I am not sure if this will help in this particular case, but I recall having this same issue some time ago and have had to change some settings under “Energy Saver” (now under “Battery”):
- “Put hard disks to sleep when possible”: Set to “Never”
- If the above does not work - “Prevent automatic sleeping on power adapter…”: Set to On
I cannot remember if this successfully resolved the issue though, but I hope that helps in your case.
