Manage different GCC versions. http://manpages.ubuntu.com/manpages/trusty/man8/update-alternatives.8.html $ update-alternatives --list gcc /opt/gcc-4.9/bin/gcc /usr/bin/gcc-5 /usr/bin/gcc-7 $ sudo apt-get install gcc-9 g++9 $ which gcc-9 /usr/bin/gcc-9 $ which gcc /usr/bin/gcc $ gcc --version gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0 Copyright (C) 2017 Free Software Foundation, Inc. $ sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 20 $ sudo...

Helios4 in suspend mode keeps waking up. Watchdog timer wakeup seems to be the issue. As it’s a recent install wake on lan suspend feature is enabled: https://wiki.kobol.io/helios4/wol/#suspend-system. Looks like this is the solution: https://github.com/openmediavault/openmediavault/issues/343.

Full instructions are here: https://source.android.com/setup/build/building Build OS Ubuntu 18.04.3 Virtual Box VM. Increased mem from 8G to 12G. Increased swap from 2G to 4G. 6 CPUs allocated to VM. Build takes up 155G disk space. (Completed build with 16G free) Packages (from http://wiki.t-firefly.com/en/Firefly-RK3399/compile_android8.1_firmware.html) sudo add-apt-repository ppa:openjdk-r/ppa sudo apt-get install openjdk-8-jdk...

I had setup Virtual Box VM that could boot the same Linux root partition that was used for dual booting Linux (see the last post ). However after a few kernel upgrades the manual process to create the boot image needs to be repeated. Forget to do that and the...

Attempt to setup Helios4 OS. Doing configuration on local machine to avoid the need to login via the serial interface. The original instructions are here: https://wiki.kobol.io/install/ Step 1. Download image As per helios4 instructions. The exact image used here is: https://cdn.kobol.io/files/Armbian_5.91_Helios4_Debian_stretch_default_4.14.135.7z Step 2. Extract to a local raw file system...