Hi All,
I've just recently upgraded from a 2015 MBA to a 2020 MBP. I am having an issue with my 2020 MBP fans running high then shutting down. I notice the issue most when I am using the Zoom application, but interestingly I used Zoom on my 2015 MBA without a problem. I then turn the machine back on and receive the message that "Your computer was restarted because of a problem." would I like to report to Apple or ignore. The most recent time the machine did this I copied the log (see below). Has anyone else experienced this issue? I have tried reseting my SMC and PRAM, but the problem still persists. Should I look to exchange my machine for a new one?
Machine-check capabilities: 0x0000000000000c0b
family: 6 model: 126 stepping: 5 microcode: 150
signature: 0x706e5
Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
11 error-reporting banks
Processor 0: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 1: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 2: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 3: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 4: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 5: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 6: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 7: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
mp_kdp_enter() timed-out on cpu 6, NMI-ing
mp_kdp_enter() NMI pending on cpus: 0 1 2 3 4 5 7
mp_kdp_enter() timed-out during locked wait after NMI;expected 8 acks but received 1 after 2083647 loops in 998400000 ticks
panic(cpu 6 caller 0xffffff80006471ec): "Machine Check at 0xffffff80006590b3, registers:\n" "CR0: 0x000000008001003b, CR2: 0x00000001316a0000, CR3: 0x0000000014b8f000, CR4: 0x00000000003626e0\n" "RAX: 0x0000000000000060, RBX: 0x0000000000000001, RCX: 0x0000000000000001, RDX: 0x0000000000000000\n" "RSP: 0xffffff81ef29bef0, RBP: 0xffffff81ef29bf20, RSI: 0xffffff8000ff6640, RDI: 0xffffff8000e584c0\n" "R8: 0xffffffffffffffff, R9: 0x000000adc8dd8078, R10: 0xffffff8034067d50, R11: 0xffffff803ade5310\n" "R12: 0x0000000000000060, R13: 0xfffffde68d0f8cd2, R14: 0x0000021972f0732d, R15: 0x0000000000000006\n" "RFL: 0x0000000000000046, RIP: 0xffffff80006590b3, CS: 0x0000000000000008, SS: 0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-6153.141.2/osfmk/i386/trap_native.c:168
Backtrace (CPU 6), Frame : Return Address
0xffffff8000354310 : 0xffffff800051a65d
0xffffff8000354360 : 0xffffff8000654a75
0xffffff80003543a0 : 0xffffff80006465fe
0xffffff80003543f0 : 0xffffff80004c0a40
0xffffff8000354410 : 0xffffff8000519d27
0xffffff8000354510 : 0xffffff800051a117
0xffffff8000354560 : 0xffffff8000cc1a6c
0xffffff80003545d0 : 0xffffff80006471ec
0xffffff80003546c0 : 0xffffff8000cc1bd8
0xffffff80003546d0 : 0xffffff80004c129f
