I'm currently building a custom cyanogen port (CM 12.1) for a china phone (Mann Zug 5S for that matter). I've been able to build a working recovery and I've been able to build a ROM. The ROM installed fine so far, but as it gets to booting, I'm stuck before the boot animation begins. Only a static image is displayed.
I tried to find some information via /proc/last_kmsg
(in CWMR), but I did not find any differences to the output with a working stock ROM.
I'd very grateful for any ideas or hints where to look and what to try to narrow down the issue.
Best regards, Phil