@TermuxnTR its from 20.04 , 16.04 is not booting

@TermuxnTR "I'm at the Plymouth boot screen (Ubuntu Touch logo with 5 dots), but the device reboots after that. Kernel and initrd are working fine, but the Android LXC container seems to fail to start."

@TermuxnTR said:
thank for your suggestion
i will try it

@TermuxnTR both

Hi, im come back to UBports after install stock rom and i have bootloop in my device, when i try remove that word in cmdline finally it works (stuck at initrd failed)

how i can do for get that work back!?

@k.nacke Thank for the hint

Hi everyone

I'm working on porting Ubuntu Touch (20.04) to the Samsung Galaxy Tab A7 Lite (gta7litewifi) using Halium 12 and i stuck at Ubuntu Logo

Here is my repo (its can see usb network):
https://gitlab.com/hahupung/samsung-galaxy-tab-a7-lite.git

Logs for reference:

Log: https://gist.github.com/dev686868/c364c5002d99957fbf57c2106cbd9074

Thanks in advance for any insights!

i got an error when try starting Ubuntu touch , i saw logo UBport but reboot few second
here is deviceinfo :

ydeviceinfo_name="Samsung Galaxy Tab A7 Lite"
deviceinfo_manufacturer="Samsung"
deviceinfo_codename="gta7litewifi"
deviceinfo_arch="aarch64"

deviceinfo_halium_version="12"
deviceinfo_kernel_source="https://github.com/gta7lite/android_kernel_samsung_ot8.git"
deviceinfo_kernel_source_branch="halium-12"
deviceinfo_kernel_defconfig="gta7litewifi_defconfig halium.config"
deviceinfo_kernel_clang_compile="true"
deviceinfo_kernel_llvm_compile="true"
deviceinfo_kernel_image_name="Image.gz"

deviceinfo_kernel_cmdline="bootopt=64S3,32N2,64N2 systempart=/dev/mapper/system console=tty0 androidboot.selinux=permissive"

deviceinfo_bootimg_header_version="2"
deviceinfo_bootimg_partition_size="33554432"
deviceinfo_bootimg_os_version="12"
deviceinfo_bootimg_os_patch_level="2021-09"
deviceinfo_ramdisk_compression="lz4"
deviceinfo_flash_pagesize="2048"
deviceinfo_flash_offset_base="0x00000000"
deviceinfo_flash_offset_kernel="0x40080000"
deviceinfo_flash_offset_ramdisk="0x51b00000"
deviceinfo_flash_offset_second="0x00f00000"
deviceinfo_flash_offset_tags="0x47880000"
deviceinfo_flash_offset_dtb="0x47c80000"
deviceinfo_dtb="gta7litewifi_dtb"
deviceinfo_use_mir_gles2="false"
deviceinfo_use_alternative_fb_detection="true"
deviceinfo_graphics_drm_device="/dev/dri/card0"
deviceinfo_gralloc="gbm"
deviceinfo_ubuntu_touch_release="24.04-1.x"

deviceinfo_rootfs_image_sector_size="4096"
deviceinfo_system_partition_size="3600M"
deviceinfo_rootfs_image_size="1310720"

and log

[mirserver] Starting
[mirserver] Selected driver: ubports:android2 (version 1.8.0)
library "libpq_cust.so" not found
library "libGL.so" not found
[info] No device yaml config found!
I/O warning: faied to load "/vendor/etc/cust_pq.xml"
[android/server] Error opening HWC HAL
[android/server] hotplug: Adding display 0
[android/server] Found 1 matching egl configs
[android/server] Selected Mir display format: 1
[GLRenderer] EGL vendor: Android
[GLRenderer] GL vendor: Imagination Technologies
[GLRenderer] GL renderer: PowerVR Rogue GE8320
[GLRenderer] GL version: OpenGL ES 3.2
[mirserver] Initial display configuration:
  Output 1: LVDS connected
  Resolution: 800x1340
[android/server] error during hwc set(). rc = 6
ERROR: gralloc_module.cpp(75): buffer allocation failed
errno = -5 (Unknown error)
free(): invalid pointer

