Comment 7 for bug 1757445

After some tests I discovered that, in my case, the locking is related to wireless. By disabling the wireless network the problem disappears, it suspends and returns normally.
So, as a test, I deactivated the power saving, as suggested in the link "https://gist.github.com/jcberthon/ea8cfe278998968ba7c5a95344bc8b55" and everything went smoothly.