I have a Nintendo Switch 2 docked and hooked up to an ASUS gaming monitor (VG27AQL3A). The issue I'm experiencing is happening in Fire Emblem: Fortune's Weave, which is my first and only Nintendo Switch 2 exclusive game. I have not had this issue in the few Nintendo Switch 1 games I've played with this same setup.
The issue is this: when the screen fades to black as part of a loading screen transition in Fortune's Weave, my monitor will stay black and the game will continue running. In other words, it doesn't fade back in. I can still hear the game and it still receives my controller input. I'm unable to pull up my monitor's menu when it's like this. To fix it, I undock and redock the Switch 2, effectively restarting the video output. Curiously, having my monitor's menu open while going into an issue-prone transition will prevent the issue from happening.
Examples of loading screen transitions I've had the issue happen on: transitions between dialogue scenes, entering clash battles, training at the arena, fast-traveling around Dagsion, and entering temples. It happens most consistently when entering Kalla's Temple, so that's been my testing ground.
It doesn't always do it. Sometimes it seems like it only does it after the game has been running for a little bit, e.g. sometimes I can enter Kalla's Temple once without it happening and then the next time onward it will. But I've also had it happen immediately when loading my save file from the title screen-- instant black screen upon loading into the Obelisk Chamber.
I've been through all the standard troubleshooting steps with a Nintendo support agent with no success. I've also tried resetting my monitor's settings to default, which actually stopped the issue completely for about half a day until it started happening again. I've never seen a problem with this kind of mysterious behavior.
Worst of all, my brother has the exact same setup-- same console, same game, same model of monitor-- and he has not experienced this issue even once. Is my monitor defective? But how could it be triggered by events in a game? It's so strange. I haven't been able to find anything online about an issue like this.
What else can I do to troubleshoot? Any idea what could be producing this strange interaction? It's been very frustrating because I want to play this game on my nice big monitor and speakers, but I keep missing things happening behind the black screen and having to redock the Switch every few minutes.