Today I tried out the rootfs of 9-20-2016 has the display corruption.
So backing off to 7-28-2016 works fine as far as the display goes.

Now to do some testing on it I need to set the rootfs writable to be able to install more packages but I struggle to remember the utility to do it with.

To be continued....

In anticipation of helping in the porting of FP2 I did a fresh repo with standard Ubports instructions
Plus the a local manifest as shown here: instructuons

But more specifically a local default.xml manifest for N5

~/phablet/.repo/local_manifests/hammerhead.xml

<manifest>

<!-- Lge -->
  <project path="device/lge/hammerhead" name="android_device_lge_hammerhead"   remote="ubp" />
  <project path="kernel/lge/hammerhead" name="android_kernel_lge_hammerhead"   remote="ubp" />

  <!--  Comment this next line out if it is included somewhere else. -->
  <project path="device/qcom/common" name="android_device_qcom_common" remote="cm" />
 <!--   -->

  <project path="vendor/lge"   name="proprietary_vendor_lge" remote="them" />

</manifest>

Then after make finishes successfully..... oops.
There will be an error about missing make rules for live wall paper.
Try running this script :

~/phablet/device/lge/hammerhead/setup-makefiles.sh

or edit directly file

~/phablet/vender/lge/hammerhead/hammerhead_vendor.mk

to:

# Copyright (C) 2014 The CyanogenMod Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# This file is generated by device/lge/hammerhead/setup-makefiles.sh

# Live wallpaper packages
PRODUCT_PACKAGES := \
#    LiveWallpapers \
#    LiveWallpapersPicker \
#    MagicSmokeWallpapers \
#    VisualizationWallpapers \
    librs_jni

# Publish that we support the live wallpaper feature.
#PRODUCT_COPY_FILES := \
#    packages/wallpapers/LivePicker/android.software.live_wallpaper.xml:/system/etc/permissions/android.software.live_wallpaper.xml

# Pick up overlay for features that depend on non-open-source files
DEVICE_PACKAGE_OVERLAYS := vendor/lge/hammerhead/overlay

# Apps
PRODUCT_PACKAGES += \
    qcrilmsgtunnel \
    shutdownlistener \
    TimeService \
    UpdateSetting

$(call inherit-product, vendor/lge/hammerhead/hammerhead-vendor-blobs.mk)

Then grab a rootfs

I hacked my version of rootstock-toouch-install to handle installing all to the phone.

As of now it fails to build.

I see there is already moto.shamu there. I'll try building that since I have a Nexus 6.

and the command
$phablet-dev-bootstrap phablet

that is a python script coded with:
....
repo = {
'aosp':
'https://code-review.phablet.ubuntu.com/p/aosp/platform/manifest.git',
}

repo_branch = 'phablet-4.4.2_r1'
valid_vendors = ('mako', 'flo', 'deb', 'manta', 'hammerhead', 'generic')
vendor_blobs = 'lp:~phablet-team/phablet-tools/aosp-vendor-4.4.2'
..

It pulls down a manifest.xml all most exactly like the one from
https://github.com/ubports/android -b 4.4.2

But of course it knows nothing about ubports.

So at this point I'm wondering what code is generating the systems we install from http://system-image.ubports.com ? Without some information from Marius, I think we would be recreating the wheel.

So I'm going to sleep on it : )

On removing double entries for strace in default.xml and doing below:

repo init -u https://github.com/ubports/android -b 4.4.2
repo sync -j10 -f

I'm getting all sorts of errors saying repo not found:
fatal: repository 'https://github.com/aosp/platform/external/safe-iop/' not found
fatal: repository 'https://github.com/aosp/platform/external/libppp/' not found
fatal: repository 'https://github.com/aosp/platform/prebuilts/gcc/linux-x86/host/i686-linux-glibc2.7-4.6/' not found
fatal: repository 'https://github.com/aosp/device/generic/common/' not found
fatal: repository 'https://github.com/aosp/platform/system/security/' not found
fatal: repository 'https://github.com/aosp/platform/hardware/qcom/camera/' not found
fatal: repository 'https://github.com/aosp/device/generic/armv7-a-neon/' not found
fatal: repository 'https://github.com/aosp/platform/external/e2fsprogs/' not found
fatal: repository 'https://github.com/aosp/platform/external/webrtc/' not found
fatal: repository 'https://github.com/aosp/platform/build/' not found

Did you get these too? Can you list exact steps on what you did?

I just went though major trouble putting rc-proposed on my Nexus 5.

From the build.prop file:
...
ro.build.id=KOT49H
ro.build.display.id=aosp_hammerhead-userdebug 4.4.2 KOT49H eng.mariogrip.20160308.153133 test-keys
ro.build.version.incremental=eng.mariogrip.20160308.153133
ro.build.version.sdk=19
ro.build.version.codename=REL
ro.build.version.release=4.4.2
ro.build.date=ti. 08. mars 15:31:40 +0100 2016
ro.build.date.utc=1457447500
ro.build.type=userdebug
ro.build.user=mariogrip
ro.build.host=mariogirp-laptop
...

Is that telling me that no change since march ?

repo init -u https://github.com/ubports/android -b 4.4.2

I'm not going to push it the the phone. It just pulls from Ubuntu/touch.

Above you said "Looks like all the rc builds are from branch 4.4.2 for Hammerhead." Are you basing that statement on what is found in /android/system/build.prop or somewhere else?

https://plus.google.com/107365438415018184209/posts/ZMdZEGi7sAf

I'll review posts from 7 months ago and maybe later today I'll see what happens with "phablet-dev-bootstrap phablet " on a fast internet connection.

Notice the fetch line in default.xml
...
<remote name="phablet"
fetch="../../../"
review="code-review.phablet.ubuntu.com" />
....

So:
Time out : ) @mariogrip When you get a chance, how to build stable for Nexus 5, please?

I should try below command:

repo init -u https://github.com/ubports/android -b 4.4.2

Will let you know how it goes.

By the way, did you have to do an extra install to get lunch? Or did I just overlook where in the instructions it got installed?

So if something is stale about these instructions it would be the "-b udp-5.1"

I must look more at the commit history of https://github.com/ubports/android

https://bugs.launchpad.net/ubuntu/+source/phablet-tools/+bug/1610650

@mariogrip - can you help us out here?

When I do a:
:~/phablet$ repo status

I get a large number of:
project abi/cpp/
missing (run "repo sync")

project bionic/
missing (run "repo sync")

project device/moto/shamu/
missing (run "repo sync")
...

So I'm running "repo sync -f"
To force repo to continue even after a failure then I'll look for a pattern in the failures. Looks like it will take all day.

It seems to me that when I do:

repo sync -j10

it does not complete successfully with a great many fetch errors,

And no build/envsetup.sh

I'm thinking these instructions have gone stale.

mkdir phablet && cd phablet/
repo init -u https://github.com/ubports/android -b ubp-5.1

repo sync -j10

. build/envsetup.sh

I will try it again, may be I may have missed something. Thank you.

ro.build.description=aosp_hammerhead-userdebug 4.4.2 KOT49H eng.mariogrip.20160308.153133 test-keys

Are you fallowing ubports build set up instructions or from Ubuntu?

And by the way, I have NOT set up to do builds myself.

From the description, option 2 looks like a generic ARM32 build. Will it have required BSP for hammerhead/Nexus 5?