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== Maintainer(s) ==
== Maintainer(s) ==
== Requirements ==
The device needs to have the bootloader unlocked (OEM unlock state).





Revision as of 19:34, 25 January 2022

Samsung Galaxy Tab Pro 12.2 (WiFi) (2014)
v1awifi with the xfce GUI
v1awifi with the xfce GUI
Manufacturer Samsung
Name Galaxy Tab Pro 12.2 (WiFi) (2014)
Codename samsung-v1awifi
Released 2014
Hardware
Chipset Samsung Exynos 5420
CPU 4x1.9 GHz Cortex-A15 and 4x1.3 GHz Cortex-A7
GPU Mali-T628 MP6
Display 2560x1600
Storage 32/64 GB
Memory 3 GB
Architecture armv7
Software
Original software Android 5.1.1
postmarketOS
Category testing
Pre-built images no
Mainline no
postmarketOS kernel 3.4.113
Features
Flashing
Broken
USB Networking
Partial
Internal storage
No data
SD card
No data
Battery
Works
Screen
Works
Touchscreen
Partial
Multimedia
3D Acceleration
No data
Audio
No data
Camera
Broken
Camera Flash
No data
Connectivity
WiFi
Works
Bluetooth
No data
GPS
No data
NFC
No data
Modem
Calls
No data
SMS
No data
Mobile data
No data
Miscellaneous
FDE
No data
USB OTG
No data
HDMI/DP
No data
Sensors
Accelerometer
No data
Magnetometer
No data
Ambient Light
No data
Proximity
No data
Hall Effect
No data
Haptics
No data
Barometer
No data


Contributors

  • Grimler
  • AAT596

Maintainer(s)

Requirements

The device needs to have the bootloader unlocked (OEM unlock state).


Users owning this device


What does not work

  • KDE Plasma (boots into black screen)
  • Any DE that uses Wayland
  • Stylus
  • Touchscreen stops working after some minutes of uptime and after reboot

How to enter flash mode

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

Installation

Create TWRP flashable zip:

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

Run adb push /tmp/postmarketOS-export/pmos-samsung-v1awifi.zip to copy zip to the device, reboot to twrp and install the zip and then reboot to system.

Some detailed observations

Booting XFCE UI:

  • Booting is extremely slow. It stays in the Samsung splash screen for a minute and a half and then starts booting pmOS. However, if I connect the charger when the tablet is powered off, it displays the charging icon as usual, and then starts booting pmOS immediately.
  • Sometimes the screen goes black for a split second and then it returns to normal.
  • Cannot boot into weston somehow. Seems that the interface does not work here. It seems common between other devices that share the same kernel (any DE that uses Wayland).
  • Create a file called /etc/X11/Xwrapper.config with the line `needs_root_rights=yes` to get X working.
  • The tablet freezes when the device is powered off or rebooted (from terminal and from XFCE UI).
  • After a couple of minutes (if using XFCE UI), the tablet is frozen entirely.
  • SSH does not work. If the command `sudo service sshd status` is executed on terminal, system tells me that SSH is currently loaded and functioning. However, it does not seem to work from USB (172.16.42.1) nor from WiFi. Nevertheless, telnet works.
  • I see slightly wrong colors on images.

Booting with MATE makes some differences:

  • The UI does not freeze after a couple of minutes.
  • Reboot/Shutdown works (only via UI).

See also