000445,IOHIDParamUserClient)
AppleKeyStore::handleUserClientCommandGated: asking for specific bag 501 (eff -501)
AppleKeyStore::handleUserClientCommandGated: set handle 1 as special bag -501
AppleKeyStore:Sending lock change 1 for handle 1
AppleKeyStore:Sending lock change 0 for handle -501
Sandbox: netbiosd(223) deny(1) file-read-metadata /usr
Sandbox: airportd(58) deny(1) file-read-metadata /usr
Sandbox: systemsoundserve(225) deny(1) file-read-data /usr/lib/libFosl_dynamic.dylib
Sandbox: systemsoundserve(225) deny(1) file-read-data /private/var/root/Library/Preferences/.GlobalPreferences.plist
Sandbox: systemsoundserve(225) deny(1) file-read-data /usr/lib/libFosl_dynamic.dylib
Sandbox: systemsoundserve(225) deny(1) file-read-data /usr/lib/libScreenReader.dylib
pci pause: SDXC
ALF: ifnet_get_address_list_family error 12
Sandbox: SocialPushAgent(371) deny(1) file-write-data /Users/UltCombo/Library/Preferences/com.apple.socialpushagent.plist
Sandbox: SocialPushAgent(371) deny(1) file-write-data /Users/UltCombo/Library/Preferences/com.apple.socialpushagent.plist
Sandbox: AssetCacheLocato(405) deny(1) mach-lookup com.apple.cookied
ignored is_io_service_close(0x100000445,IOHIDParamUserClient)
Sandbox: mdworker(434) deny(1) mach-lookup com.apple.distributed_notifications@1v3