Hello, I'm trying porting ubports (with halium-11) to my xiaomi mix 2s, and lightdm does not start with

[+0.36s] WARNING: DisplayServer: Failed to write to compositor: Broken pipe

and in unity-system-compositor.log:

[2022-09-10 03:18:24.665583] <information> mirserver: Mir version 1.8.1
[2022-09-10 03:18:24.674380] <information> mirserver: Initial display configuration:
[2022-09-10 03:18:24.674423] <information> mirserver: * Output 1: LVDS connected, used
[2022-09-10 03:18:24.674435] <information> mirserver: . |_ Physical size 68x136mm
[2022-09-10 03:18:24.674445] <information> mirserver: . |_ Power is on
[2022-09-10 03:18:24.674454] <information> mirserver: . |_ Current mode 1080x2160
[2022-09-10 03:18:24.674463] <information> mirserver: . |_ Preferred mode 1080x2160
[2022-09-10 03:18:24.674472] <information> mirserver: . |_ Orientation normal
[2022-09-10 03:18:24.674485] <information> mirserver: . |_ Logical size 1080x2160
[2022-09-10 03:18:24.674493] <information> mirserver: . |_ Logical position +0+0
[2022-09-10 03:18:24.674502] <information> mirserver: * Output 2: DisplayPort disconnected
[2022-09-10 03:18:24.674511] <information> mirserver: * Output 3: Virtual disconnected
*** Error in `unity-system-compositor': corrupted double-linked list: 0x000000003a375fb0 ***

rootfs is obtained from https://ci.ubports.com/job/xenial-hybris-android9-android11-rootfs-arm64/ build #632

any ideas? or should I provide some other logs?
thanks!