Ubuntu: custom ubuntu live CD: NetworkManager not working



Question:

I'm trying to build up an ubuntu live cd from scratch but I'm failing with the automatic configuration for the network interface card. The live cd is booting into desktop but NetworkManager is stuck to be unconfigured. The configuration /etc/network/interfaces is untouched, therefore it should be configured by NetworkManager but it is not. When the desktop environment is loading, NetworkManager is disabled with no connection configured.

What's wrong with my configuration?


For reproducing - how I build my live cd:

you need:

apt install build-essential debootstrap squashfs-tools genisoimage syslinux-common syslinux-utils  

now copy base system from original iso:

mount -o loop kubuntu-16.10-desktop-amd64.iso /mnt/tmp/  mkdir -p /usr/local/src/custom-ubuntu/iso && cd /usr/local/src/custom-ubuntu/iso  cp -r /mnt/tmp/.disk/ .  cp -r /mnt/tmp/boot/ .  cp -r /mnt/tmp/isolinux/ .  cp -r /mnt/tmp/EFI/ .  mkdir casper  

create mini-ubuntu

debootstrap --arch amd64 yakkety /usr/local/src/custom-ubuntu/squashfs  

mount devices and chroot into squashfs

cd /usr/local/src/custom-ubuntu/  mount --bind /dev squashfs/dev  mount -t devpts devpts squashfs/dev/pts  mount -t proc proc squashfs/proc  mount -t sysfs sysfs squashfs/sys  cp /etc/resolv.conf squashfs/etc/  cp /etc/apt/sources.list squashfs/etc/  chroot squashfs  

install your favorite programs for your live cd. In my case this is

apt install bash-completion ssh vim gpm htop iotop cifs-utils ntp mc rar unrar unace arj p7zip-full apt-file lsb-release dmidecode hdparm realpath acpid aptitude unzip ncdu di localepurge console-data gnu-fdisk intel-microcode amd64-microcode sysstat bc unattended-upgrades btrfs-progs btrfs-tools hfsplus hfsprogs hfsutils exfat-fuse exfat-utils ntfs-3g gparted gpart gddrescue linux-image-generic linux-signed-generic linux-signed-image-generic linux-firmware  linux-base linux-tools-generic linux-wlan-ng linux-headers-generic grub-efi casper lupin-casper ubiquity-casper firefox okular libreoffice libreoffice-kde gtk2-engines-oxygen gtk3-engines-breeze k4dirstat meld partitionmanager gsmartcontrol   apt clean  

Install your favorite desktop environment.

leave chroot and copy the new kernel

cp squashfs/boot/initrd.img-4.8.0-27-generic iso/casper/initrd.lz  cp squashfs/boot/vmlinuz-4.8.0-27-generic iso/casper/vmlinuz.efi  

umount and clean up:

umount squashfs/dev/pts  umount squashfs/dev  umount squashfs/proc  umount squashfs/sys  rm squashfs/etc/resolv.conf  

Now you are finished and it is time to build the squash-filesystem and create the iso file:

mksquashfs squashfs iso/casper/filesystem.squashfs -noappend  genisoimage -cache-inodes -r -J -joliet-long -input-charset utf-8 -l -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -eltorito-alt-boot -e boot/grub/efi.img -no-emul-boot -o live.iso iso  isohybrid -u live.iso  

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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