Oops, sorry for the mixup: “IA” is in fact “AI”. I am French, where “Artificial Intelligence” is the other way around: “Intelligence Artificielle”, hence the IA…
You indeed seem to have a different issue than mine, unfortunately.
I usually get more useful answers, for Bazzite issues, using Gemini 3 Pro than GPT 5.2 Thinking. Not a Google fan, that is just my experience.
Here is what it says about your log, worth a try, maybe.
The most critical error in the log is: Feb 13 23:32:05 bazzite systemd-sleep[8134]: Failed to freeze unit 'user.slice': Connection timed out
This happened exactly 60 seconds after the sleep process started. The system tried to freeze all open applications (Steam, Discord, Browser, etc.) but something refused to stop. When the timeout hits, the kernel forces sleep anyway, which often crashes the NVIDIA driver, resulting in a black screen on wake.
1. Close heavy apps before sleep: As a test, have the user close Steam, Discord, and any web browsers completely before clicking “Sleep”. If it wakes up fine, one of those apps is the culprit (often hardware acceleration in browsers or Steam downloads).
2. Check for “Zombie” processes: Before sleeping, run this command to see if any process is stuck in a “Uninterruptible” (D) state:
ps -eo state,pid,cmd | grep "^D"
If anything shows up there, that process is likely holding the lock.