Medion Lifetab S9714 (medion-kai)
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![]() Medion Lifetab S9714 | |
Manufacturer | Lenovo |
---|---|
Name | Medion Lifetab S9714 |
Codename | medion-kai |
Released | 2012 |
Hardware | |
Chipset | NVIDIA TEGRA 3 |
CPU | NVIDIA TEGRA 3 Quad-Core 1.2 GHz |
GPU | NVIDIA TEGRA 3 (Ultra Low Power GeForce) |
Display | 1280 x 800 touchscreen |
Storage | 32 GB internal storage |
Memory | 1 GB |
Architecture | armv7 |
Software | |
Original software | Android 4.0 / 4.1 |
postmarketOS | |
Category | testing |
Pre-built images | no |
Flashing |
Works |
---|---|
USB Networking |
Works |
Internal storage |
No data |
SD card |
No data |
Battery |
No data |
Screen |
Works |
Touchscreen |
Works |
Multimedia | |
3D Acceleration |
No data |
Audio |
No data |
Camera |
No data |
Camera Flash |
No data |
Connectivity | |
WiFi |
No data |
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
Maintainer(s)
Users owning this device
How to enter flash mode
To start fastboot mode:
- boot into recovery by holding volume-down and power button at the same time, then
adb reboot bootloader
To unlock bootloader in fastboot mode (CAUTION: this will erase userdata! Backup before doing this!): fastboot oem unlock
Installation
My procedure was:
- Backup all important user data
- Unlock bootloader (see above)
- Install CWM recovery by going into fastboot mode and then running
fastboot flash recovery A2109_CWMrecovery-6.0.1.9d.img
- Backup Android installation on SD card
- Follow installation guide (note that flashing rootfs can take a few minutes without feedback, just wait)
- After flashing has finished, the screen should show the Medion logo and a notice saying "Cold booting linux"; after that, the postmarkedOS logo and then the demo should come up.
Notes
Apparently, the device was manufactured by Lenovo for vendor Medion and is similar to Lenovo's A2110 / A2109 boards. Some information about the IdeaTab A2109.
WiFi
Still trying to get WiFi working. Collected information so far:
Chip for WLAN 11b/g/n and Bluetooth 3.0: Broadcom BCM4330
PCI id according to system/etc/nvram_4330.txt: 14e4:4360
Kernel config parameters in vendor's config:
grep -i "bcm" config | grep -v "^#" CONFIG_BCMDHD_CFG80211=y CONFIG_BCMDHD_WIFI_CONTROL_FUNC=y CONFIG_BCMDHD_HW_OOB=y CONFIG_BCMDHD_CSCAN_ENABLE=y CONFIG_BCMDHD_INSMOD_NO_FW_LOAD=y CONFIG_BCMDHD_FXN_FW_PATH="/system/vendor/firmware/bcm4330/fw_bcmdhd.bin" CONFIG_BCMDHD_FXN_NVRAM_PATH="/system/etc/nvram_4330.txt" CONFIG_BCMDHD_FXN_195_89=m CONFIG_BCMA_POSSIBLE=y
BCM-related files in vendor's ROM:
find . -iname "*bcm*" system/vendor/firmware/bcm4330 system/vendor/firmware/bcm4330/fw_bcmdhd_p2p.bin system/vendor/firmware/bcm4330/fw_bcmdhd.bin system/vendor/firmware/bcm4330/fw_bcmdhd_apsta.bin system/lib/modules/bcmdhd.ko system/etc/firmware/bcm4330.hcd system/bin/bcm4330_bt_fw_loader.sh
find . -iname "*4330*" system/vendor/firmware/bcm4330 system/etc/nvram_4330.txt system/etc/firmware/bcm4330.hcd system/bin/bcm4330_bt_fw_loader.sh
What I tried so far:
- Created subpackage
$pkgname-nonfree-firmware:nonfree_firmware
fordevice-medion-kai
locally, includingfw_bcmdhd.bin, nvram_4330.txt, fw_bcmdhd_apsta.bin, fw_bcmdhd_p2p.bin, mfg.bin
, all are copied to/lib/firmware/postmarketos/bcm4330/
- Adjusted
CONFIG_BCMDHD_FXN_FW_PATH
andCONFIG_BCMDHD_FXN_NVRAM_PATH
accordingly - Rebuilt and flashed
- Configured
/etc/network/interfaces
according to WiFi#Using_wpa_supplicant
Result:
sudo /etc/init.d/networking restart * Starting networking ... * lo ... ip: RTNETLINK answers: File exists [ !! ] * wlan0 ... ip: ioctl 0x8913 failed: No such device [ !! ] * ERROR: networking failed to start
Related links:
- asus-grouper has similar hardware but the kernel params are named slightly differently: CONFIG_BCMDHD_FW_PATH vs CONFIG_BCMDHD_FXN_FW_PATH
- config file very similar to nvram_4330.txt
- chromeos commit
- android commit
- linux wireless drivers page - seems 14e4:4360 is NOT supported
See also
- Device package
- Kernel package
- Vendor Android kernel sources in a GitHub repository
- CWM recovery is available here
- Direct link for CWM for Jelly Bean / Android 4.1
- Direct link for CWM for Ice Cream Sandwich / Android 4.0