Is there any way to view previous passwords on a Macbook Pro, Big Sur 11.1

I recently changed my password, and I was wondering if there’s a Terminal command to list previous passwords, just in case I wanted to change it back.

2016 MacBook Pro Touch Bar (A1706) Doesn’t Boot When Battery is Plugged In

First time posting here so I’m sorry if I mess anything up.

I have a 2016 MacBook Pro Touch Bar 13″ that refuses to charge or boot when the battery is connected (It will boot when plugged into the charger and even with the battery data cable plugged in, just not when the battery power is connected). With it booted (battery disconnected) everything works normal. The computer is not receiving power when the battery is connected (no haptic feedback on trackpad, lights, fans, etc.).

Opening up the computer and giving it a visual inspection shows no physical damage, corrosion or water damage on either side of the logic board. On one of the USB-C ports I noticed what looked like a little bit of corrosion so I cleaned it off.

What I’ve tried:

  1. Different charger cable/block (OEM)
  2. New battery (OEM)
  3. Reset SMC
    This one is a little weird. When I try to reset the SMC, per Apple’s instructions (T1 with non-removable battery-I leave the battery plugged in and charger connected) the computer refuses to boot unless I disconnect the battery. So I’m not sure if it’s actually resetting or not.

MacOS says battery – “Service Recommended”, the diagnostic (Hold R while booting) shows no problems- Reference Code:APD000 (it used to give a Service Battery before I put the new battery in), and I’ve attached a screenshot of CoconutBattery.

If anybody has any ideas of what else to check or to try that would be huge help. If there’s any other info. that you need me to provide that I didn’t please let me know. Thank you!

CoconutBattery with replacement battery installed

macbook pro – video getting stuck on external computer

I recently got Apple MacBook with M1 chipset and using external monitor Dell E2620HS for display (I am using HDMI to HDMI), while watching youtube or udemy videos, the video rendering freezes and until I i move finger of trackpad, it stays frozen.

Why is this happeneing? is my monitor old?

macos – How can you verify that FileVault 2 is enabled on a macbook?

I bought a Macbook Pro the other day to test out to see if I like it enough to switch from Linux on my personal laptop. Aside from numerous aches and pains as I try to learn the Mac way of doing things, one big thing that I find disconcerting is FileVault for FDE – I’m used to LUKS where I set it up during installation and I’m prompted for my password during boot, prior to reaching my graphical interface. Because of how this works and because I’m the only person who uses my computers, I tend to have a very complex LUKS password for startup, and a much less complex account password for my local user account.

On MacOS, however, it seems to be tied to your user account login. There’s no boot prompt and it gets all the way to the MacOS user login screen before I’m asked for a password, so I have to assume that this is the only password keeping FileVault secure.

So I have two questions:

  1. Is this correct? The security of FDE on a Macbook depends on your local account password and not on a separate password?

  2. Is there a way to easily verify that I have in fact correctly enabled Filevault 2?

macbook pro – How to lower app notification volume

I have a new MacBook Pro running Big Sur. The sound effect for individual app notifications, such as Chrome or Slack, is much louder than other sounds on my machine and I would like a way to lower their volume without changing the system volume.

I have gone to System Preferences > Sound > Sound Effects and lowered Alert volume but it has no effect on these sounds. For example, if I move the ‘Alert volume’ slider all the way to the left to where I hear no sound at all from that panel, but leave the system volume around the middle, the notification sounds I get from, apps like Slack are still extremely loud. Any help would be much appreciated.

hardware – Wine damage on MacBook Air 13’3 2019

As the title gives away I spilled a glass of wine on my mac. I turned it head down right a way and dried it. Every thing seemed to work fine until half an hour later i put it in charge. It first kept disconnecting from charge and then it wouldn’t charge anymore. So I opened it up and there seems to be some kind of stain near the thunderbolt ports on the logic board the rest of it seems to be fine and there also a blinking light.
This is the stain picture:

Blue zone wine damage


This is the LED that is still on:
https://imgur.com/gallery/gtu8Tpu

Will it be necessary to change the whole logic board? I am considering sending it to an apple certified repair shop. I am just looking to walk in prepared as to not get robbed as I am a student and can’t really afford a $700 new logic board. Thanks!

How to get CMMC LC compliance on a Macbook Pro?

