Ubuntu Touch on Google Nexus 4
Please note that development is currently (January 2014) still in alpha state. Do not expect this to be a fully working operating system.
- 1 References
- 2 State overview
- 3 Installing Ubuntu Touch
- 4 Using Ubuntu touch
- 5 Checking installed version
- 6 Updating Ubuntu Touch
- Main source: https://wiki.ubuntu.com/Touch/DualBootInstallation
- General information: https://wiki.ubuntu.com/Touch/ReleaseNotes
- Camera (only still photography)
- Music app
- Update Manager (allows to update apps)
Showstoppers for using Ubuntu Touch on Nexus 4 as primary OS
- Bluetooth does not work
- Enter key does not work in Terminal App
- openssh-server is installed but does not start. See resolution: http://howto.cactus.de/index.php/Ubuntu_Touch_on_Google_Nexus_4#getting_sshd_to_work
- Various apps (e.g. CuteSpotify) stop working when screen blanks
- Missing working mail client (imap/smtp), could not install thunderbird
- missing flight mode
- Calendar app has only very basic funtionality (and awkward layout)
Not tested yet
- How to import contacts, events (calendar)
- How to sync contacts, events (calendar)
- Backup/restore data
Installing Ubuntu Touch
- Install tools on Ubuntu Desktop:
sudo add-apt-repository ppa:phablet-team/tools sudo apt-get update sudo apt-get install phablet-tools android-tools-adb android-tools-fastboot
- Backup Nexus 4 (just to be safe): see backup android phone to Ubuntu
- Note Nexus 4 Android Build Number: JWR66V (4.3)
- Nexus 4 Device unlock (see http://nexus4root.com/nexus-4-root/how-to-root-nexus-4-windowsmac-osxlinuxubuntu/)
- Prepare Nexus 4
- Enable USB debugging
Starting installation on Ubuntu Desktop
tim@itsecorg:~$ adb kill-server tim@itsecorg:~$ sudo adb start-server * daemon not running. starting it now on port 5037 * * daemon started successfully * tim@itsecorg:~$ adb devices List of devices attached 00000000xxxxx device tim@itsecorg:~$ wget http://humpolec.ubuntu.com/latest/dualboot.sh tim@itsecorg:~$ chmod 755 dualboot.sh tim@itsecorg:~$ ./dualboot.sh FULL Connect device to install Ubuntu installer to. Detected connected Nexus 4 FULL install Downloading SU package % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 5861 100 5861 0 0 10104 0 --:--:-- --:--:-- --:--:-- 10105 Rebooting to bootloader (snip) finished. total time: 0.822s Waiting for sideload to boot sending: 'sideload' 100% Wait for installation of package to complete tim@itsecorg:~$
Continue installation process on phone
- On the device, press the apps button in Android to bring up the list of apps
- Browse the apps to find the Ubuntu Installer icon and press it to start the app
- When the app launches, press on Choose channel to install and choose a channel to download from (the recommended channel is Trusty)
- Error message: ubuntu-boot.img is not a correct image
- Once download is completed you need to Grant SU permissions to the application for the install to be successful. Press the Grant button, when prompted.
- Error can not access /cache/system - no such file or directory (2); Missing update command
- Press the Reboot to Ubuntu button to boot to Ubuntu. A standard phone reboot with the hard key will always boot to Android.
This first worked on 2014-01-17 with Ubuntu Touch 14.04.
root@ubuntu-phablet:/# uname -a Linux ubuntu-phablet 3.4.0-3-mako #21-Ubuntu SMP PREEMPT Tue Oct 8 13:11:48 UTC 2013 armv7l armv7l armv7l GNU/Linux root@ubuntu-phablet:/# cat /etc/ubuntu-build 132 root@ubuntu-phablet:/#
Using Ubuntu touch
Connecting to the device at shell level
- connect device to ubuntu desktop via usb
- check connection status
tim@itsecorg:~$ adb devices List of devices attached 0x0x0x0x0x0x0x device tim@itsecorg:~$
- start shell
Checking installed version
root@ubuntu-phablet:~# system-image-cli --info current build number: 132 device name: mako channel: devel alias: trusty last update: 2014-01-17 16:53:27 version version: 132 version ubuntu: 20140116.1 version device: 20140115.1 root@ubuntu-phablet:~#
Copying files to device
Basic version (works out of the box)
adb push localfile path-on-device
As soon as you get ssh working on the device:
scp localfile touch:path-on-device
Remount root fs rw (for update to /etc/shadow):
mount -o remount,rw /
Run passwd command
Problem with this: dualboot app in touch does not work any more since the password seems to be hard-coded.
Getting sshd to work
mkdir /var/run/sshd chmod 755 /var/run/sshd service ssh start cd /home/phablet mkdir .ssh chmod 700 .ssh
Add your pub key to authorized keys:
chmod 400 .ssh/authorized_keys chown -R phablet:phablet .ssh
ssh as phablet now works:
macantha:.ssh tim$ ssh phablet@touch Welcome to Ubuntu Trusty Tahr (development branch) (GNU/Linux 3.4.0-3-mako armv7l) * Documentation: https://help.ubuntu.com/ Last login: Sun Jan 19 11:29:41 2014 from macantha.fritz.box phablet@ubuntu-phablet:~$
Problem - this does not seem to be boot-resistant. The directory /var/run/sshd vanishes. So the following commands need to be added to the boot process:
Remount root fs rw:
mount -o remount,rw /
Add the following lines to /etc/rc.local (before exit cmd)
mkdir /var/run/sshd chmod 755 /var/run/sshd service ssh start
How to become root / use sudo?
- as phablet user simply use "sudo su -"
- Whenever you're asked for a password, it's phablet.
Various useful commands on Ubuntu touch
dpkg -l - lists all installed packages click list - lists installed click packages pkcon install xxx - installs click package pkcon search name xxx - searches for package containing xxx
root@ubuntu-phablet:~# pkcon install thunderbird Installing [=========================] Waiting in queue [=========================] Starting [=========================] Loading cache [=========================] Querying [=========================] Running [=========================] Loading cache [=========================] Installing packages [ ] (0%) The following packages have to be installed: libstartup-notification0-0.12-3ubuntu1.armhf library for program launch feedback (shared library) thunderbird-1:24.2.0+build1-0ubuntu1.armhf Email, RSS and newsgroup client with integrated spam filter Proceed with changes? [N/y] y [=========================] Installing [=========================] Waiting in queue [ == ] The daemon crashed mid-transaction! root@ubuntu-phablet:~#
Updating Ubuntu Touch
Because Dual Boot is a special set-up the standard update method for Ubuntu currently does not work (see Feature Roadmap).
To update Ubuntu to a newer version, On the android Ubuntu dual boot application, select "Uninstall Ubuntu" from the menu options. Next you will be asked if you want to keep the user data from Ubuntu. If you do not select "Delete user data", the next installation of Ubuntu will preserve your contacts, installed applications, pictures, background settings, ...
Once Ubuntu has been uninstalled, follow the same installation step to download a newer version of Ubuntu.