Can verify as a heavy Remote Play user that the update indeed breaks it entirely. Luckily, Sunlight/Moonlight still works just fine.

I've switched to sunshine/moonlight but it's really a bummer that Valve has dropped the ball so hard on this.

This is the best summary I could come up with:

Sadly, it seems Remote Play on Steam Deck is now broken.

Trying to play a game from a Linux or Windows host just results in a spinning Steam logo screen on the Steam Deck.

Weirdly, in my testing, the Steam Deck did get audio but no visual or input — the only choice is to press B to exit the stream.

The thing is, this has been a reported bug since at least February 3rd, when it was noticed from people on the Preview / Beta update channels with multiple confirmed reports.

Although, other reports have noted that it does work again in the current Release Candidate update available via Developer Options (for the next upcoming major update), which is not meant for any normal users so I wouldn't recommend changing it as enabling the advanced update channels could cause future problems.

Hopefully Valve will ensure this feature is fully tested when rolling out future updates to the Steam Deck.

The original article contains 243 words, the summary contains 159 words. Saved 35%. I'm a bot and I'm open source!

Gooooood damnit. I knew this would happen.

What is wrong with Valve lately? Steam Deck OLED still has garbage software/firmware that makes it’s wifi and USB-C very unreliable to use. How many months we still need to wait?

As a long time steam link user, I'm not surprised. Even the little steam link box was a hit or miss with each update, especially with AMD hardware.