Unsupported CPU Architecture (i686) in proot-distro

[ghost]

Now. I have Android 7.1 x86 installed with Termux on it. But the issue is that Ubuntu 20.04 isn't supported on i686.

It would be useful if you just use Ubuntu 18.04/16.04 LTS instead of Ubuntu 20.04 for Android x86

I am a Ubuntu User. proot-distro is easier to use. I use Ubuntu on my Phone using proot-distro more often.

[poVoq]

Funny coincidence, but just today I got the same error.

I am trying to install Ubuntu20.04 or Arch Linux on my x86 Zenfone2.

Can I somehow force a i386 image which should work also? I think AMD64 might not work on the Zenfone2 as it is a strange hybrid with 64bit Linux Kernel, but 32bit Android user space.

[ghost]

You need to setup chroot/proot environment with qemu-user. but it may cause segfault. and some programs may not work.. but x86 is fine

[michalbednarski]

You could add Ubuntu18 by going into /data/data/com.termux/files/usr/etc/proot-distro and creating new file (example for Ubuntu 18.04 (based on ubuntu.sh (for Ubuntu 20.04) from this repo), name new file for example ubuntu18.sh, name will be used in proot-distro commands, omit case and directly echo single URL if you want to force version):

##
## Plug-in for installing Ubuntu Focal (18.04).
##

DISTRO_NAME="Ubuntu 18.04"

# Returns download URL.
get_download_url() {
	case "$(uname -m)" in
		aarch64)
			echo "https://partner-images.canonical.com/core/bionic/current/ubuntu-bionic-core-cloudimg-arm64-root.tar.gz"
			;;
		armv7l|armv8l)
			echo "https://partner-images.canonical.com/core/bionic/current/ubuntu-bionic-core-cloudimg-armhf-root.tar.gz"
			;;
		i686)
			echo "https://partner-images.canonical.com/core/bionic/current/ubuntu-bionic-core-cloudimg-i386-root.tar.gz"
			;;
		x86_64)
			echo "https://partner-images.canonical.com/core/bionic/current/ubuntu-bionic-core-cloudimg-amd64-root.tar.gz"
			;;
	esac
}

# Define here additional steps which should be executed
# for configuration.
distro_setup() {
	# Hint: $PWD is the distribution rootfs directory.
	#echo "hello world" > ./etc/motd

	# Run command within proot'ed environment with
	# run_proot_cmd function.
	# Uncomment this to do system upgrade during installation.
	#run_proot_cmd apt update
	#run_proot_cmd apt upgrade -yq
	:
}

---

I think you cannot (without qemu) run x86_64 on 32-bit Android even with 64-bit Linux as Android would set seccomp policy which would prevent 64-bit programs from executing any syscall.

---

I guess it'd be question to @xeffyr if script I've pasted above should be bundled with proot-distro

[ghost]

Now proot-distro provides both Ubuntu 18.04 and 20.04. If you need to install v18.04, then do proot-distro install ubuntu-18.04. Version 20.04 has alias ubuntu (as previously) and ubuntu-20.04.