Problems after power on/off

For power saving, i turn off my entertainment system (incl. hifiberry) when not used (sometimes for many days/weeks).

Whenever I turn power on, I have a problem which renders device unavailable. Seems like eeprom issue others are also experiencing? Tried reinstalling latest hifiberry os, does not solve the issue:

- In the web interface, DSP program is displayed as "unknown".

- There is no sound output via TosLink (didn't check analog out)

- HiFi berry is visible as airplay destination, but does not output any sound.

- Via SSH, i'm getting following output:

```

# dsptoolkit get-checksum

2A97BD301C77C59FF15F5763F1D7EBFA

# dsptoolkit store

(...)
xml.parsers.expat.ExpatError: syntax error: line 1, column 0

```

To restore functionality, I do the following:

- install stock "DAC+ DSP version 12" program

- verify checksum: dsptoolkit get-checksum shows 7B03B17AD5B6B1A0E0DACB29BF31F024, as expected

- dsptoolkit store still fails

- store sound adjustments (via web gui) ends with "Storing sound adjustments failed"

- General -> Power -> Restart

- DSP program is displayed correctly via web gui, `dsptoolkit get-checksum` displays correct hash, `dsptoolkit store` works

- sound output via TosLink works
- device is not visible on iPhone/iPad/Mac as airplay target

Jan-Willem Arnold December 01, 2022 09:59

Is your power supply clean and stable at startup? How about shutdown? What happens if you only connect the beocreate after the supply is switched on for about 5 secs?

Often the SD card seems to be the cause of all kind of strange behaviour.

I had some issues that magically disappeared after spending little money on a fast , 'extreme', 'endurance' card.

Problems after power on/off

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