Hi Everyone I downloaded celadon codebase with manifest 2019ww13.xml. Using celadon-eng as my target and make kernelflinger build (*1). Then flashed to my device UPCore Plus (*2). Below table is the boot result of my UP Core Plus and compare board ---------------------------------------------------------------------------------------------- Image Version | Kernel Ver | Android Ver | UP Core Plus | RTC-1010 ---------------------------------------------------------------------------------------------- Celadon 2018ww32 | 4.14.59 | Android 8.1 | Boot to home | Boot to home Celadon 2018ww52 | 4.19.x | Android 9 | stuck on android logo | Boot to home Celadon 2019ww13 | 4.19.19 | Android 9 | stuck on android logo | Boot to home ---------------------------------------------------------------------------------------------- I have check the log, found something. 1. /data/media partition seems not mount on UP Core Plus -- UP Core Plus ------------------------------ console: # df -h Filesystem Size Used Avail Use% Mounted on /dev/root 3.3G 1.3G 2.0G 39% / tmpfs 895M 456K 895M 1% /dev tmpfs 895M 0 895M 0% /mnt /dev/block/dm-1 1.7G 726M 0.9G 42% /vendor /dev/block/mmcblk0p12 3.7M 32K 3.7M 1% /vendor/oem_config /dev/block/mmcblk0p13 5.6M 32K 5.6M 1% /vendor/factory /dev/block/mmcblk0p19 18G 80M 18G 1% /data -- RTC-1010 ------------------------------ console:/ # df -h Filesystem Size Used Avail Use% Mounted on /dev/root 3.3G 1.3G 2.0G 39% / tmpfs 1.8G 448K 1.8G 1% /dev tmpfs 1.8G 0 1.8G 0% /mnt /dev/block/dm-1 1.7G 726M 0.9G 42% /vendor /dev/block/mmcblk0p12 3.7M 32K 3.7M 1% /vendor/oem_config /dev/block/mmcblk0p13 5.6M 32K 5.6M 1% /vendor/factory /dev/block/mmcblk0p19 46G 141M 46G 1% /data /data/media 46G 141M 46G 1% /mnt/runtime/default/emulated 2. lots of log about write xxx to /dev/cpuset/camera-daemon/tasks: No such file or directory write xxx to /dev/cpuset/foreground/tasks: No such file or directory 3. zygote does not start successfully, always killed with unknown reason. 4. Below log frequenlty shows and never stop on both UP Core Plus and RTC-1010 logs. init: cannot setexeccon('u:r:hdcpd:s0') for hdcpd: Invalid argumen Should this happened ? I can't find any sepolicy te or file_contexts related to "hdcpd" Attached logs: (dmesg, df, logcat of "EXT|fsck|vold" ) https://pastebin.com/8mjtnLx4 -- 2019ww13_up_core_plus_stuck_on_android_logo https://pastebin.com/yeDTDkr9 -- 2019ww13_rtc1010_boot_to_home If need more information, please let me know. ------------------------- **1: build cmd $ . build/env.sh $ lunch celadon-eng $ make -j32 flashfiles **2: flash steps 1. extract celadon-flashfiles-eng.hpo14.zip to usb flash drive 2. boot to EFI shell 3. run startup.nsh to flash **3 Device Hardward information UP Core Plus - Apollo Lake - Atom x5-E3930 / Sandisk 32G eMMC (SDINBDA4-32G) / 2G RAM - BIOS Ver of UPCore Plus: UPCPSM10 - link: https://up-shop.org/945-thickbox_default/up-core-plus.jpg RTC-1010 - Apollo Lake - Pentium N4200 / Sandisk 64G eMMC (SDINBDA4-64G) / 4G RAM - link: https://www.aaeon.com/en/p/10-inches-rugged-tablet-computers-rtc-1010 -- Sincerely hpo14 <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&... 不含病毒。www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&... <#m_-3579749653117593903_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>