The Xiaomi monitor(A27Q) was connected to our Thor custom development board via HDMI, but it remained black-screened after startup.
The attachment contains a working log for one of the HKC devices, as well as a log showing that the Xiaomi monitor does not work. Please refer to them. In addition, there is also a Hisense monitor that is not functioning properly.
logs.zip (109.9 KB)
dmesg_hkc_ok.log
1995:[ 18.531298] nvidia-modeset: Loading NVIDIA UNIX Open Kernel Mode Setting Driver for aarch64 TempVersion Release Build (bugfix_main) (TEST@TEST-TESTPC) 2026年 01月 19日 星期一 22:49:34 CST
2047:[ 19.754998] nvidia-modeset: WARNING: HW supports 8 heads. Limiting to 4 heads
2048:[ 19.755947] nvidia-modeset: WARNING: GPU:0: The head configuration (0xff) is inconsistent with the number of heads (4)
2598:[ 26.940056] nvidia-modeset: GPU:0: Found active displayID: 0x200 initialized by UEFI on head 0
dmesg_xiaomi_fail.log
2897:[ 38.239979] nvidia-modeset: Loading NVIDIA UNIX Open Kernel Mode Setting Driver for aarch64 TempVersion Release Build (bugfix_main) (TEST@TEST-TESTPC) 2026年 01月 19日 星期一 22:49:34 CST
3141:[ 39.509397] nvidia-modeset: WARNING: HW supports 8 heads. Limiting to 4 heads
3143:[ 39.510351] nvidia-modeset: WARNING: GPU:0: The head configuration (0xff) is inconsistent with the number of heads (4)
Basic info:
custom board running Jetpack 7.1
# cat /etc/nv_tegra_release
# R38 (release), REVISION: 4.0, GCID: 43443517, BOARD: generic, EABI: aarch64, DATE: Wed Dec 31 00:15:19 UTC 2025
# KERNEL_VARIANT: oot
TARGET_USERSPACE_LIB_DIR=nvidia
TARGET_USERSPACE_LIB_DIR_PATH=usr/lib/aarch64-linux-gnu/nvidia
INSTALL_TYPE=openrm