My device is Tronsmart MXIII Plus, S812, under 108L1 Tronsmart firmware. Trying to run https://users.armbian.com/balbes150/s8xx/Armbian_21.02.0-trunk_Aml-s812_focal_current_5.10.0_xfce_desktop.img.xz using SD Kingston 32G Class 10, and all works fine at the first run - filesystem expands, desktop starts, all OK. But after any restart or shutdown boot hungs at the graphical desktop start - I see all boot messages, then blinking cursor at the black screen, then just black. I checked it three times, fresh image works, second run fails.
Buster image restarts successfully, but I prefer Focal just because use it on all other PCs.
Need some advice. How to get diagnostics ?