Big Sur crash restart loop after update

Update: Macbook pro 16 restarts every 12 minutes. I could transfer vital files from mac hd to an external drive after 15 times restarts. in meanwhile I download Catalina as well.
first try to make a bootable flash was failed. coz it takes more than 12 mintues.
I tried on faster sd card and it works.
I've done clean install with Catalina. It works well. #BigSur beautifully sucks. never ever upgrade.

I was able to fix this issue by performing the following steps:

1. Restart into recovery mode by holding Command + R during start up.

2. Click the Apple menu option and choose “Startup Disk”.

3. Unlock your hard drive to choose it for booting.

4. The computer should restart and return to normal.

I hope this helps!

jz1988 advice worked for me. thank you!

Hi all,

Managed to get mine to work again by booting into recovery mode, opening disk utility and performing first aid on the main volume, then doing the same on the data volume.

Booted up fine after that!

Happens two times for me. Any solution?

I have same problem, i format and install and loop reboot and black crash screen

I have same issue in my Macbook pro 13 inch. restart loop after update~~ any solution?

The same is happening on my iMac. Installed yesterday and now it keeps restarting again and again. I'm going to check to see if the time is similar to what another person posted (about 35 min). This is unacceptable and disrupting my work especially since I'm a university lecturer and all classes are online now. Get it fixed TODAY!

Try disabling both automatic graphics switching and enable power nap under battery and power adapter.
Path: System Preferences > Battery

i just wanted to add here, I had this issue and i tried all of these suggestions, none of which worked, but reinstalling the update in recovery mode worked for me.

I had the same issues. I tried the other suggestions but it didn't work. I was only able to boot and login to my session in safe mode (holding Cmd+S during startup).

I was then able to solve my problem with a RAM/PRAM reset : https://support.apple.com/en-us/HT204063

Good luck to all

I'm having similar issues - my Macbook keeps restarting randomly! Apple should really fix this immediately!

Besides from this, I'm having issues connecting to the Wifi and my personal hotspot randomly - the issues are completely messes up my working life these days. A restart often helps the internet connection issues, but I'm not prepared to have and expensive computer, and then having to go through so much trouble constantly. Also, restarting the computer doesn't work most of the time - it closes down some of the programs and then just stalls in the process letting me know that Preview hindered the restart - though Preview seems fine. In addition, the force quitting function doesn't work when I'm having this issue. Only option is harsh manual button down turn-off the computer.

On top of this my computer is struggling bad with a whole lot of ventilation-noise just from having my email, Word and Safari open.
Its a 2,3 GHz 8-Core Intel Core i9, Intel UHD Graphics 630 1536 MB from the end of 2019

Talked to the Danish Apple support last week and they reported that there were no general issues with the Big Sur update - should have googled before calling ;)
Never experienced so many systematic issues with Mac ever before - hope they fix this ASAP or I'll have to continue my PhD-thesis on a Windows computer

So I think I figured out the problem at least in my case. For whatever reason after I upgraded to big sur I found my fans were not kicking in when they were supposed to and as a result my computer temperatures ran really hot. I have turbo pro free extension that enables me to monitor my temp. So it would heat up, freeze and reboot.

I would have nothing more than a Firefox browser open and temp would run upto 90 degrees. So to fix this I reset the PRAM and SMC. Once I did that all is well. Fans kick in and my computer temp is between 55 and 70 Celsius now.

if this doesn’t work you can run diagnostic by rebooting your computer and pressing and holding down “D” on reboot. That will take you to run online diagnostics if the problem is something else. Hope this helps

i have same crash problems , do you have any plan now?

log:

