Settings are OK, MacMini 2020 M1. Already before upgrade to the latest OS, begins to annoy me. Of course, drives are not removed. Different drives, most not older than one year, some in a raid volume, but all of them give the same error.
Mac mini, macOS 13.0
As I said ... all settings are OK (hard drives are not to go asleep, screens turn off) Already tried to change the settings and then re-change (after reboot), but issue stayed. There was no problem until about a month or two ago. No settings changed, no other cables.
Many have seen this issue and mostly suggest do not use sleep and just turn off display or use screen saver. This also assumes you have good cables.
I'm having the same experience, and, like you, I had no problems until about a month or two ago.
disk not ejected properly - every time Mac went asleep - sometimes the same warning for the same disk
