- Audio - you need to setup PulseAudio as systemwide. Not sure why it does not work as a normal user. You will also need the alsaucm files from libasound2-data_1.0.27.2-1ubuntu6_all.deb
1. Restart adbd as root using *adb root*; if your ROM doesn't support it, reboot to recovery.
1. Push the provided rom_info.txt file. You might want to edit it, it's a plaintext config file documented at https://github.com/Tasssadar/multirom/wiki/Add-support-for-new-ROM-type
1. Move your root image to /data/media/0/multirom/roms/ArchLinux*<romname\>*/root.img
1. Edit the init script (systemd-initramfs/init) to point to your new root.img location, then rebuild the initramfs (you don't need to build the boot image for MultiROM).
You basically have to follow the MultiROM image steps, but instead of placing the files into /data/media/0/multirom you will want to put them into a *multirom* directory inside of your fat32-formatted USB drive. You will however have to edit the init script, find the USB drive's device (it should be /dev/block/sda1 but don't count on that), mount it and pass the torch to systemd's init.
A normal Nexus 7 Flo boot will call */system/bin/conn_init*, which does a whole lot of verifying your MAC address and then writes out a config with the MAC address in it. Very annoying (especially if you want to spoof it). To get around this you need a copy of the Wi-Fi configs and manually enable the wifi driver since it's not loaded on boot.
1. Copy /system/vendor/firmware [android] to /usr/lib/firmware [arch] (you might want to mount system in the chroot or copy the files to /sdcard, then access them from /media/sdcard in the chroot).
1. Add your main user to said group, so you can access the control sockets. You will need to manually their path if you want to edit the Wi-Fi network configuration.
USB serial works. I had some problems connecting with the Android Composite Gadget, however just using the USB_G_SERIAL kernel config seems to work (it's enabled by default in the patched kernel).
ADB shell works, but you will need to set the size ($COLUMNS and $LINES) and terminal type ($TERM) manually.
To use RNDIS, plug the Nexus into a computer and bridge the virtual ethernet adapter with your local network. Then, bring up the link and get an address as usual. The interface name should be 'usb0'.
Just make sure you use the patched fork provided above instead of the default repository, or that you apply the patches below, otherwise you will likely have issues.
- CONFIG_FB_MSM_DEFAULT_DEPTH_BGRA8888 (with RGBA patch from robclark)
- CONFIG_DRM=y
- CONFIG_MSM_KGSL_DRM=y
*Required for Wi-Fi/network:*
- CONFIG_ANDROID_PARANOID_NETWORK=n
- CONFIG_MODULES=y
- CONFIG_PRIMA_WLAN=y
- CONFIG_WCNSS_CORE=y
*Required for USB serial:*
- CONFIG_USB_G_SERIAL=y
*Required to boot:*
- CONFIG_FHANDLE=y
- CONFIG_DEVTMPFS=y
- CONFIG_UTS_NS=y
- CONFIG_IPC_NS=y
- CONFIG_USER_NS=y
- CONFIG_PID_NS=y
- CONFIG_NET_NS=y
- CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
- CONFIG_FANOTIFY=y
- CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
- CONFIG_SECURITY_SELINUX_BOOTPARAM=y
*Debugging:*
- CONFIG_DETECT_HUNG_TASK=y
- CONFIG_DEBUG_SPINLOCK=y
- CONFIG_DEBUG_MUTEXES=y
- CONFIG_DEBUG_ATOMIC_SLEEP=y
- CONFIG_STACKTRACE=y
- CONFIG_DEBUG_BUGVERBOSE=y
- CONFIG_LOG_BUF_SHIFT=21
- CONFIG_PANIC_TIMEOUT=0
If you use the kernel at https://github.com/crondog/kernel_msm (mr1 branch), there is a default configuration named flo_defconfig which contains most of the needed options.
