@lhelge said in Intermittent SD-card funtionality on Duet 3 mini 5+:
SD card 0 detected, interface speed: 0.2MBytes/sec
That’s a sign that the interface isn’t working correctly, should be 25MBytes/sec. See https://duet3d.dozuki.com/Wiki/SD_Card#Section_Troubleshooting_SD_Card_issues
If the socket or processor is faulty but the card is detected, it usually drops to 0.2Mbytes/sec.
I’d recommend replacement.
Ian