I have tried LibreElec 10.0 Beta 1 and was very impressed at how much better my AMD (rx550) card performs in VAAPI now!
I use a Generic x86/x64 build HTPC as my PVR (TVHeadend) and after setting it all up, I was surprised that suspend no longer works for me, particularly as I had tried quite a few early nightlies of 9.80 and it had worked fine in those.
Re-installing 9.2.6 allows me to use the pc as before.
The pc suspends fine, either by selecting suspend via the menu or by automatically suspending when idle and not recording. I then resume it by pressing the on/off switch and it appears to resume fine but the screen display is frozen to whatever was on the display as the pc suspended. Also, I cannot SSH onto the box after the resume.
As SSH no longer connects at all after resume and the box appears to be completely hung, I'm a bit stuck as to how I can provide you with more information?
If I can do anything to get at least some logs from after the resume, then please let me know?