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Samsung Galaxy Tab A 7.0 (2016) (samsung-gtexswifi)

From postmarketOS Wiki
Samsung Galaxy Tab A 7.0 (2016)
gtexswifi running xfce4
gtexswifi running xfce4
Manufacturer Samsung
Name Galaxy Tab A 7.0 (2016)
Codename samsung-gtexswifi
Released 2016
Type tablet
Hardware
Chipset Spreadtrum SC8830
CPU Quad-core 1.3 GHz Cortex-A7
GPU Mali-400 MP
Display 800x1280 IPS LCD
Storage 8GB eMMC 4.5
Memory 1.5GB RAM
Architecture armv7
Software
Original software Android (TouchWiz)
Original version 5.1.1
postmarketOS
Category testing
Pre-built images no
Mainline no
postmarketOS kernel 3.10.108
Unixbench Whet/Dhry score 964.9
Features
Flashing
Works
USB Networking
Works
Internal storage
No data
SD card
No data
Battery
Works
Screen
Works
Touchscreen
Works
Multimedia
3D Acceleration
No data
Audio
No data
Camera
No data
Camera Flash
No data
IR TX
No data
Connectivity
WiFi
Partial
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
Works
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
Note Note: This page is about Spreadtrum SC8830 variants of Samsung Galaxy Tab A 7.0 (2016) (samsung-gtexswifi).
Note This tablet requires a 512-byte header prepended to boot.img before it will even attempt to boot. This header is the letters "DHTB" followed by 508 NULL bytes. boot-deploy!67

Supported Models

SM-T280 and SM-T280Q

Contributors

  • Zocker1012
  • 19atlas

Users owning this device


How to enter flash mode

Press Power + Volume Up + Home Button

Installation

We recommend using twrp
After installing twrp, run:

$ pmbootstrap init
$ pmbootstrap install
$ pmbootstrap flasher flash_rootfs # flash SYSTEM
$ pmbootstrap flasher flash_kernel # flash boot.img


How to start ssh

ignore warnings

$ ip a # see device
$ sudo ip link set dev enp0s20u<CHANGEME> address 12:12:12:12:12:12
$ ssh user@172.16.42.1

Other

Unixbench results

Device WIP mainline kernel

Wifi

wifi service in lineageos wpa_supplicant.conf

# WiFi
BOARD_WPA_SUPPLICANT_DRIVER := NL80211
WPA_SUPPLICANT_VERSION      := VER_2_1_DEVEL
BOARD_WPA_SUPPLICANT_PRIVATE_LIB := lib_driver_cmd_sprdwl
BOARD_HOSTAPD_DRIVER        := NL80211
BOARD_HOSTAPD_PRIVATE_LIB   := lib_driver_cmd_sprdwl
BOARD_WLAN_DEVICE           := sc2341
WIFI_DRIVER_FW_PATH_PARAM   := "/data/misc/wifi/fwpath"
WIFI_DRIVER_FW_PATH_STA     := "sta_mode"
WIFI_DRIVER_FW_PATH_P2P     := "p2p_mode"
WIFI_DRIVER_FW_PATH_AP      := "ap_mode"
WIFI_DRIVER_MODULE_PATH     := "/lib/modules/sprdwl.ko"
WIFI_DRIVER_MODULE_NAME     := "sprdwl"

See also