Teclast X98 3G and Onda 975w (Bay Trail): Force shutdown, battery not detected

[Ossi Uusimaa]

Please, help me to fix this force shutdown problem. Here is all information that I have found. I'm willing to everything I can to use Android x86 on Teclast X98 3G.

• Device: Teclast X98 3G
  
• CPU: Intel Atom Bay-Trail Z3735D (64x)
  
• RAM: 2GB
  
• Storage: 32GB
  
• OS: Windows 10 Pro (32-bit)
  
• Mode boot: EFI, version "Teclast BIOS11.09.2014"
  

I can install these Android x86 builds using Android-x86 Installer UEFI Version:

• Remix OS 64-bit
• Android X86 5.1-rc1 64-bit
• Android X86 4.4-r3 EFI
• Android X86 4.4-r2 EFI
• "x98 3g android-x86.img"

However when I try to boot Android x86 it will immediately shut down because battery or power supply is NOT detected. Android shows only 0% battery and it forces to turn off the tablet. It doesn't matter if tablet is connected to usb charger or not. I can't use the tablet at all on Android because tablet will shut down immediately.

I have found that someone made partly working Android x86 4.4.4 build for Teclast X98 3G. You can find the thead from Teclast forum. However the download links are dead. I can only download data.7z file which has "data.img". Here is all information that I have found from the build:

3.18.2+
user@osboxes #21
Wed Jan 21 11:33:17 CET 2015

OpenGL driver version
GL Vendor: Intel Open Source Technology Center
GL Renderer: Mesa DRI Intel(R) Bay Trail x86
GL Version: OpenGL ES 3.0 Mesa 9.2.0-devel (git-c5c43d6)

android_x86-userdebug 4.4.4 KTU84Q eng-carbon.20150114.164528 test-keys

I know that it is possible to boot Android x86 on Teclast X98 3G without force shutdown since people have reported which parts are working (check out the pictures). Currently the situation is this I believe:

Working:

• The touch
  
• WIFI
  
• Graphics card
  
• Card reader
  

Not working:

• Battery
  
• USB power supply
  
• GPS
  
• Bluetooth
  

When I try to boot Android x86 4.4.4 build which is named "x98 3g android-x86.img" I see these errors:

[ 0.114047] ..MP-BIOS bug: 8254 timer not connected
[ 0.341761] pnp 00:03: can't evaluate _CRS: 1
[ 2.293365] i8042: No controller found
[ 2.305550] ioremap error for 0x5da0a000-0x5da0b000, requested 0x10, got 0x0'
[ 2.310880] otg_wakelock_init: No USB transceiver found
Detecting Android-x86.... found at /dev/mmcblk0p4

I found these messages on Google Group Android x86 forum which might be useful:

• Is it possible to close the function "force shutdown when can't detect battery" in Android x86
  
• "This release can boot by Bay trail tablet Z3735D, while force halt after 1 minutes because it cannot detect the battery BQ2744..."
  
• Drivers need to merge to android x86 kernel mainland.
  
• Teclast X98 3G, at present android x86 kitkat status as:
  
• Works: graphics internal emmc,sd card reader, volume/power buttons, sound, power off/reboot wifi (rtl8723bs)
  
• Doesn't works: adjust brightness, suspend, battery, rear camera, front camera, accelerometer (for auto screen orientation), touchscreen, bluetooth

This issue is same for Onda V975w but someone probably fixed that on 4pda also (link):

• Launched for tablet Onda V975w v2 new build-x86 5.1 android RC1. Android-x86-5.1-rc1.iso - wouldn't start, infinitely blinking cursor. For Android-x86_64-5.1-RC1.in the IMG to start, everything is bright, beautiful, but the root was not working, even in the terminal ALT + F1 (it says something about incompatibility between 32 and 64 bits). If You do not see the battery and shuts off during boot. Accelerometer horizontal orientation. Touch, wifi, sound is present. No Bluetooth. The volume buttons do not work, the button works. In General, looks more attractive than 4.4.

This might be the solution:

perjantai 17. heinäkuuta 2015 20.50.30 UTC+3 Сергей Трофимов kirjoitti:

On my Onda V975i V2 not work bluetooth and battery indicator.
Could you add them to the kernel?
Patch battery - https://bugzilla.kernel.org/show_bug.cgi?id=83941#c29
Bluetooth driver - https://github.com/lwfinger/rtl8723bs_bt
And a small request. Please, turn 90 degrees to the accelerometer.

Someone was able to boot Ubuntu x86 on Teclast X98 3G (link). This might be helpful to fix this force shutdown problem.

How could I make my Teclast X98 3G not to shutdown?