Issues on GPD Win 4 (2023)

I am currently trying out ChimeraOS on the GPD Win 4 2023, with a Ryzen 7840U and 32GB of RAM, BIOS version 0.52 (latest as of writing this).

This was tested on ChimeraOS 45 build 1e44050.

I am facing two issues, one of which I find to be critical.

1) Suspend mode doesn't work

This is the biggest issue. Pressing the power button to put the device to sleep results in a black screen for a few seconds, then the device wakes itself back up. Which means that suspending the device does not work at all.

2) SD card slot is not detected properly at boot time

This is annoying, but not critical. When the device is rebooted and boots into the steam-plus session, the SD card isn't recognized (it is not displayed in the storage settings). To fix this, I need to switch into desktop mode, start Steam, then switch back into game mode. Then, my games on the SD card are displayed.