{"filestoattach":["\/Library\/Logs\/DiagnosticReports\/ProxiedDevice-Bridge\/panic-full-2020-12-25-005308.0003.ips"],"logpath":"\/Library\/Logs\/DiagnosticReports\/ProxiedDevice-Bridge\/panic-full-2020-12-25-005308.0003.ips","panicstring":"panic(cpu 8 caller 0xffffff80083fd817): \"IOSCSIPeripheralDeviceType00::setPowerState(0xffffff938d618520 : 0xffffff800a66d2e0, 3 -> 2) timed out after 251675 ms\"@\/AppleInternal\/BuildRoot\/Library\/Caches\/com.apple.xbs\/Sources\/xnu\/xnu-7195.60.75\/iokit\/Kernel\/IOServicePM.cpp:5382\nBacktrace (CPU 8), Frame : Return Address\n0xffffffa0b18fbac0 : 0xffffff8007cb9aed \n0xffffffa0b18fbb10 : 0xffffff8007dfc6e3 \n0xffffffa0b18fbb50 : 0xffffff8007decd1a \n0xffffffa0b18fbba0 : 0xffffff8007c5ea2f \n0xffffffa0b18fbbc0 : 0xffffff8007cb938d \n0xffffffa0b18fbce0 : 0xffffff8007cb9678 \n0xffffffa0b18fbd50 : 0xffffff80084be3ca \n0xffffffa0b18fbdc0 : 0xffffff80083fd817 \n0xffffffa0b18fbe10 : 0xffffff80083fd139 \n0xffffffa0b18fbe20 : 0xffffff8008415bee \n0xffffffa0b18fbe60 : 0xffffff80083fbeb8 \n0xffffffa0b18fbe80 : 0xffffff8007cfe6b5 \n0xffffffa0b18fbef0 : 0xffffff8007cff5c4 \n0xffffffa0b18fbfa0 : 0xffffff8007c5e13e \n\nProcess name corresponding to current thread: kerneltask\nBoot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev\n\nMac OS version:\n20C69\n\nKernel version:\nDarwin Kernel Version 20.2.0: Wed Dec 2 20:39:59 PST 2020; root:xnu-7195.60.75~1\/RELEASEX8664\nKernel UUID: 82E2050C-5936-3D24-AD3B-EC4EC5C09E11\nKernelCache slide: 0x0000000007a00000\nKernelCache base: 0xffffff8007c00000\nKernel slide:   0x0000000007a10000\nKernel text base: 0xffffff8007c10000\nHIB text base: 0xffffff8007b00000\nSystem model name: MacBookPro16,1 (Mac-E1008331FDC96864)\nSystem shutdown begun: NO\nHibernation exit count: 0\n\nSystem uptime in nanoseconds: 1181858607489\nLast Sleep:      absolute      basetsc     basenano\n Uptime : 0x000001132c433446\n Sleep  : 0x0000000000000000 0x0000000000000000 0x0000000000000000\n Wake  : 0x0000000000000000 0x00000004793297ba 0x0000000000000000\nlast started kext at 366563964712: @filesystems.smbfs\t3.4.1 (addr 0xffffff7fa8e63000, size 434176)\nlast stopped kext at 485692278636: >usb.!UHostPacketFilter\t1.0 (addr 0xffffff800aa5b000, size 8192)\nloaded kexts:\n@filesystems.smbfs\t3.4.1\n@filesystems.exfat\t1.4\n|SCSITaskUserClient\t436.40.6\n>!APlatformEnabler\t2.7.0d0\n>AGPM\t119\n>X86PlatformShim\t1.0.0\n@filesystems.autofs\t3.0\n@fileutil\t20.036.15\n>!ATopCaseHIDEventDriver\t4020.6\n>!AHIDALSService\t1\n@kext.AMDRadeonX6000\t4.0.2\n@kext.AMDRadeonServiceManager\t4.0.2\n>!AUpstreamUserClient\t3.6.8\n>!AGraphicsDevicePolicy\t6.2.2\n>!A!IKBLGraphics\t16.0.1\n@AGDCPluginDisplayMetrics\t6.2.2\n>AGDCBacklightControl\t6.2.2\n>pmtelemetry\t1\n>LuaHardwareAccess\t1.0.16\n|IOUserEthernet\t1.0.1\n|IO!BSerialManager\t8.0.2f9\n>!AThunderboltIP\t4.0.3\n>BridgeAudioCommunication\t100.2\n>!AMCCSControl\t1.14\n>!AAVEBridge\t6.1\n>!AMuxControl2\t6.2.2\n@DontStealMacOS_X\t7.0.0\n>!AHV\t1\n>!ADiskImages2\t1\n>!A!ICFLGraphicsFramebuffer\t16.0.1\n>!ABridgeAudio!C\t100.2\n>!A!IPCHPMC\t2.0.1\n>!AGFXHDA\t100.1.431\n>!A!ISlowAdaptiveClocking\t4.0.0\n>usb.!UHostBillboardDevice\t1.0\n>BCMWLANFirmware4378.Hashstore\t1\n>BCMWLANFirmware4377.Hashstore\t1\n>BCMWLANFirmware4364.Hashstore\t1\n>BCMWLANFirmware4355.Hashstore\t1\n>!ABCMWLANBusInterfacePCIeMac\t1\n@filesystems.tmpfs\t1\n@filesystems.hfs.kext\t556.60.1\n@BootCache\t40\n@!AFSCompression.!AFSCompressionTypeZlib\t1.0.0\n@!AFSCompression.!AFSCompressionTypeDataless\t1.0.0d1\n@filesystems.apfs\t1677.60.23\n@private.KextAudit\t1.0\n>!ASmartBatteryManager\t161.0.0\n>!AACPIButtons\t6.1\n>!ASMBIOS\t2.1\n>!AACPIEC\t6.1\n>!AAPIC\t1.7\n@!ASystemPolicy\t2.0.0\n@nke.applicationfirewall\t310\n|IOKitRegistryCompatibility\t1\n|EndpointSecurity\t1\n@kext.triggers\t1.0\n>!AHIDKeyboard\t222\n>!AHS!BDriver\t4020.6\n>IO!BHIDDriver\t8.0.2f9\n>!AActuatorDriver\t4400.28\n>!AMultitouchDriver\t4400.28\n>!AInputDeviceSupport\t4400.35\n@kext.AMDRadeonX6100HWLibs\t1.0\n>!ABacklightExpert\t1.1.0\n>X86PlatformPlugin\t1.0.0\n@kext.AMDRadeonX6000Framebuffer\t4.0.2\n>!ASMBus!C\t1.0.18d1\n>!AGraphicsControl\t6.2.2\n|IOAVB!F\t900.12\n@kext.AMDSupport\t4.0.2\n@!AGPUWrangler\t6.2.2\n|IOAccelerator!F2\t439.52\n@!AGraphicsDeviceControl\t6.2.2\n|IO!BHost!CUARTTransport\t8.0.2f9\n|IO!BHost!CTransport\t8.0.2f9\n>IOPlatformPlugin!F\t6.0.0d8\n|IONDRVSupport\t585\n|IOAudio!F\t300.6.1\n@vecLib.kext\t1.2.0\n@plugin.IOgPTPPlugin\t900.11\n|IOEthernetAVB!C\t1.1.0\n>!A!ILpssUARTv1\t3.0.60\n>!A!ILpssUARTCommon\t3.0.60\n>!AOnboardSerial\t1.0\n@kext.AMDRadeonX6000HWServices\t4.0.2\n|IOGraphics!F\t585\n|IOSlowAdaptiveClocking!F\t1.0.0\n>usb.!UHub\t1.2\n>usb.cdc.ncm\t5.0.0\n>usb.cdc\t5.0.0\n>usb.networking\t5.0.0\n>usb.!UHostCompositeDevice\t1.2\n>!ABCMWLANCoreMac\t1.0.0\n|IOSerial!F\t11\n|IO80211!FV2\t1200.12.2b1\n>IOImageLoader\t1.0.0\n>corecapture\t1.0.4\n>!AThunderboltPCIDownAdapter\t4.1.1\n>!AThunderboltDPInAdapter\t8.1.4\n>!AThunderboltDPAdapter!F\t8.1.4\n>!AHPM\t3.4.4\n>!A!ILpssI2C!C\t3.0.60\n>!A!ILpssI2C\t3.0.60\n>!A!ILpssDmac\t3.0.60\n>!ABSDKextStarter\t3\n|IOSurface\t289.3\n|IOSkywalk!F\t1\n>mDNSOffloadUserClient\t1.0.1b8\n@filesystems.hfs.encodings.kext\t1\n>usb.!UVHCIBCE\t1.2\n>usb.!UVHCICommonBCE\t1.0\n>usb.!UVHCI\t1.2\n>usb.!UVHCICommon\t1.0\n>!AEffaceableNOR\t1.0\n|IOBufferCopy!C\t1.1.0\n|IOBufferCopyEngine!F\t1\n|IONVMe!F\t2.1.0\n>!AThunderboltNHI\t7.2.8\n|IOThunderbolt!F\t9.3.2\n|IOUSB!F\t900.4.2\n>usb.!UXHCIPCI\t1.2\n>usb.!UXHCI\t1.2\n>!AEFINVRAM\t2.1\n>!AEFIRuntime\t2.1\n>!ASMCRTC\t1.0\n|IOSMBus!F\t1.1\n|IOHID!F\t2.0.0\n$!AImage4\t3.0.0\n|IOTimeSync!F\t900.11\n|IONetworking!F\t3.4\n>DiskImages\t493.0.0\n|IO!B!F\t8.0.2f9\n|IOReport!F\t47\n|IO!BPacketLogger\t8.0.2f9\n$quarantine\t4\n$sandbox\t300.0\n@kext.!AMatch\t1.0.0d1\n|CoreAnalytics!F\t1\n>!ASSE\t1.0\n>!AKeyStore\t2\n>!UTDM\t511.60.2\n|IOUSBMass!SDriver\t184.40.6\n|IOSCSIBlockCommandsDevice\t436.40.6\n|IO!S!F\t2.1\n|IOSCSIArchitectureModel!F\t436.40.6\n>!AMobileFileIntegrity\t1.0.5\n@kext.CoreTrust\t1\n>!AFDEKeyStore\t28.30\n>!AEffaceable!S\t1.0\n>!ACredentialManager\t1.0\n>KernelRelayHost\t1\n|IOUSBHost!F\t1.2\n>!UHostMergeProperties\t1.2\n>usb.!UCommon\t1.0\n>!ABusPower!C\t1.0\n>!ASEPManager\t1.0.1\n>IOSlaveProcessor\t1\n>!AACPIPlatform\t6.1\n>!ASMC\t3.1.9\n|IOPCI!F\t2.9\n|IOACPI!F\t1.4\n>watchdog\t1\n@kec.pthread\t1\n@kec.corecrypto\t11.1\n@kec.Libm\t1\n"}

I had a similar issue on my work laptop. To fix it, I had to upgrade Crowdstrike.