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In Christmas and New Year time: How to understand panic full log in iPhone and iPad
There was a bit of discussion about this on the forum a while ago, but there's still a lot of confusion about it. So I dispel understatements and myths (about disappearing elements), hints like "tell me how to replace this thermalmonitord" - by the way: Thermal Monitor Daemon is a logical function written in SWIFT lang.
As usual, graphical version on my blog studionapraw.pl whom I also invite in every other matter.
iPhone Kernel Panic Full Log, because that's the full name of it (and obligatory for iPad or Mac), is a record of the state of the kernel and a log of crashes in the system of your device. However, this is not a complete repository of the problem. These are still being created by the code engineers in Cupertino and more importantly, they are constantly changing depending on the needs of the hardware resources under study.
Panic full or crash log is documentation of events in unix like systems ( your IOS is a Unix based OS )
By analogy with my experience with Unix machines, the Panic Full Log readability problem is no longer scary. Everything started to fall into place when I connected common features, previously invisible due to the encoding of important information. For now, I seem to be compatible with version 16 and I think I know where to look when 17 comes out ( Jonathan, I hope you're not reading this
).
The Panic Full Log (or crash.log - depending on the device) occurs whenever the system kernel has a hardware problem with a driver function, data structure or sensor flow. In many cases, you can do without it, but for some time (iOS 14.5) it is reason enough to trigger the restart procedure in a few cases (... it seems to me that it is more economical than technological).
The location has not changed for many releases, go to settings --->> privacy and protection -->> analytics and enhancements -->> analytics data. The data directory will contain all analytical reports, feedbacks, measurements and other alphabetically sorted files. Find the letter "P" - Panic.Log or Panic.Full followed by numbers (date, time).
Reading the log record is easy, although individual sections may change their position depending on the version. There should be no difficulty in locating individual places. In case of doubt, write me [mailto=tojaert@studionapraw.pl]e-mail [/url] I will try give a hand.
It starts with locating the report in time space. Then present the boundary conditions of the device and indicate the location of the problem. It gets important from the "panicString" section. There you will find a fairly clear description of the problem with its memory signature. Below, it's just the coded information of the design debugger, memory dump and other details important for system engineers. In the file below, two examples: watch (watchOS is also pro'unixOS) on the left and phone on the right. Marked sections will clear your doubts.
As a side note, I would like to point out two things - the sections are divided according to the "bit information" (for Swift programmers) and the reservation that the records of such a report should (in this section) be treated as a guideline, nothing more. The structure of the report and its code change together with the release of the system version.
ANS2 Recoverable Panic Full log
Apple NAND Storage v.2 - NORD/NAND data storage controller. The log may indicate damage to the chip itself. Example of a short circuit or harmonic distortion of the control/logic signal.
AOP NMI POWER (Non-Maskable Interrupt)
A type of IRQ with emergency permissions. It has priority in memory shares and the right to interrupt lower priority transmissions. Everything indicates that it is related to the AP.SEP "Secure Enclave" mechanism, the assembly of the front Face.ID sensors and the front camera.
AOP Panic Full log
AOP is a whole subset of function types. Information about what specifically AOP refers to is not widely known. However, information has leaked that the entire segment (APsoc) of the processor is dedicated to overseeing the AOP function.
AppleSoc: Hot Hot Hot
alarm message. Indicates a critical temperature reading from the internal self-monitoring mechanism of the main processor and RAM. By the way, if you see it, it's probably too late.
i2c (i2c0-5) Panic Full log
master-slave communication protocol. There will be more about this in a while, in the theoretical section of the studionarpaw.pl blog due to the large scope of the issue. For now, let it suffice that the MASTER device in this architecture is always the main processor, and the receivers (SLAVE) are peripheral and subsystem controllers. If the instruction does not arrive or the signal checksum is missing, there must be something wrong physically "in the route".
SEP.Rom Panic Full log
The Secure Enclave Processor (AP.SEP) is a dedicated processor layer for storing ultra-protected data. Indicates faults in the transmission space or physical layer of the devices of the "Secure" subsystem. The subsystem consists of the main processor, Face.ID/Touch.ID team devices, NAND, Baseband, Stockholm and eeprom.