0xffffff81ef29bf20 : 0xffffff800064857a
0xffffff81ef29bf40 : 0xffffff800053f7a7
0xffffff81ef29bf80 : 0xffffff800053f968
0xffffff81ef29bfa0 : 0xffffff80004c013e
BSD 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:
19H2
Kernel version:
Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64
Kernel UUID: 05D51A3D-3A87-3FF0-98C3-9CF3827A3EDD
Kernel slide: 0x0000000000200000
Kernel text base: 0xffffff8000400000
__HIB text base: 0xffffff8000300000
System model name: MacBookPro16,2 (Mac-5F9802EFE386AA28)
System shutdown begun: NO
System uptime in nanoseconds: 2309332335063
last loaded kext at 102076622243: @filesystems.smbfs 3.4.4 (addr 0xffffff7f848d6000, size 450560)
last unloaded kext at 251027283288: >usb.!UHostPacketFilter 1.0 (addr 0xffffff7f82df6000, size 24576)
loaded kexts:
@filesystems.smbfs 3.4.4
>!AGraphicsDevicePolicy 5.2.6
@fileutil 20.036.15
@AGDCPluginDisplayMetrics 5.2.6
>!AHV 1
|IOUserEthernet 1.0.1
|IO!BSerialManager 7.0.6f7
>!AUpstreamUserClient 3.6.8
>pmtelemetry 1
>AGPM 111.4.4
>X86PlatformShim 1.0.0
>!APlatformEnabler 2.7.0d0
>!A!IICLGraphics 14.0.7
@Dont_Steal_Mac_OS_X 7.0.0
>BridgeAudioCommunication 6.70.7
>!ABacklight 180.3
>!AThunderboltIP 3.1.4
>!AAVEBridge 6.1
>!AMCCSControl 1.14
>!ABridgeAudio!C 6.70.7
>!AGFXHDA 100.1.429
>!A!IPCHPMC 2.0.1
>!ATopCaseHIDEventDriver 3430.1
>!AHIDALSService 1
>!A!IICLLPGraphicsFramebuffer 14.0.7
>!A!ISlowAdaptiveClocking 4.0.0
@filesystems.autofs 3.0
@filesystems.apfs 1412.141.1
>BCMWLANFirmware4355.Hashstore 1
>BCMWLANFirmware4364.Hashstore 1
>BCMWLANFirmware4377.Hashstore 1
>!ABCMWLANBusInterfacePCIe 1
@filesystems.hfs.kext 522.100.5
@BootCache 40
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
>!AVirtIO 1.0
@private.KextAudit 1.0
>!ASmartBatteryManager 161.0.0
>!AACPIButtons 6.1
>!ASMBIOS 2.1
>!AACPIEC 6.1
>!AAPIC 1.7
$!AImage4 1
@nke.applicationfirewall 303
$TMSafetyNet 8
@!ASystemPolicy 2.0.0
|EndpointSecurity 1
>!AGraphicsControl 5.2.6
|IOAVB!F 850.1
>!ABacklightExpert 1.1.0
@!AGPUWrangler 5.2.6
>!ASMBus!C 1.0.18d1
>!AActuatorDriver 3440.1
|IONDRVSupport 576.1
>!AHS!BDriver 3430.1
>IO!BHIDDriver 7.0.6f7
>!AMultitouchDriver 3440.1
>!AInputDeviceSupport 3440.8
>!AHIDKeyboard 209
|IO!BHost!CUARTTransport 7.0.6f7
|IO!BHost!CTransport 7.0.6f7
>!A!ILpssUARTv1 3.0.60
>!A!ILpssUARTCommon 3.0.60
>!AOnboardSerial 1.0
@!AGraphicsDeviceControl 5.2.6
|IOAccelerator!F2 438.7.3
|IOGraphics!F 576.1
|IOSlowAdaptiveClocking!F 1.0.0
>X86PlatformPlugin 1.0.0
>IOPlatformPlugin!F 6.0.0d8
@plugin.IOgPTPPlugin 840.3
|IOEthernetAVB!C 1.1.0
@kext.triggers 1.0
>usb.cdc.ncm 5.0.0
>usb.cdc 5.0.0
>usb.networking 5.0.0
>usb.!UHostCompositeDevice 1.2
>usb.!UVHCIBCE 1.2
>usb.!UVHCI 1.2
>usb.!UVHCICommonBCE 1.0
>usb.!UVHCICommon 1.0
>!AEffaceableNOR 1.0
|IOBufferCopy!C 1.1.0
|IOBufferCopyEngine!F 1
