Good to see that the good old "laptop doesn't go to sleep on linux" problem has never truly gone away.
The HDMI issue is ever present. Intel has lately been dropping the ball significantly with their drivers, but at least it's not Nvidia this time, so that's a change!
But yes, I've had 4 Dell XPSes, all running windows, and all of them have had at least one episode of the laptop cooking itself inside a bag - I pull it out and it's literally burning to the touch, because some stupid event decided to wake it up, despite the lid being shut.
The good thing about Dell is that they ship with linux on certain configurations, so linux installs are very robust with the caveat that you will not see the agressive fan curves or higher tdp limits that you can get on windows.
And it wasn’t even just a recommendation, they declared it would void your warranty to do so! (In at least Australia, such an attempt to disclaim liability is illegal.)
FWIW, I have a spare Windows laptop, just over a year old, whose WiFi does not recover upon waking from sleep about eleven times out of a dozen.
OTOH, I have had both Windows and Linux laptops which have gotten uncomfortably warm when ‘asleep.’ And right now I have a Linux laptop which very rarely hangs on sleep and turns into space heater, not even turning off the monitor but becoming completely unresponsive.
Sleep is apparently a lot trickier a feature than it looks.
On desktop, sometimes there's no video signal after wake up.
The laptop doesn't support sleep at all, it's either connected standby = not sleeping, or hybernate. Windows says none of the proper S1-S3 states are supported by the computer.