Samsung Galaxy Tab2 espressowifi (two models 7 & 10)

[piero]

Yes, they probably did their annual commit session

A generic guide on porting /e/ OS to any device

This is a bit technical, and probably only for passionate software developers! We took some time to write a first version of a generic guide to porting /e/ OS to potentially any smartphone. It gives an overview of the Android stack, how to build from sources, and some guidelines to bring an unsupported device to an /e/ life. This document is not fully complete, it lacks some “real examples” for instance, so it will be a work in progress. Therefore we are posting the source document to our /e…

[piero]

3 months later,
espresso3g : 167 downloads
espressowifi : 203 downloads

12 months later,
espresso3g : 1095 downloads
espressowifi : 1326 downloads

[breversa]

FWIW, here’s a logcat I managed to capture right now.
The adb session died on its own at the end of the log.

~$ adb logcat- waiting for device ---------- beginning of main06-22 13:59: -...

[petefoth]

@piero

if someone want to build, updates, debugs, or improvements for this devices
sea this post for Sources

[final edit Fri 7 Jan 20:41:42 GMT 2022 ] Build abandoned. Out of date stuff removed. See next post

[petefoth]

I have spent quite a lot of time this week trying and failing to make some up-to-date builds for this device. I had thought about leaving my device on @Android-Andi’s latest unofficial 0.9-nougat build, which works pretty well, but the temptation to try and make something a bit more up-to-date was too great, and the weather here has been too bad to be doing much outside, so…

First I tried a CM-14.1 build of Lineageos4microg, using Docker, but I could not get it to build.

Then I tried a v0.19-nougat build of /e/OS, building the traditional way with (lunch, mka bacon, etc). I eventually managed to get it to build, by removing some of the built-in apps, but the build will not run: it black screens, after showing the splash screen.

I have decided that life is too short to spend more time getting /e/OS to run on a device that is just a bit too old, small and feeble to really do it justice.

My device is now running with a ‘D-I-Y’ lineage4microg, plus sync to /e/'s cloud services, created as follows

• @Android-Andi’s LineageOS 14.1 ROM from here

• using the Nanodroid stable zip files from here

  • patched to allow signature spoofing using NanoDroid-patcher-23.1.2.20210117.zip

  • F-droid, Privileged Extension, Aurora Store and Aurora Services installed using NanoDroid-fdroid-23.1.2.20210117.zip then updated via F-Droid

  • MicroG installed using NanoDroid-microG-23.1.2.20210117.zip , updated by adding and enabling the MicroG repo in F-Droid

• Apps installed from F-Droid - DAVx5, Fennec, NextCloud, NextCloud Notes, K-9 Mail, Open Launcher

All of that gives me something aproaching /e/ OS, but with a sensible launcher, MicroG EN Framework working by default, up-to-date email and notes apps, and mature, trusted app stores. It’s not perfect, and it’s a bit laggy, but it will do for casual use.

I ‘installed’ some other Apps by copying from my daily driver (Xperia XZ1 Compact, running e-0.20 Custom build) using Android Backup and Restore Tools - WhatsApp, Facebook Messenger, and a couple of other apps that ‘just work’ without my having to enter account details again

So that’s it for me building trying to build for this device: it’s been fun and frustrating in about equal measures, but I’ve learned quite a bit in the process. Now to get ready for testing v0.21 releases

[Android-Andi]

Might be the combination of repos you’ve used.
On my personal builds I’ve used some combination of lineageos sources and sources from unlegacy-android. Those UA parts depend on some other changes in the frameworks part of android, kernel and hardware repo and blobs.
https://gerrit.unlegacy-android.org/q/topic:“omap-ddk-1.14”+(status:open%20OR%20status:merged)

[petefoth]

Thanks. It looks like building /e/OS and/or LOS4microg is solvable, and would be an interesting problem to solve, but I think I will focus my efforts on more recent, more powerful devices. My espressowifi device is now working well enough for me, with the setup described above

[piero]

[UNOFFICIAL-BUILD] for Samsung Galaxy Tab 2 (espresso3g-espressowifi)