[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/51-lomiri-greeter.conf
[+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/52-ubuntu-touch.conf
[+0.00s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf.d/90-phablet.conf
[+0.00s] DEBUG:   [SeatDefaults] is now called [Seat:*], please update this configuration
[+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf
[+0.00s] DEBUG: Registered seat module local
[+0.00s] DEBUG: Registered seat module xremote
[+0.00s] DEBUG: Registered seat module unity
[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.00s] DEBUG: _g_io_module_get_default: Found default implementation local (GLocalVfs) for ‘gio-vfs’
[+0.00s] DEBUG: Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)
[+0.01s] DEBUG: Monitoring logind for seats
[+0.01s] DEBUG: New seat added from logind: seat0
[+0.01s] DEBUG: Seat seat0: Loading properties from config section Seat:*
[+0.01s] DEBUG: Seat seat0 has property CanMultiSession=no
[+0.01s] DEBUG: Seat seat0: Starting
[+0.02s] DEBUG: Using VT 1
[+0.02s] DEBUG: Unity System Compositor: Logging to /var/log/lightdm/unity-system-compositor.log
[+0.02s] DEBUG: Launching process 2448: /usr/share/ubuntu-touch-session/lsc-wrapper --file '/run/mir_socket' --from-dm-fd 11 --to-dm-fd 14 --vt 1
[+0.02s] DEBUG: Unity System Compositor: Waiting for system compositor for 60s
[+0.02s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+0.02s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0
[+0.03s] DEBUG: Loading users from org.freedesktop.Accounts
[+0.03s] DEBUG: User /org/freedesktop/Accounts/User32011 added
[+4.12s] DEBUG: Unity System Compositor: Compositor closed communication channel
[+4.12s] WARNING: ../../../glib/gmain.c:5802: waitid(pid:2448, pidfd=15) failed: Invalid argument (22). See documentation of g_child_watch_source_new() for possible causes.
....
[+4.12s] DEBUG: Unity System Compositor: Unity system compositor stopped
[+4.12s] DEBUG: Releasing VT 1
[+4.12s] DEBUG: Seat seat0: Compositor stopped
[+4.12s] DEBUG: Seat seat0: Stopping
[+4.12s] DEBUG: Seat seat0: Stopped
[+4.12s] DEBUG: Required seat has stopped
[+4.12s] DEBUG: Stopping display manager
[+4.12s] DEBUG: Display manager stopped
[+4.12s] DEBUG: Stopping daemon
[+4.14s] DEBUG: Exiting with return value 1

Thank for answer

I am trying to port to samsung tab a7 lite using the standalone kernel method detailed in the guide. I have followed every step correctly to my knowledge, however I'm getting the problem is overlay and vendor use android 14 base but my kernel use android 12 (im trying to downgrade but theare are no method to downgrade on my tablet)

and i see mount log in dmesg in host:
[96434.125324] EXT4-fs (loop0): mounted filesystem 00017acc-df4f-433e-ae41-da447717a3f6 r/w with ordered data mode. Quota mode: none.
[96444.601967] EXT4-fs (loop0): unmounting filesystem 00017acc-df4f-433e-ae41-da447717a3f6.
after that , it switch to Usb Mass Storage

and my deviceinfo:
ydeviceinfo_name="Samsung Galaxy Tab A7 Lite"
deviceinfo_manufacturer="Samsung"
deviceinfo_codename="gta7litewifi"
deviceinfo_arch="aarch64"
deviceinfo_halium_version="12"
deviceinfo_kernel_source="https://github.com/gta7lite/android_kernel_samsung_ot8.git"
deviceinfo_kernel_source_branch="halium-12"
deviceinfo_kernel_defconfig="gta7litewifi_defconfig halium.config"
deviceinfo_kernel_clang_compile="true"
deviceinfo_kernel_llvm_compile="true"
deviceinfo_kernel_image_name="Image.gz"
deviceinfo_kernel_cmdline="bootopt=64S3,32N2,64N2 systempart=/dev/mapper/system console=tty0 androidboot.selinux=permissive"
deviceinfo_bootimg_header_version="2"
deviceinfo_bootimg_partition_size="33554432"
deviceinfo_bootimg_os_version="12"
deviceinfo_bootimg_os_patch_level="2021-09"
deviceinfo_ramdisk_compression="lz4"
deviceinfo_flash_pagesize="2048"
deviceinfo_flash_offset_base="0x00000000"
deviceinfo_flash_offset_kernel="0x40080000"
deviceinfo_flash_offset_ramdisk="0x51b00000"
deviceinfo_flash_offset_second="0x00f00000"
deviceinfo_flash_offset_tags="0x47880000"
deviceinfo_flash_offset_dtb="0x47c80000"
deviceinfo_dtb="gta7litewifi_dtb"
deviceinfo_rootfs_image_sector_size="4096"

thank you to any suggest
(Sorry for bad english)

@faveoled it disconnecting by me (because the charging cable is about to broken)