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How to install ubuntu on the Droid 4

OP greekchampion04

25th February 2012, 05:39 PM   |  #1  
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How to install ubuntu on the Droid 4

Note to mods: this thread is a branch off of this thread

Huge thanks to zacthespack for creating the ubuntu installer app and original boot script and to zeroktal for modifying the script to work on the D4 and helping me get it working on my device.

I decided to take my experience in setting this up and put it into a how-to so that others could enjoy the experience of having ubuntu on the Droid 4. If zackthespac or zeroktal have any problems with me making and putting this guide up, please let me know and I will remove it.

Knowledge Required:
  • working knowledge of command line
  • working knowledge of vi
  • OR the ability to learn how to use both

Tools Required:
Step by Step:
  1. Install BusyBox, Terminal, and Android VNC Viewer
  2. Install and run Ubunutu Installer App
  3. Follow the on-screen instructions and click next
  4. Download either the Small or Large image to your phone, (use zeroktal's ubuntud4.zip file instead of the boot script provided in the guide) after the image downloads (will take a while because the file is HUGE) click next
  5. For this screen, the instructions differ from the app.
    1. With your D4 plugged into your PC in USB Mass Storage, create a directory (folder) called ubuntu in the EXTERNAL sdcard's root*
    2. Extract the image you downloaded to that directory
    3. Download and extract the attached .sh (ununtud4.zip) to that directory
    4. Disconnect your phone from your PC
    5. Open terminal and run the following commands:
    su [ENTER]
    mount -o remount,rw,exec,suid /dev/block/vold/179:1 /mnt/sdcard-ext [ENTER]
    cd /mnt/sdcard-ext/ubuntu [ENTER]
    sh ubuntud4.sh [ENTER]
    960x540 [ENTER]**
    If you get an error message: ubuntud4.sh: 45: syntax error: end of file unexpected (expecting "then") see troubleshooting section below.
    killall -TERM Xtightvnc [ENTER]
    vncserver :1 -geometry 960x540 [ENTER]**
    6. Open androidVNC app and enter the following settings:
    Nickname: Anything you want
    Password: ubuntu
    Address: localhost
    Port: 5901
    Color Format: 24-bit color (4 bpp)
    7. Hit connect
    8. Hit your menu soft button and then set input mode to touchpad
    9. You have ubuntu on your Droid 4!

To "shut down" ubuntu:
  • press the menu button, select disconnect in VNC
  • In terminal type this command 3 times (terminal will close itself when you are done):
    exit [ENTER]

To "start up" ubuntu again:
  • Follow steps 5-8 above

Troubleshooting:
If you get the error message: ubuntud4.sh: 45: syntax error: end of file unexpected (expecting "then") you are about to have fun with vi at the command line.

Do the following from inside terminal:
su [ENTER]
cd /mnt/sdcard-ext/ubuntu [ENTER]
vi ubuntud4.sh [ENTER]
If you see ^M or ^ at the end of any line (remember to scroll all the way to the right to see the end of long lines) remove it. once you do that, everything should work just fine. (See the Vi Cheat Sheet above for help with Vi)

Note: Vol Up + E is [ESC] by default in this terminal emulator

Notes:
* It does not have to be on the external SD, but if you put it on the internal SD you will have to modify things as needed-- if you dont know what needs to be changed, just put it on the external SD.
** Screen size can be whatever you want it to be, but 960x540 is the size of the D4 screen.
*** This is a fairly involved process... especially when it comes to editing the .sh file in vi things can get very frustrating and hard, but just take your time and you will get it. As always, doing anything with root access on your phone, especially on the command line has risks. I am not responsible if anything goes wrong with your phone... proceed at your own risk!
Attached Files
File Type: zip ubuntud4.zip - [Click for QR Code] (833 Bytes, 464 views)
Last edited by greekchampion04; 25th February 2012 at 05:50 PM.
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25th February 2012, 07:05 PM   |  #2  
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Quote:
Originally Posted by greekchampion04

Notes:
* It does not have to be on the external SD, but if you put it on the internal SD you will have to modify things as needed-- if you dont know what needs to be changed, just put it on the external SD.
** Screen size can be whatever you want it to be, but 960x540 is the size of the D4 screen.
*** This is a fairly involved process... especially when it comes to editing the .sh file in vi things can get very frustrating and hard, but just take your time and you will get it. As always, doing anything with root access on your phone, especially on the command line has risks. I am not responsible if anything goes wrong with your phone... proceed at your own risk!

