Don't know if anyone has tried or if it's well known, but I did. There was a brief period where I could wake it with my Xbox series controllers but then valve pulled the feature for bugs which I never experienced.
I first tried with the dongle which wakes it as expected on my Linux desktop and my steam deck. Then I paired it with Bluetooth mode and was able to wake it without issue.
Is it the LCD model? Because valve pulled an experimental feature. It momentarily worked on my Xbox series controllers but then it was pulled. I don't know why, people claim the BT version can't support wake but that's obviously false.