Does anyone know what applications can be used to ensure CMMC LC level compliance for a Macbook Pro?

macbook pro – How to change USB scheme when making bootable Catalina installer

Background: Upgraded to Big Sur on 2020 MacPro (not the one with M1 chip), hate it, trying to revert to Catalina using a USB bootable installer (followed instructions given at the Apple website How to create a bootable installer for macOS)

When I try to install it using the external drive, I get this screen.
enter image description here

So it seems that my USB has the wrong scheme (should be GUID). I go to Disk Utility and sure enough, it seems like it’s Master Boot Record as shown below.

As per the suggested screen, I try to Erase it, but whenever I try to do that, I get the error shown below.

I’m unsure about how to resolve this and I can’t seem to find someone who experienced the same error online. The USB is a brand-new 32GB SanDisk

big sur – Macbook 16 Intel i9. Big Sur keep rebooting randomly due kernel panic

I’ve tried the usual troubleshooting steps (Reset NVRAM, SMC, Safe Boot), but still having the same issue.

 Machine-check capabilities: 0x0000000000000c0e
     family: 6 model: 158 stepping: 13 microcode: 222
     signature: 0x906ed
     Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
     14 error-reporting banks
    Processor 14: IA32_MCG_STATUS: 0x0000000000000005
     IA32_MC3_STATUS(0x40d): 0xfe40020000200135
     IA32_MC3_ADDR(0x40e):   0x0000000018ca6fe0
     IA32_MC3_MISC(0x40f):   0x0000000000702285
    Processor 15: IA32_MCG_STATUS: 0x0000000000000005
     IA32_MC3_STATUS(0x40d): 0xfe40020000200135
     IA32_MC3_ADDR(0x40e):   0x0000000018ca6fe0
     IA32_MC3_MISC(0x40f):   0x0000000000702285
    mp_kdp_enter() timed-out on cpu 3, NMI-ing
    mp_kdp_enter() NMI pending on cpus: 0 1 2 4 5 6 7 8 9 10 11 12 13 14 15
    mp_kdp_enter() timed-out during locked wait after NMI;expected 16 acks but received 1 after 10524352 loops in 1152000000 ticks
    panic(cpu 3 caller 0xffffff8017fedd19): "Machine Check at 0xffffff8018000af9, registers:n" "CR0: 0x000000008001003b, CR2: 0x00007f0294000010, CR3: 0x000000002bf95000, CR4: 0x00000000003626e0n" "RAX: 0x0000000000000060, RBX: 0x0000000000000017, RCX: 0x0000000000000001, RDX: 0x0000000000000000n" "RSP: 0xffffffb0e1603ef0, RBP: 0xffffffb0e1603f20, RSI: 0xffffff8018ddef40, RDI: 0xffffff8018c504b0n" "R8:  0x0000000000000001, R9:  0x0000000000000010, R10: 0x0000000000000001, R11: 0x0000000000000001n" "R12: 0x0000000000000060, R13: 0x000000001123d199, R14: 0x00002f902a3ed570, R15: 0x0000000000000003n" "RFL: 0x0000000000000046, RIP: 0xffffff8018000af9, CS:  0x0000000000000008, SS:  0x0000000000000000n" "Error code: 0x0000000000000000n"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-7195.60.75/osfmk/i386/trap_native.c:168
    Backtrace (CPU 3), Frame : Return Address
    0xffffff8017d57ad0 : 0xffffff8017eb9aed 
    0xffffff8017d57b20 : 0xffffff8017ffc6e3 
    0xffffff8017d57b60 : 0xffffff8017fecd1a 
    0xffffff8017d57bb0 : 0xffffff8017e5ea2f 
    0xffffff8017d57bd0 : 0xffffff8017eb938d 
    0xffffff8017d57cf0 : 0xffffff8017eb9678 
    0xffffff8017d57d60 : 0xffffff80186be3ca 
    0xffffff8017d57dd0 : 0xffffff8017fedd19 
    0xffffff8017d57ec0 : 0xffffff80186bedf5 
    0xffffff8017d57ed0 : 0xffffff8017e5f28f 
    0xffffffb0e1603f20 : 0xffffff8017fef0a2 
    0xffffffb0e1603f40 : 0xffffff8017ee1119 
    0xffffffb0e1603f80 : 0xffffff8017ee12e8 
    0xffffffb0e1603fa0 : 0xffffff8017e5e13e 
    