I actually got it up and running on my internal sdcard partition. Pretty much just have to modify the Mount remount command, and a few lines in the script.
Here's the original command
Code:
mount -o remount,rw,exec,suid /dev/block/vold/179:1 /mnt/sdcard-ext
And the modified one
Code:
mount -o remount,rw,exec,suid /dev/block/vold/179:57 /mnt/sdcard
Only things you have to change are the device location(179:57) and mount location(drop the -ext after sdcard)
Now, after that you also have to modify the script a bit. Just go through it, and anywhere that you see sdcard-ext, drop the -ext off the end.
Last edited by mccompunerd; 25th February 2012 at 07:10 PM.
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25th February 2012, 07:20 PM   |  #3  
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thanks for putting that up for everybody! like i said, if you know what you are doing its not a hard swap to make.
27th February 2012, 08:57 PM   |  #4  
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Is anyone else getting just a gray screen when they remote in? What could be causing this?
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28th February 2012, 02:57 AM   |  #5  
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i had that same problem at first... did you use zeroktal's ubuntud4.zip file? or did you use the ubuntu.sh file included in the app?
28th February 2012, 06:57 AM   |  #6  
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I used the sh file included. I did however fix the problem, when mounting at the start i confused vold with void. I did not get the file system mounted properly. This method does work!! however I am currently trying to get bash on my droid to replace sh as the shell. I've checked the forums but have not found anything yet about someone installing bash on the droid 4. With no way for nandroids I feel i should wait before I kill sh.

Sent from my DROID4 using XDA App
1st March 2012, 08:50 AM   |  #7  
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If you mod your init.sh in your root directory to the following, your vnc will work on startup without issue. It will also shutdown vnc on exit.



#!/bin/bash
#############################################
# Asks User to screen size and saves as REZ #
#############################################
#echo "Now enter the screen size you want in pixels (e.g. 800x480), followed by [ENTER]:"

#read REZ

##############################################
# Pick which desktop environment to use, this#
# is done by having a xstartup file for each #
# desktop, then renaming the one you want to #
# use to 'xstartup' before boot #
##############################################
echo "Please select which Desktop environment you want to use, type the number to select it then press [ENTER]"
echo "1 - LXDE"
echo "2 - Gnome"
echo "Make your Selection:"
read DESKTOP
if [ $DESKTOP == 1 ]
then
mv /root/.vnc/lxstartup /root/.vnc/xstartup
fi
if [ $DESKTOP == 2 ]
then
mv /root/.vnc/gxstartup /root/.vnc/xstartup
fi

###########################################
# Tidy up previous LXDE and DBUS sessions #
###########################################
rm /tmp/.X* > /dev/null 2>&1
rm /tmp/.X11-unix/X* > /dev/null 2>&1
rm /root/.vnc/localhost* > /dev/null 2>&1
rm /var/run/dbus/pid > /dev/null 2>&1

################################################## ##########
# enable workaround for upstart dependent installs #
# in chroot'd environment. this allows certain packages #
# that use upstart start/stop to not fail on install. #
# this means they will have to be launched manually though #
################################################## ##########
dpkg-divert --local --rename --add /sbin/initctl > /dev/null 2>&1
ln -s /bin/true /sbin/initctl > /dev/null 2>&1


###############################################
# start vnc server with given resolution and #
# DBUS server, (and optionally an SSH server) #
###############################################
dbus-daemon --system --fork > /dev/null 2>&1
/etc/init.d/ssh start
vncserver :1 -geometry 960x540
echo
echo "If you see the message 'New 'X' Desktop is localhost:1' then you are ready to VNC into your ubuntu OS.."
echo
echo "If VNC'ing from a different machine on the same network as the android device use the 1st address below:"
##########################################
# Output IP address of android device #
##########################################
ifconfig | grep "inet addr"

echo
echo "If using androidVNC, change the 'Color Format' setting to 24-bit colour, and once you've VNC'd in, change the 'input mode' to touchpad (in settings)"

echo
echo "To shut down the VNC server and exit the ubuntu environment, just enter 'exit' at this terminal - and WAIT for all shutdown routines to finish!"
echo

################################################## #############
# Spawn and interactive shell - this effectively halts script #
# execution until the spawning shell is exited (i.e. you want #
# to shut down vncserver and exit the ubuntu environment) #
################################################## #############
/bin/bash -i

#########################################
# Disable upstart workaround and #
# kill VNC server (and optionally SSH) #
# Rename used xstartup to its first file#
#########################################
killall -TERM Xtightvnc
/etc/init.d/ssh stop
1st March 2012, 08:54 AM   |  #8  
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Also save the follow lines between ### as remount.sh on your system partition. Then chmod 755 /system/remount.sh. Now you can just run run from a terminal /system/remount.sh and voila it remounts correctly and starts ubuntu(with the above fixes). Im still working on the unmounts.

####### for the internal sd card
mount -o remount,rw,exec,suid /dev/block/vold/179:57 /mnt/sdcard
/mnt/sdcard/ubuntu/ubuntu.sh
######

OR

####### for the external sd card
mount -o remount,rw,exec,suid /dev/block/vold/179:1 /mnt/sdcard-ext
/mnt/sdcard-ext/ubuntu/ubuntu.sh
#######
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2nd March 2012, 04:43 PM   |  #9  
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great stuff!
2nd March 2012, 05:37 PM   |  #10  
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feel free :)
Feel free and take, modify, repost or edit anything I touch.

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