After some experimentation, I realized that the full xfce images are working fine, likely because NetworkManager is built in. The minimal CLI images, even after switching to NetworkManager per the instructions here, never worked for me to retain Wifi after a reboot. I'm going through the process of removing the XFCE desktop from my install as CPU utilization in Klipper is very high otherwise.

FWIW, I am running -edge kernel from armbian with respective dtb (linux-dtb-edge-rockchip64 package), and it's quite stable. vmlinuz-6.18.0-rc6-edge-rockchip64 dtb-6.18.0-rc6-edge-rockchip64 🤞

For information: First reboot and crash same that before use rk3399-kobol-helios64.dtb-6.12.xx-L2-hs400-opp. 😞 Back to 6.12.58, rk3399-kobol-helios64.dtb-6.12.xx-L2-hs400-opp and freeze to this setting Me and my brother have helios64 with 6.18.10 Kernel : RAID 10 / LVM / LUKS and crash always when "cryptsetup open..." start Crash when many I/O Crash when use Full CPUs With rk3399-kobol-helios64.dtb-6.12.xx-L2-hs400-opp and Kernel 6.12.58 or 6.12.(XX below): Me, never crash but I reboot often and power off often for personal choice. My brother have uptime upper than 100 or 200 days with problem, freeze or crash Bye

Hi everybody, I running Helios64 with kernel 6.12.58 since a long time and the prahal dtb file rk3399-kobol-helios64.dtb-6.12.xx-L2-hs400-opp and my helios64 work well. Today, Armbian upgrade to 6.18.10 kernel. Is this update use the same change or patch like in rk3399-kobol-helios64.dtb-6.12.xx-L2-hs400-opp ? Is rk3399-kobol-helios64.dtb-6.12.xx-L2-hs400-opp work with 6..18.10 kernel ? Is I must to downgrade to 6.12.58 kernel with rk3399-kobol-helios64.dtb-6.12.xx-L2-hs400-opp and freeze at this kernel version ? Thanks for answer.

@naceur abdelkader Your post has nothing to do with Armbian. Please find a more appropriate site to ask your question. This site is for Armbian linux.