On Jan 2, 2021, at 9:55 AM, Fred <fred.fredex at gmail.com> wrote: > > Plantronics USB headset/microphone? > Yottamaster RAID-1 storage (USB3)? > Behringer USB audio interface? > Logitech wireless mouse? > Leopold USB keyboard? HID devices won’t go to sleep when the computer does, else they couldn’t wake it back up. (Keyboard & mouse, mainly.) The two audio interfaces may or may not sleep. Try checking their indicator LEDs when the computer goes to sleep: I’d expect them to visibly show that they’ve gone to sleep if they do. If they do, then on wake, they *could* do this sort of thing. I’d go after the RAID enclosure first, particularly if it’s hardware RAID, since that means it’s “clever,” thus suspect. Check that you’ve got the current firmware: https://www.yottamaster.com/?route=common/driver If it’s one of their JBOD models, requiring that you do some sort of software RAID, I’d expect a much different report in the kernel log if the corresponding software RAID component had a bug, which would mean it’s got some fundamental USB compatibility problem if that’s the device causing the problem. Again, check for firmware updates.