Here is a fix for the laggy bug on WiFi Models : https://forum.xda-developers.com/t/rom-unofficial-7-1-2-e-os-by-android-andi-shared.4274001/ VIDEO TUTORIAL BY PUCK DARLINGTON (Channel 48) : Spoiler Video : Reggae Song homage to /e/OS and Android-Andi, tutorial and speed fix https://youtu.be/jnORUobv-rI NOTE : There is a problem of the ROM being slow. This issue has been solved in this video above so, do watch it ! SPECIAL THANKS TO : @Android-Andi for making this tablet live for such …

[piero]

@piero

3 months later,
espresso3g : 167 downloads
espressowifi : 203 downloads

12 months later,
espresso3g : 1095 downloads
espressowifi : 1326 downloads

2 years later :
espresso3g : 2550 downloads
espressowifi : 2860 downloads

[piero]

@piero

For me the device was buggy with the e-0.9-n-test version, slow with lineageOS 14.1, and only really works using CM13 Android-Andi’s based.

I don’t own the device for the time being, I have just sold my P3110, but with a linux OS installed on it. (i will probably buy a P5100)

The new main active xda supporters/contributors/developpers/maitainers of this device recently did a mainline linux kernel to be used with “postmarketOS” based on “Alpine-Linux”.
Thanks to @aat596 and @Migthy

documentation : https://wiki.postmarketos.org/wiki/Main_Page

I could not find a way to deal with community pre-build .IMG (heimdall failed at 2%) but i have success building from sources with the help of the pmbootstrap tool (you don’t need a big machine as for android building)

You can find more discussions here on this forum about postmarketOS
https://community.e.foundation/search?q=PostmarketOS

Here are my builds for our lovely “espresso”

https://murena.io/s/c884DPG43SWrs5g

[piero]

How to use both /e/OS and Linux PostMarketOS Community pre-built image on Galaxy Tab 2

install instructions for Phosh and XFCE4 images

works running from a SD card

as explained in Installation - Flashing - From SD Card Our device can boot a SD card, USB stick or other external storage.

.

preparation in a way to easily switch between /e/OS and PostmarketOS

from your actual Android_OS install file (AP_Stock_Samsung_Firmware.tar.md5 or Custom_Android_Based_OS_like-e-is.zip), extract the boot.img and copy it to your TWRP folder in internal storage (/sdcard/TWRP)

Download the pmOS pre-built image

from the download page

insert a MicroSDcard into your Computer

and find its name by running

$ lsblk

make sure it is the right one as you will overwrite everything on it. Use a path without partition number at the end,

such as /dev/mmcblk0, or /dev/sdd

decompress the downloaded file and write it to your MicroSDcard :

$ xz --decompress --stdout /path-to-pmos-samsung-espresso10.img.xz | sudo dd of=/dev/name-of-your-SDcard bs=4M status=progress

Wait until the command completes and eject the SD card.

If you are on Windows, see here.

insert the MicroSDcard into your device, and boot it into TWRP

using the mount feature, unselect all /partitions except “MicroSDcard”,

using the install feature, switch to “install image” rather than “install ZIP”

navigate to the “/external_sd/boot.img”, and flash it to the /boot partition

reboot system

The rootfs image will boot right into postmarketOS. You are done with installing postmarketOS, congratulations!

default login is user and password is 147147

to restore your /e/Android_OS

boot the device into TWRP mode,

and simply using the install feature, switch to “install image” rather than “install ZIP”

navigate to the previously stored “/sdcard/TWRP/boot.img”, and flash it to the /boot partition

to restore your PostmarketOS

boot the device into TWRP mode,

and simply using the install feature, switch to “install image” rather than “install ZIP”

navigate to the “/external_sd/boot.img”, and flash it to the /boot partition

.

.
Linux PostMarketOS on samsung Tab2 7.0" all variants (espresso7)
.
Linux PostMarketOS on samsung Tab2 10.1" all variants (espresso10)

.

the “dual-boot” should work also for others devices in the community list :
.
https://wiki.postmarketos.org/wiki/Devices