thor的ubuntu系统A/B chain，从B系统启动，修改A的设备树，切换a，a系统突然不能正常启动

Robotics & Edge Computing Jetson Systems Jetson Thor
1

thor的ubuntu系统A/B chain，从B(nvme0n1p2)系统启动，A区(nvme0n1p1)挂载到B系统的目录下，修改A区的设备树xyz_tegra264-p3971-camera-p3762-a00-overlay.dtbo，切换到a系统，首次能启动，之后a系统突然不能正常启动了。启动log是启动log-20260522.txt

系统分区如下

image
image659×362 8.53 KB

启动log-20260522.txt (352.5 KB)

3

hello mingkuo2010,

may I know what’s the modification you’ve done?
it’s doesn’t switch to slot-A, it’s UEFI to have a slot switching instead.
for instance,

NOTICE:  BL31: lts-v2.8.16(release):3ea5ab4
NOTICE:  BL31: Built : 15:31:46, Dec 30 2025
INFO: Initializing Hafnium (SPMC)
INFO: text: 0x1fdf010000 - 0x1fdf039000
INFO: rodata: 0x1fdf039000 - 0x1fdf043000
��                                                                                                         ��                                                                          e
�� Sys���tem ��6Cve��firm��rsio��ware��n hy��
�j-13��106C��a6d8��vers��a5-d��ion ��irty��hyj-��
�13a6��104C��d8a5��date��-dir�� 202��ty
��Switching the bootchain. Resetting th��Swit��e sy��chin��stem��g th�� in ��e bo��2 se��otch��cond��ain.��s.
�� Resetting the system in 2 seconds.
��Reset requested
Rebooting system ...
�������
4

为什么会出现这个问题？

5

hello mingkuo2010,

let’s root cause it, may I know what’s the modification you’ve done?

6

只是修改了A的设备数用于打开显示驱动

7

hello liuruixiang,

please share the modification you’ve done, you may sharing the diff for quick checking.