|IONVMe!F 2.1.0
>!ABCMWLANCore 1.0.0
>mDNSOffloadUserClient 1.0.1b8
>IOImageLoader 1.0.0
|IO80211!FV2 1200.12.2b1
>corecapture 1.0.4
|IOSkywalk!F 1
>!AThunderboltPCIDownAdapter 2.5.4
>!AThunderboltDPInAdapter 6.2.6
>!AThunderboltDPAdapter!F 6.2.6
>!AHPM 3.4.4
>!A!ILpssI2C!C 3.0.60
>!A!ILpssDmac 3.0.60
>!A!ILpssI2C 3.0.60
>!AThunderboltNHI 5.8.6
|IOThunderbolt!F 7.6.1
>usb.!UXHCIPCI 1.2
>usb.!UXHCI 1.2
|IOSurface 269.11
@filesystems.hfs.encodings.kext 1
|IOAudio!F 300.2
@vecLib.kext 1.2.0
|IOSerial!F 11
|IOUSB!F 900.4.2
>!AEFINVRAM 2.1
>!AEFIRuntime 2.1
>!ASMCRTC 1.0
|IOSMBus!F 1.1
|IOHID!F 2.0.0
$quarantine 4
$sandbox 300.0
@Kext.!AMatch 1.0.0d1
>!AKeyStore 2
>!UTDM 489.120.1
|IOSCSIBlockCommandsDevice 422.120.3
>!ACredentialManager 1.0
>!AFDEKeyStore 28.30
>!AEffaceable!S 1.0
>!AMobileFileIntegrity 1.0.5
@kext.CoreTrust 1
|CoreAnalytics!F 1
|IOTimeSync!F 840.3
|IONetworking!F 3.4
>DiskImages 493.0.0
|IO!B!F 7.0.6f7
|IO!BPacketLogger 7.0.6f7
>!ASSE 1.0
>KernelRelayHost 1
>!ASEPManager 1.0.1
>IOSlaveProcessor 1
|IOUSBMass!SDriver 157.140.1
|IOSCSIArchitectureModel!F 422.120.3
|IO!S!F 2.1
|IOUSBHost!F 1.2
>usb.!UCommon 1.0
>!UHostMergeProperties 1.2
>!ABusPower!C 1.0
|IOReport!F 47
>!AACPIPlatform 6.1
>!ASMC 3.1.9
>watchdog 1
|IOPCI!F 2.9
|IOACPI!F 1.4
@kec.pthread 1
@kec.corecrypto 1.0
@kec.Libm 1
I've just recently upgraded from a 2015 MBA to a 2020 MBP. I am having an issue with my 2020 MBP fans running high then shutting down. I notice the issue most when I am using the Zoom application, but interestingly I used Zoom on my 2015 MBA without a problem. I then turn the machine back on and receive the message that "Your computer was restarted because of a problem." would I like to report to Apple or ignore. The most recent time the machine did this I copied the log (see below). Has anyone else experienced this issue? I have tried reseting my SMC and PRAM, but the problem still persists. Should I look to exchange my machine for a new one?
Machine-check capabilities: 0x0000000000000c0b
family: 6 model: 126 stepping: 5 microcode: 150
signature: 0x706e5
Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
11 error-reporting banks
Processor 0: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 1: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 2: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 3: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 4: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 5: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 6: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
Processor 7: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC9_STATUS(0x425): 0xbe0000000002117a
IA32_MC9_ADDR(0x426): 0x00000001f6837400
IA32_MC9_MISC(0x427): 0x000008f73e014086
