System no longer reachable - WIFI Disconnect - Base MAC address from BLK0 of EFUSE CRC error,

[dazrt]

The Problem

After a brownout the system is no longer reachable, but seems to work (takes pictures)

Device does not join WLAN, SD card and wlan.ini correct

Serial log gives clues:

normal startup, during startup

I (7806) MAIN: WLAN config loaded, init WIFI...
I (7826) WIFI: Manual interface config -> IP: 11.41.33.81, Gateway: 11.41.33.1,                                                 Netmask: 255.255.255.0
I (7856) wifi:wifi driver task: 3ffcfe88, prio:23, stack:6144, core=0
E (7856) system_api: Base MAC address from BLK0 of EFUSE CRC error, efuse_crc =                                                 0x8c; calc_crc = 0x4b
E (7856) system_api: Error reading BASE MAC address
E (7856) system_api: Base MAC address from BLK0 of EFUSE CRC error, efuse_crc =                                                 0x8c; calc_crc = 0x4b
E (7866) system_api: Error reading BASE MAC address
I (7896) wifi:wifi firmware version: 91b9630

later on

I (7996) phy_init: phy_version 4780,16b31a7,Sep 22 2023,20:42:16
E (7996) system_api: Base MAC address from BLK0 of EFUSE CRC error, efuse_crc =                                                 0x8c; calc_crc = 0x4b
E (8006) system_api: Base MAC address from BLK0 of EFUSE CRC error, efuse_crc =                                                 0x8c; calc_crc = 0x4b
I (8076) wifi:mode : sta (00:00:00:00:00:00)

and later on:

> W (22236) WIFI: Disconnected (2, Auth fail)
> W (24666) WIFI: Disconnected (205)
> W (27106) WIFI: Disconnected (201, No AP)

seems that default MAC address was corrupted.

Web search seems not to show a way to repair

Version

v15.7.0

Logfile

System not Accessible by WLAN

Expected Behavior

Is there a way to recover from that?
For example:
Is there a way to randomly set a MAC if an CRC error happed?
Is there is an option to provide a MAC via wlan.ini?

Screenshots

No response

Additional Context

seems that MAC issue is not uncommon:
https://github.com/mmakaay/arduino-esp32-unicore-no-mac-crc
https://community.platformio.org/t/espressif-32-and-ignore-efuse-mac-crc/42157

unfortunately beyond my capacity to change the code in the repository and do test build ....

[dazrt]

playing with espefuse.py tool shows culprit:

Mac fuses:
MAC (BLOCK0)                                       MAC address
   = 8c:ce:5e:8d:b9:b4 (CRC 0x8c invalid - calculated 0x4b) R/W
MAC_CRC (BLOCK0)                                   CRC8 for MAC address                               = 140 R/W (0x8c)

unfortunately these are on time time programable....

so as suggested:

• find option to ignore CRC or set custom MAC

[SybexX]

in sdkconfig.defaults or sdkconfig.esp32cam.defaults

#
# MAC Config
#
CONFIG_ESP_MAC_ADDR_UNIVERSE_WIFI_STA=y
CONFIG_ESP_MAC_ADDR_UNIVERSE_WIFI_AP=y
CONFIG_ESP_MAC_ADDR_UNIVERSE_BT=y
CONFIG_ESP_MAC_ADDR_UNIVERSE_ETH=y
CONFIG_ESP_MAC_UNIVERSAL_MAC_ADDRESSES_FOUR=y
CONFIG_ESP_MAC_UNIVERSAL_MAC_ADDRESSES=4
# CONFIG_ESP32_UNIVERSAL_MAC_ADDRESSES_TWO is not set
CONFIG_ESP32_UNIVERSAL_MAC_ADDRESSES_FOUR=y
CONFIG_ESP32_UNIVERSAL_MAC_ADDRESSES=4
CONFIG_ESP_MAC_IGNORE_MAC_CRC_ERROR=y              #<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
# CONFIG_ESP_MAC_USE_CUSTOM_MAC_AS_BASE_MAC is not set
# end of MAC Config

[dazrt]

thank you, so in sdkconfig.defaults or sdkconfig.esp32cam.defaults

CONFIG_ESP_MAC_IGNORE_MAC_CRC_ERROR=y
would do as well?
If yes, would it be possible to put it in the official build?

[SybexX]

Have you tried whether this change also eliminates this problem?
I found this info after a short search on the Internet, but I don't know if this change is only required.

manual-setup
remote-setup
update

[dazrt]

Thank you, the change eliminates the problem.
I used the "manual-setup"
In the startup/serial terminal still CRC error mentioned, but the ESP does connect to WiFi.