Samsung Galaxy Tab S 8.4 LTE (samsung-klimtlte)

Features
Flashing	Partial
USB Networking	Works
Internal storage
SD card
Battery
Screen	Works
Touchscreen	Works
Multimedia
3D Acceleration
Audio
Camera	Broken
Camera Flash
Connectivity
WiFi	Works
Bluetooth	Broken
GPS	Broken
NFC
Modem
Calls	Broken
SMS	Broken
Mobile data	Broken
Miscellaneous
FDE
USB OTG
HDMI/DP
Sensors
Accelerometer
Magnetometer
Ambient Light
Proximity
Hall Effect
Haptics
Barometer

Samsung Galaxy Tab S 8.4" LTE
	; Klimtlte with the xfce GUI
Manufacturer	Samsung
Name	Galaxy Tab S 8.4" LTE
Codename	samsung-klimtlte
Released	2014
Type	tablet
Hardware
Chipset	Samsung Exynos 5420
CPU	1.9 Ghz A15 Quad + 1.3 Ghz A7 Quad
GPU	Mali-T628 MP6
Display	2560x1600 AMOLED
Storage	16/32 GB
Memory	3 GB
Architecture	armv7
Software
Original software	Android
Original version	4.4.2
postmarketOS
Category	testing
Pre-built images	no
Mainline	partial

Contributors

grimler

Users owning this device

Grimler (Notes: Also have a klimttd board)
Smankusors

How to enter flash mode

Press and hold Power + Volume Down + Home. Press Volume Up when prompted.

Installation

WARNING: It is not possible to power off the device from downstream kernel in PostmarketOS. Device fails to poweroff and CPU becomes very hot, causing battery to drain fast. If you install downstream kernel you have to reboot to recovery and shut it off from there.

Note: the port works on the klimttd variant of the tablet, i.e. the version released in China with model number T705C, as well. The differences between the models are that T705 has an Intel XMM6360 modem and a Broadcom BCM47531 gps chip, while T705C uses some Qualcomm chip for modem + gps. As neither modem nor gps works in the port you can install the port on klimttd without any consequences.

To install postmarketOS to an sdcard, insert the sdcard to your computer, check the /dev mountpoint with for example fdisk, and run

$ pmbootstrap install --sdcard /dev/sdX

where sdX should be replaced by the mountpoint. After that flash the kernel with

$ pmbootstrap flasher flash_kernel

and the tablet should automatically reboot into postmarketOS.

To install postmarketOS to the internal storage the easiest way is to create a zip to flash from twrp, run

$ pmbootstrap install --android-recovery-zip
$ pmbootstrap export

And then copy or adb push /tmp/postmarketOS-export/pmos-samsung-chagallwifi.zip to your device, reboot to twrp and install the zip and then reboot to system.

Alternatively you can flash the kernel with heimdall from download mode and then install the rootfs with netcat by running:

$ pmbootstrap install
$ pmbootstrap initfs hook_add debug-shell
$ pmbootstrap export --odin
$ heimdall flash --BOOT /tmp/postmarketOS-export/boot.img-samsung-chagallwifi

You can now telnet to the device and netcat the postmarketOS installation:

$ telnet 172.16.42.1
$ nc -v -l -p 60000 > /dev/mmcblk0p18

Open another console

$ pv /tmp/postmarketOS-export/samsung-chagallwifi.img | nc 172.16.42.1 60000

Wifi on downstream kernel

WARNING: Wifi is currently broken in downstream kernel. Something changed in userspace so that instructions below no longer works.

To connect to a wifi the same steps as for the Medion Lifetab S9714 (medion-kai) work:

1. Verify that the wlan0 interface exists

$ ip link

2. Turn on wifi

$ nmcli radio wifi on

3. List available wifis

$ nmcli device wifi list

4. Connect to your wifi

$ nmcli device wifi connect "$SSID" password "$PASSWORD"

5. Verify that you have been given an ip address on the wlan0, or swlan0, interface

$ ip a

Mainline kernel status

A work in progress mainline kernel (linux-postmarketos-exynos5) is available (can be chosen in pmbootstrap init step). You can install postmarketOS to either the internal or external storage and ssh into the tablet over USB. Display, wifi and everything else are not working.