    Process name corresponding to current thread: kernel_task
    Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev chunklist-security-epoch=0 -chunklist-no-rev2-dev
    
    Mac OS version:
    20C69
    
    Kernel version:
    Darwin Kernel Version 20.2.0: Wed Dec  2 20:39:59 PST 2020; root:xnu-7195.60.75~1/RELEASE_X86_64
    Kernel UUID: 82E2050C-5936-3D24-AD3B-EC4EC5C09E11
    KernelCache slide: 0x0000000017c00000
    KernelCache base:  0xffffff8017e00000
    Kernel slide:      0x0000000017c10000
    Kernel text base:  0xffffff8017e10000
    __HIB  text base: 0xffffff8017d00000
    System model name: MacBookPro16,1 (Mac-E1008331FDC96864)
    System shutdown begun: NO
    Hibernation exit count: 0
    
    System uptime in nanoseconds: 52297237065495
    Last Sleep:           absolute           base_tsc          base_nano
      Uptime  : 0x00002f90663d4e0b
      Sleep   : 0x00002efaa85068d4 0x0000eac82c8e4032 0x00002eee2aaf8989
      Wake    : 0x00002efabbc7b71e 0x000114a612957668 0x00002efab9fbb382
    last started kext at 51491824437451: >usb.IOUSBHostHIDDevice    1.2 (addr 0xffffff801adad000, size 40960)
    last stopped kext at 51813744623940: >usb.!UUserHCI 1 (addr 0xffffff7fb879d000, size 98304)
    loaded kexts:
    >!ATopCaseHIDEventDriver    4020.6
    >!AHIDALSService    1
    >!APlatformEnabler  2.7.0d0
    >AGPM   119
    >X86PlatformShim    1.0.0
    @filesystems.autofs 3.0
    >!AUpstreamUserClient   3.6.8
    @kext.AMDRadeonX6000    4.0.2
    @fileutil   20.036.15
    @kext.AMDRadeonServiceManager   4.0.2
    >!A!IKBLGraphics    16.0.1
    >!A!IPCHPMC 2.0.1
    >!AGraphicsDevicePolicy 6.2.2
    >!AGFXHDA   100.1.431
    >BridgeAudioCommunication   100.2
    >!AAVEBridge    6.1
    >!AMuxControl2  6.2.2
    @AGDCPluginDisplayMetrics   6.2.2
    >!A!ICFLGraphicsFramebuffer 16.0.1
    >pmtelemetry    1
    >LuaHardwareAccess  1.0.16
    |IOUserEthernet 1.0.1
    |IO!BSerialManager  8.0.2f9
    @Dont_Steal_Mac_OS_X    7.0.0
    >!AHV   1
    >!ADiskImages2  1
    >!A!ISlowAdaptiveClocking   4.0.0
    >!AThunderboltIP    4.0.3
    >!ABridgeAudio!C    100.2
    >AGDCBacklightControl   6.2.2
    >!AMCCSControl  1.14
    >BCMWLANFirmware4378.Hashstore  1
    >BCMWLANFirmware4377.Hashstore  1
    >BCMWLANFirmware4364.Hashstore  1
    >BCMWLANFirmware4355.Hashstore  1
    >!ABCMWLANBusInterfacePCIeMac   1
    @filesystems.tmpfs  1
    @filesystems.hfs.kext   556.60.1
    @BootCache  40
    @!AFSCompression.!AFSCompressionTypeZlib    1.0.0
    @!AFSCompression.!AFSCompressionTypeDataless    1.0.0d1
    @filesystems.apfs   1677.60.23
    @private.KextAudit  1.0
    >!ASmartBatteryManager  161.0.0
    >!AACPIButtons  6.1
    >!ASMBIOS   2.1
    >!AACPIEC   6.1
    >!AAPIC 1.7
    @!ASystemPolicy 2.0.0
    @nke.applicationfirewall    310
    |IOKitRegistryCompatibility 1
    |EndpointSecurity   1
    >!AHIDKeyboard  222
    >!AHS!BDriver   4020.6