mp_kdp_enter() timed-out on cpu 6, NMI-ing
mp_kdp_enter() NMI pending on cpus: 0 1 2 3 4 5 7
mp_kdp_enter() timed-out during locked wait after NMI;expected 8 acks but received 1 after 2083647 loops in 998400000 ticks
panic(cpu 6 caller 0xffffff80006471ec): "Machine Check at 0xffffff80006590b3, registers:\n" "CR0: 0x000000008001003b, CR2: 0x00000001316a0000, CR3: 0x0000000014b8f000, CR4: 0x00000000003626e0\n" "RAX: 0x0000000000000060, RBX: 0x0000000000000001, RCX: 0x0000000000000001, RDX: 0x0000000000000000\n" "RSP: 0xffffff81ef29bef0, RBP: 0xffffff81ef29bf20, RSI: 0xffffff8000ff6640, RDI: 0xffffff8000e584c0\n" "R8: 0xffffffffffffffff, R9: 0x000000adc8dd8078, R10: 0xffffff8034067d50, R11: 0xffffff803ade5310\n" "R12: 0x0000000000000060, R13: 0xfffffde68d0f8cd2, R14: 0x0000021972f0732d, R15: 0x0000000000000006\n" "RFL: 0x0000000000000046, RIP: 0xffffff80006590b3, CS: 0x0000000000000008, SS: 0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-6153.141.2/osfmk/i386/trap_native.c:168
Backtrace (CPU 6), Frame : Return Address
0xffffff8000354310 : 0xffffff800051a65d
0xffffff8000354360 : 0xffffff8000654a75
0xffffff80003543a0 : 0xffffff80006465fe
0xffffff80003543f0 : 0xffffff80004c0a40
0xffffff8000354410 : 0xffffff8000519d27
0xffffff8000354510 : 0xffffff800051a117
0xffffff8000354560 : 0xffffff8000cc1a6c
0xffffff80003545d0 : 0xffffff80006471ec
0xffffff80003546c0 : 0xffffff8000cc1bd8
0xffffff80003546d0 : 0xffffff80004c129f
0xffffff81ef29bf20 : 0xffffff800064857a
0xffffff81ef29bf40 : 0xffffff800053f7a7
0xffffff81ef29bf80 : 0xffffff800053f968
0xffffff81ef29bfa0 : 0xffffff80004c013e
BSD 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:
19H2
Kernel version:
Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64
Kernel UUID: 05D51A3D-3A87-3FF0-98C3-9CF3827A3EDD
Kernel slide: 0x0000000000200000
Kernel text base: 0xffffff8000400000
__HIB text base: 0xffffff8000300000
System model name: MacBookPro16,2 (Mac-5F9802EFE386AA28)
System shutdown begun: NO
System uptime in nanoseconds: 2309332335063
last loaded kext at 102076622243: @filesystems.smbfs 3.4.4 (addr 0xffffff7f848d6000, size 450560)
last unloaded kext at 251027283288: >usb.!UHostPacketFilter 1.0 (addr 0xffffff7f82df6000, size 24576)
loaded kexts:
@filesystems.smbfs 3.4.4
>!AGraphicsDevicePolicy 5.2.6
@fileutil 20.036.15
@AGDCPluginDisplayMetrics 5.2.6
>!AHV 1
|IOUserEthernet 1.0.1
|IO!BSerialManager 7.0.6f7
>!AUpstreamUserClient 3.6.8
>pmtelemetry 1
>AGPM 111.4.4
>X86PlatformShim 1.0.0
>!APlatformEnabler 2.7.0d0
>!A!IICLGraphics 14.0.7
@Dont_Steal_Mac_OS_X 7.0.0
>BridgeAudioCommunication 6.70.7
>!ABacklight 180.3
>!AThunderboltIP 3.1.4
>!AAVEBridge 6.1
>!AMCCSControl 1.14
>!ABridgeAudio!C 6.70.7
>!AGFXHDA 100.1.429
>!A!IPCHPMC 2.0.1
>!ATopCaseHIDEventDriver 3430.1
>!AHIDALSService 1
