I have read that that is an issue. My own Pinetab 2 has a moral puncture and does not suspend at all. I probably fiddled too much with the config.
On the forum someone suggested to unload the driver first.
Happy to report that the Wifi on the Pinetab 2 now works. Still early days but I am using it for a few hours now and it works.
Details in the forum
https://forum.pine64.org/showthread.php?tid=18575&pid=121457#pid121457
Not a perfect fit but Firefox can annotate PDFs out of the box. Maybe in some cases that is helpful ?
This looks incredibly polished, given that it is a quite new development. I did not even know that you could use a Windows Laptop as a display/keyboard 😀
It also has a switch to enable SD-card boot first. There is a bit of info on the wiki
First impressions of the new Pinetab2 after one day
Genode OS is adding Pine Allwinner A64 with the intention to eventually support the PinePhone by end of 2021.
A detailed blog describes the journey.