    >IO!BHIDDriver  8.0.2f9
    >!AActuatorDriver   4400.28
    >!AMultitouchDriver 4400.28
    >!AInputDeviceSupport   4400.35
    @kext.triggers  1.0
    @kext.AMDRadeonX6100HWLibs  1.0
    |IO!BHost!CUARTTransport    8.0.2f9
    |IO!BHost!CTransport    8.0.2f9
    @kext.AMDRadeonX6000Framebuffer 4.0.2
    @kext.AMDSupport    4.0.2
    @kext.AMDRadeonX6000HWServices  4.0.2
    >X86PlatformPlugin  1.0.0
    >IOPlatformPlugin!F 6.0.0d8
    >!A!ILpssUARTv1 3.0.60
    >!A!ILpssUARTCommon 3.0.60
    >!AOnboardSerial    1.0
    >!AGraphicsControl  6.2.2
    |IOAccelerator!F2   439.52
    |IOAVB!F    900.12
    @plugin.IOgPTPPlugin    900.11
    |IOEthernetAVB!C    1.1.0
    @!AGPUWrangler  6.2.2
    |IOSlowAdaptiveClocking!F   1.0.0
    |IOAudio!F  300.6.1
    @vecLib.kext    1.2.0
    @!AGraphicsDeviceControl    6.2.2
    >!ABacklightExpert  1.1.0
    |IONDRVSupport  585
    |IOGraphics!F   585
    >!ASMBus!C  1.0.18d1
    >usb.cdc.ncm    5.0.0
    >usb.cdc    5.0.0
    >usb.networking 5.0.0
    >usb.!UHostCompositeDevice  1.2
    >!ABCMWLANCoreMac   1.0.0
    |IOSerial!F 11
    |IO80211!FV2    1200.12.2b1
    >IOImageLoader  1.0.0
    >corecapture    1.0.4
    >!AThunderboltPCIDownAdapter    4.1.1
    >!AThunderboltDPInAdapter   8.1.4
    >!AThunderboltDPAdapter!F   8.1.4
    >!AHPM  3.4.4
    >!A!ILpssI2C!C  3.0.60
    >!A!ILpssI2C    3.0.60
    >!A!ILpssDmac   3.0.60
    >!ABSDKextStarter   3
    |IOSurface  289.3
    |IOSkywalk!F    1
    >mDNSOffloadUserClient  1.0.1b8
    @filesystems.hfs.encodings.kext 1
    >usb.!UVHCIBCE  1.2
    >usb.!UVHCICommonBCE    1.0
    >usb.!UVHCI 1.2
    >usb.!UVHCICommon   1.0
    >!AEffaceableNOR    1.0
    |IOBufferCopy!C 1.1.0
    |IOBufferCopyEngine!F   1
    |IONVMe!F   2.1.0
    >!AThunderboltNHI   7.2.8
    |IOThunderbolt!F    9.3.2
    |IOUSB!F    900.4.2
    >usb.!UXHCIPCI  1.2
    >usb.!UXHCI 1.2
    >!AEFINVRAM 2.1
    >!AEFIRuntime   2.1
    >!ASMCRTC   1.0
    |IOSMBus!F  1.1
    |IOHID!F    2.0.0
    $!AImage4   3.0.0
    |IOTimeSync!F   900.11
    |IONetworking!F 3.4
    >DiskImages 493.0.0
    |IO!B!F 8.0.2f9
    |IOReport!F 47
    |IO!BPacketLogger   8.0.2f9
    $quarantine 4
    $sandbox    300.0
    @kext.!AMatch   1.0.0d1
    |CoreAnalytics!F    1
    >!ASSE  1.0
    >!AKeyStore 2
    >!UTDM  511.60.2
    |IOUSBMass!SDriver  184.40.6
    |IOSCSIBlockCommandsDevice  436.40.6
    |IO!S!F 2.1
    |IOSCSIArchitectureModel!F  436.40.6
    >!AMobileFileIntegrity  1.0.5
    @kext.CoreTrust 1
    >!AFDEKeyStore  28.30
    >!AEffaceable!S 1.0
    >!ACredentialManager    1.0
    >KernelRelayHost    1
    |IOUSBHost!F    1.2
    >!UHostMergeProperties  1.2
    >usb.!UCommon   1.0
    >!ABusPower!C   1.0
    >!ASEPManager   1.0.1
    >IOSlaveProcessor   1
    >!AACPIPlatform 6.1
    >!ASMC  3.1.9
    |IOPCI!F    2.9
    |IOACPI!F   1.4
    >watchdog   1
    @kec.pthread    1
    @kec.corecrypto 11.1
    @kec.Libm   1