Also, I totally understand the issue of support in open source projects. I maintain open source software of my own and respect the time and effort it takes. That being said I'm willing to help debug this regression, however I have no idea how to get started other than what I mentioned in my original post (e.g. PR #6886 possibly being related to the issue). If you have any suggestions or documentation I can follow to get started debugging this I'm happy to help.

Thanks @Igor, I think I was on the edge kernel due to my attempts to fix this issue when it first occurred so I downgraded back to the current (v6.6.60) kernel. $ uname -a Linux snapclient-kitchen 6.6.60-current-rockchip64 #1 SMP PREEMPT Fri Nov 8 15:28:28 UTC 2024 aarch64 GNU/Linux Unfortunately the issue is still present. $ aplay -l aplay: device_list:274: no soundcards found... $ sudo echo 15 > /sys/class/gpio/export -bash: /sys/class/gpio/export: Permission denied $ sudo cat /sys/class/gpio/export cat: /sys/class/gpio/export: Permission denied

@ArmBoy1988 seems You were right: got SK Hynix module, now R/W is almost the same, 400MB/s (not so bad, remembering that OPi has PCIe Gen2). Will test also with encrypted partition.

Providing logs with armbianmonitor -u helps with troubleshooting and significantly raises chances that issue gets addressed.

This is highly expected. We don't even try to support EDGE kernels at end user level. This kernel is EOL and will be replaced with a v6.12.y in next year Q1 release. But we can't secure you that this problem will be fixed as support budget is negative (we have some support for other boards from Radxa) and we, nobody in the team, can't afford to spent days or weeks resolving this. However, you are welcome to spent at least time and join debugging this - problems is as yours as it is ours. The reasons why we keep build framework in a good state is that you can help resolving problems https://github.com/armbian/build We are and will always be too small to face this mountain of problems that are generated by everyone, compensated by no-one. Not by us, but all community that is poking kernels, and hardware dealers that are flooding this market.