SMC Assertion Failed
The SMC is a familiar device to all Mac and MacBook technicians. In the iPad and iPhone, the SMC device is also present, but from model 11, integrated into on-chip PMU, later moved to the CPU unit. This type of error usually has the string BSC FAILURE. On models 13 and up, the bug causes system reboots every 180 seconds ( appears to be a new version of Watchdog ). Always occurs with a sensor array parameter. (FOR models 13 and more only)
Watchdog Timeout Thermalmonitord Missing Sensor (no sensor)
the Watchdog system process has a programmed cycle of examining external sensor data. The cycle is cyclical, as the name suggests, and has a value of 180 seconds. If the measurement interval is not interrupted by incoming data (confirmed), the system will initiate a failover, hoping that restarting the system and the current activation of the sensor will solve the problem. To find a missing sensor signal, analyze the incoming data from Panic.Log. (FOR 7-12pro/Max models only)
PRSo - charging port voltage sensor (room=dock)
Mic1 - sensor (unknown function) of the lower connecting tape (room=dock_flex)
Mic2 - sensor (unknown function) of the upper connecting tape (room=power_flex/strobe)
TG0V - battery voltage sensor (room=battery)
TG0B - battery temperature sensor (room=battery)
TT0D-TT9D - screen driver sensor (iPads only)
Watchdog Timeout No Check In
The timeout process checks the overall functionality of the system. If the time between "sub-checks" exceeds the maximum value, the device will reboot to try to fix it. Easy to trace if the Springboard, logd, wifid or Thermalmonitord manual does not mention the physical location of the sensor. I assume that in this case it is a software component. Especially visible in the first releases of version 16.0. Since version 16.2 I have not recorded any case (any conclusions? )
(FOR 7-12pro/Max models only)
Undefined Kernel Instruction (unidentified kernel function)
The kernel is what the name implies (the heart of the system). Unidentified instructions, functions, and arrays are a constant part of the system engineer's fun. If you encounter this error, it is most likely related to the system itself or an incompatible application (which has happened before).
Finally, a few more words about robots (useful applications). There are several in use. In my opinion, the most popular one still shows the same group of errors (although maybe I'm not experienced enough to judge that). The charging port and power strip should always be there. In another popular software (3uT) only the number of logs is counted, but maybe it's only temporary. The information is also the same: "visit a repair shop".
I hope I have shed some light on the problem. If it has a positive impact on the quality of devices repaired by you (dear reader), leave a comment and share it. I will be very pleased that my work is expected.
- best regards,
In Christmas and New Year time: How to understand panic full log in iPhone and iPad
There was a bit of discussion about this on the forum a while ago, but there's still a lot of confusion about it. So I dispel understatements and myths (about disappearing elements), hints like "tell me how to replace this thermalmonitord" - by the way: Thermal Monitor Daemon is a logical function written in SWIFT lang.
As usual, graphical version on my blog studionapraw.pl whom I also invite in every other matter.
iPhone Kernel Panic Full Log, because that's the full name of it (and obligatory for iPad or Mac), is a record of the state of the kernel and a log of crashes in the system of your device. However, this is not a complete repository of the problem. These are still being created by the code engineers in Cupertino and more importantly, they are constantly changing depending on the needs of the hardware resources under study.
Panic full or crash log is documentation of events in unix like systems ( your IOS is a Unix based OS )
By analogy with my experience with Unix machines, the Panic Full Log readability problem is no longer scary. Everything started to fall into place when I connected common features, previously invisible due to the encoding of important information. For now, I seem to be compatible with version 16 and I think I know where to look when 17 comes out ( Jonathan, I hope you're not reading this
).
The Panic Full Log (or crash.log - depending on the device) occurs whenever the system kernel has a hardware problem with a driver function, data structure or sensor flow. In many cases, you can do without it, but for some time (iOS 14.5) it is reason enough to trigger the restart procedure in a few cases (... it seems to me that it is more economical than technological).
The location has not changed for many releases, go to settings --->> privacy and protection -->> analytics and enhancements -->> analytics data. The data directory will contain all analytical reports, feedbacks, measurements and other alphabetically sorted files. Find the letter "P" - Panic.Log or Panic.Full followed by numbers (date, time).
Reading the log record is easy, although individual sections may change their position depending on the version. There should be no difficulty in locating individual places. In case of doubt, write me [mailto=tojaert@studionapraw.pl]e-mail [/url] I will try give a hand.
It starts with locating the report in time space. Then present the boundary conditions of the device and indicate the location of the problem. It gets important from the "panicString" section. There you will find a fairly clear description of the problem with its memory signature. Below, it's just the coded information of the design debugger, memory dump and other details important for system engineers. In the file below, two examples: watch (watchOS is also pro'unixOS) on the left and phone on the right. Marked sections will clear your doubts.
