Power up timeout on POE ISO board

[io]

Hallo my board begun behaving herratically then got this error at startup:

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E (124) lan87xx: lan87xx_pwrctl(409): power up timeout
E (125) lan87xx: lan87xx_init(491): power control failed
E (125) esp_eth: esp_eth_driver_install(223): init phy failed
[   131][E][ETH.cpp:311] begin(): esp_eth_driver_install failed
I moved back to a basic example and the error is still there, has the Ethernet module been compromised?
Example:

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/*
    This sketch shows the Ethernet event usage

*/

#include <ETH.h>

static bool eth_connected = false;

void WiFiEvent(WiFiEvent_t event)
{
  //debug.println("info: WiFiEvent Received");
  switch (event)
  {
  case ARDUINO_EVENT_ETH_START:
    debug.println("ETH Started");
    // set eth hostname here
    ETH.setHostname("esp32-ethernet");
    break;
  case ARDUINO_EVENT_ETH_CONNECTED:
    debug.println("ETH Connected");
    break;
  case ARDUINO_EVENT_ETH_GOT_IP:
    debug.print("ETH MAC: ");
    debug.print(ETH.macAddress());
    debug.print(", IPv4: ");
    debug.print(ETH.localIP());
    if (ETH.fullDuplex())
    {
      debug.print(", FULL_DUPLEX");
    }
    debug.print(", ");
    debug.print(ETH.linkSpeed());
    debug.println("Mbps");
    eth_connected = true;
    break;
  case ARDUINO_EVENT_ETH_DISCONNECTED:
    debug.println("ETH Disconnected");
    eth_connected = false;
    break;
  case ARDUINO_EVENT_ETH_STOP:
    debug.println("ETH Stopped");
    eth_connected = false;
    break;
  default:
    break;
  }
}

void testClient(const char * host, uint16_t port)
{
  Serial.print("\nconnecting to ");
  Serial.println(host);

  WiFiClient client;
  if (!client.connect(host, port)) {
    Serial.println("connection failed");
    return;
  }
  client.printf("GET / HTTP/1.1\r\nHost: %s\r\n\r\n", host);
  while (client.connected() && !client.available());
  while (client.available()) {
    Serial.write(client.read());
  }

  Serial.println("closing connection\n");
  client.stop();
}

void setup()
{
  Serial.begin(115200);
  WiFi.onEvent(WiFiEvent);
  ETH.begin();
}


void loop()
{
  if (eth_connected) {
    testClient("google.com", 80);
  }
  delay(10000);
}
Have tried a wifi example and it does work so the rest of the board seems to be ok.

[LubOlimex]

Can be a driver issue, here a user seems to have encountered similar issue and it was related to the software:

https://github.com/espressif/esp-idf/issues/5425

Maybe try adding some delays in the code.

Did you recently update the Arduino IDE package?