@vignesh said:
@tank0412 please see what's wrong with my kernel link download now
i already extract this img file but i have n idea about the ramdisk inside this file
Thanks
As i said earlier you got a dead boot.img due to inline kernel building.
So you should do all stuff manually.
And read this:
https://developer.ubuntu.com/en/start/ubuntu-for-devices/porting-new-device/
Device-specific changes
Adapt the Ubuntu kernel: building for an Android device