>!A!IICLLPGraphicsFramebuffer 14.0.7
>!A!ISlowAdaptiveClocking 4.0.0
@filesystems.autofs 3.0
@filesystems.apfs 1412.141.1
>BCMWLANFirmware4355.Hashstore 1
>BCMWLANFirmware4364.Hashstore 1
>BCMWLANFirmware4377.Hashstore 1
>!ABCMWLANBusInterfacePCIe 1
@filesystems.hfs.kext 522.100.5
@BootCache 40
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
>!AVirtIO 1.0
@private.KextAudit 1.0
>!ASmartBatteryManager 161.0.0
>!AACPIButtons 6.1
>!ASMBIOS 2.1
>!AACPIEC 6.1
>!AAPIC 1.7
$!AImage4 1
@nke.applicationfirewall 303
$TMSafetyNet 8
@!ASystemPolicy 2.0.0
|EndpointSecurity 1
>!AGraphicsControl 5.2.6
|IOAVB!F 850.1
>!ABacklightExpert 1.1.0
@!AGPUWrangler 5.2.6
>!ASMBus!C 1.0.18d1
>!AActuatorDriver 3440.1
|IONDRVSupport 576.1
>!AHS!BDriver 3430.1
>IO!BHIDDriver 7.0.6f7
>!AMultitouchDriver 3440.1
>!AInputDeviceSupport 3440.8
>!AHIDKeyboard 209
|IO!BHost!CUARTTransport 7.0.6f7
|IO!BHost!CTransport 7.0.6f7
>!A!ILpssUARTv1 3.0.60
>!A!ILpssUARTCommon 3.0.60
>!AOnboardSerial 1.0
@!AGraphicsDeviceControl 5.2.6
|IOAccelerator!F2 438.7.3
|IOGraphics!F 576.1
|IOSlowAdaptiveClocking!F 1.0.0
>X86PlatformPlugin 1.0.0
>IOPlatformPlugin!F 6.0.0d8
@plugin.IOgPTPPlugin 840.3
|IOEthernetAVB!C 1.1.0
@kext.triggers 1.0
>usb.cdc.ncm 5.0.0
>usb.cdc 5.0.0
>usb.networking 5.0.0
>usb.!UHostCompositeDevice 1.2
>usb.!UVHCIBCE 1.2
>usb.!UVHCI 1.2
>usb.!UVHCICommonBCE 1.0
>usb.!UVHCICommon 1.0
>!AEffaceableNOR 1.0
|IOBufferCopy!C 1.1.0
|IOBufferCopyEngine!F 1
|IONVMe!F 2.1.0
>!ABCMWLANCore 1.0.0
>mDNSOffloadUserClient 1.0.1b8
>IOImageLoader 1.0.0
|IO80211!FV2 1200.12.2b1
>corecapture 1.0.4
|IOSkywalk!F 1
>!AThunderboltPCIDownAdapter 2.5.4
>!AThunderboltDPInAdapter 6.2.6
>!AThunderboltDPAdapter!F 6.2.6
>!AHPM 3.4.4
>!A!ILpssI2C!C 3.0.60
>!A!ILpssDmac 3.0.60
>!A!ILpssI2C 3.0.60
>!AThunderboltNHI 5.8.6
|IOThunderbolt!F 7.6.1
>usb.!UXHCIPCI 1.2
>usb.!UXHCI 1.2
|IOSurface 269.11
@filesystems.hfs.encodings.kext 1
|IOAudio!F 300.2
@vecLib.kext 1.2.0
|IOSerial!F 11
|IOUSB!F 900.4.2
>!AEFINVRAM 2.1
>!AEFIRuntime 2.1
>!ASMCRTC 1.0
|IOSMBus!F 1.1
|IOHID!F 2.0.0
$quarantine 4
$sandbox 300.0
@Kext.!AMatch 1.0.0d1
>!AKeyStore 2
>!UTDM 489.120.1
|IOSCSIBlockCommandsDevice 422.120.3
>!ACredentialManager 1.0
>!AFDEKeyStore 28.30
>!AEffaceable!S 1.0
>!AMobileFileIntegrity 1.0.5
@kext.CoreTrust 1
|CoreAnalytics!F 1
|IOTimeSync!F 840.3
|IONetworking!F 3.4
>DiskImages 493.0.0
|IO!B!F 7.0.6f7
|IO!BPacketLogger 7.0.6f7
>!ASSE 1.0
>KernelRelayHost 1
>!ASEPManager 1.0.1
>IOSlaveProcessor 1
|IOUSBMass!SDriver 157.140.1
|IOSCSIArchitectureModel!F 422.120.3
|IO!S!F 2.1
|IOUSBHost!F 1.2
>usb.!UCommon 1.0
>!UHostMergeProperties 1.2
>!ABusPower!C 1.0
|IOReport!F 47
>!AACPIPlatform 6.1
>!ASMC 3.1.9
>watchdog 1
|IOPCI!F 2.9
|IOACPI!F 1.4
@kec.pthread 1
@kec.corecrypto 1.0
@kec.Libm 1