As a side note, I would like to point out two things - the sections are divided according to the "bit information" (for Swift programmers) and the reservation that the records of such a report should (in this section) be treated as a guideline, nothing more. The structure of the report and its code change together with the release of the system version.
TYPES OF PANIC FULL LOG AND THEIR DECRIPTED INDICATIONS
ANS2 Recoverable Panic Full log
Apple NAND Storage v.2 - NORD/NAND data storage controller. The log may indicate damage to the chip itself. Example of a short circuit or harmonic distortion of the control/logic signal.
AOP NMI POWER (Non-Maskable Interrupt)
A type of IRQ with emergency permissions. It has priority in memory shares and the right to interrupt lower priority transmissions. Everything indicates that it is related to the AP.SEP "Secure Enclave" mechanism, the assembly of the front Face.ID sensors and the front camera.
AOP Panic Full log
AOP is a whole subset of function types. Information about what specifically AOP refers to is not widely known. However, information has leaked that the entire segment (APsoc) of the processor is dedicated to overseeing the AOP function.
AppleSoc: Hot Hot Hot
alarm message. Indicates a critical temperature reading from the internal self-monitoring mechanism of the main processor and RAM. By the way, if you see it, it's probably too late.
i2c (i2c0-5) Panic Full log
master-slave communication protocol. There will be more about this in a while, in the theoretical section of the studionarpaw.pl blog due to the large scope of the issue. For now, let it suffice that the MASTER device in this architecture is always the main processor, and the receivers (SLAVE) are peripheral and subsystem controllers. If the instruction does not arrive or the signal checksum is missing, there must be something wrong physically "in the route".
SEP.Rom Panic Full log
The Secure Enclave Processor (AP.SEP) is a dedicated processor layer for storing ultra-protected data. Indicates faults in the transmission space or physical layer of the devices of the "Secure" subsystem. The subsystem consists of the main processor, Face.ID/Touch.ID team devices, NAND, Baseband, Stockholm and eeprom.
SMC Assertion Failed
The SMC is a familiar device to all Mac and MacBook technicians. In the iPad and iPhone, the SMC device is also present, but from model 11, integrated into on-chip PMU, later moved to the CPU unit. This type of error usually has the string BSC FAILURE. On models 13 and up, the bug causes system reboots every 180 seconds ( appears to be a new version of Watchdog ). Always occurs with a sensor array parameter. (FOR models 13 and more only)
Watchdog Timeout Thermalmonitord Missing Sensor (no sensor)
the Watchdog system process has a programmed cycle of examining external sensor data. The cycle is cyclical, as the name suggests, and has a value of 180 seconds. If the measurement interval is not interrupted by incoming data (confirmed), the system will initiate a failover, hoping that restarting the system and the current activation of the sensor will solve the problem. To find a missing sensor signal, analyze the incoming data from Panic.Log. (FOR 7-12pro/Max models only)
PRSo - charging port voltage sensor (room=dock)
Mic1 - sensor (unknown function) of the lower connecting tape (room=dock_flex)
Mic2 - sensor (unknown function) of the upper connecting tape (room=power_flex/strobe)
TG0V - battery voltage sensor (room=battery)
TG0B - battery temperature sensor (room=battery)
TT0D-TT9D - screen driver sensor (iPads only)
Watchdog Timeout No Check In
The timeout process checks the overall functionality of the system. If the time between "sub-checks" exceeds the maximum value, the device will reboot to try to fix it. Easy to trace if the Springboard, logd, wifid or Thermalmonitord manual does not mention the physical location of the sensor. I assume that in this case it is a software component. Especially visible in the first releases of version 16.0. Since version 16.2 I have not recorded any case (any conclusions? )
(FOR 7-12pro/Max models only)
Undefined Kernel Instruction (unidentified kernel function)
The kernel is what the name implies (the heart of the system). Unidentified instructions, functions, and arrays are a constant part of the system engineer's fun. If you encounter this error, it is most likely related to the system itself or an incompatible application (which has happened before).
Finally, a few more words about robots (useful applications). There are several in use. In my opinion, the most popular one still shows the same group of errors (although maybe I'm not experienced enough to judge that). The charging port and power strip should always be there. In another popular software (3uT) only the number of logs is counted, but maybe it's only temporary. The information is also the same: "visit a repair shop".
I hope I have shed some light on the problem. If it has a positive impact on the quality of devices repaired by you (dear reader), leave a comment and share it. I will be very pleased that my work is expected.
- best regards,
