As mentioned in my post, the camera works more or less reliable since I run the suggested commands. Though the camera takes ages to start, I’d suggest to close this issue.
Thanks for reconfirming that @jollajo, and I’m glad it’s (more or less) reliable now. In that case I’ll do as you suggest and close this topic.
If it recurs, or if anyone wants to add more comments later for whatever reason, please direct message me and I can reopen it again.