Tbook16 Power SD card ejecting from time to time

[Virson Jay Lorenzo]

I just got my Tbook 16 Power recently and Im having an issue about my sd card keeps disconnecting itself and I dont know why. I need to reboot my tablet so it’ll detect again my SD card, i tried Samsung 32gb fat32/ntfs & sandisk 16gb fat32.. same result. Anyone can help me what to do?

[Shah Johan]

Same problem to me. Have you solved the problem?

[Buret]

Same for me, with W10

It seems to be a well known problem, with a bad card reader driver from teclast.

I found no solution.

[Jeff]

*Forget it, never works consistently*

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[Ferguson]

I read in some forums that this problem is a bios issue, not windows issue. It’s common in other tablets (chuwi, etc.)

https://forum.chuwi.com/thread-3250-1-1.html

Currently, I’m testing a bios setting (go to bios, Chipset- southbridge – SCC SDIO Support-> disabled; default setting: ACPI Mode).

For the momment, it is working for me (android & windows). But, be very very carefull touching bios settings.

Other forums recommend SCC SDIO Support and SCC SD Card Support settings in PCI Mode (default: ACPI Mode), but in my case, windows was fine without issues, but android was not working well (random restarts)

[Ferguson]

In windows I use intel drivers (i update to windows 10 creators, default windows drivers)

[Jeff]

Ferguson wrote:

I read in some forums that this problem is a bios issue, not windows issue. It’s common in other tablets (chuwi, etc.) https://forum.chuwi.com/thread-3250-1-1.html Currently, I’m testing a bios setting (go to bios, Chipset- southbridge – SCC SDIO Support-> disabled; default setting: ACPI Mode). For the momment, it is working for me (android & windows). But, be very very carefull touching bios settings. Other forums recommend SCC SDIO Support and SCC SD Card Support settings in PCI Mode (default: ACPI Mode), but in my case, windows was fine without issues, but android was not working well (random restarts)

That disabled built-in WiFi & Bluetooth on Android and Windows. When I tried PCI mode  on both, Android did indeed keep crashing, WiFi on windows was slower (worse reception) and I had to enter AP passwords again.

Then I tried SCC SDIO back to ACPI, and SCC SD Card to PCI. Android wouldn’t recognize the microSD as anything but corrupted. I rebooted, reinserted, even formatted another microSD, but all failed. Right after I rebooted with a different microSD card, it went straight to BIOS and I can’t access either OS anymore…

I was thinking of trying your settings with SCC SDIO Mode for WiFi set to DDR50, would that finally work for both Android and Windows? Anyways, I was going to restore from a disk image, but using my recovery USB requires me to boot from Windows first… Thank again regardless, are you from the Chinese forums?

*I only have 1 boot option in BIOS (UEFI: Built-in EFI Shell)… I’m screwed aren’t I? The internal disk speed was suspiciously slow.

[Ferguson]

Did you check this?

My solution to a stable SD card

I have no luck with bios settings… I’m testing with 32 GB sdcard fat32.

[Ferguson]

Sorry, 64GB sdcard with fat32.

[Ferguson]

Finally, perhasp I found a solution. For me it has been working for the last 24 hours.

Try to update bios from windows.

<b>Explorador de Windows -> Botón derecho del ratón encima de “este equipo” -> Propiedades -> Configuracion Avanzada del Sistema -> Hardware -> Administrador de dispositivos -> Firmware </b>

(settings -> devices admin -> firmware -> system firmware -> update -right mouse button)

(link in spanish)

https://www.htcmania.com/showthread.php?t=1187712

<b>UPDATE DE BIOS</b>

<b>1.-</b> Arrancamos la tablet en modo windows

<b>Explorador de Windows -> Botón derecho del ratón encima de “este equipo” -> Propiedades -> Configuracion Avanzada del Sistema -> Hardware -> Administrador de dispositivos -> Firmware </b>

Dentro de Firmware si lo desplegamos encontramos dos opciones

Firmware del dispositivo
Firmware del Sistema

<b>2.-</b> Con el botón derecho del ratón encima del Firmware del Sistema pulsamos “Actualizar software del conrtolador” -> Buscar Automáticamente software de controlador actualizado.
Esperamos a que lo encuentre y al finalizar nos habrá actualizado la bios a la versión 3.05 que no quita la opción de la SD en windows

[Jeff]

Basically, it’s in Device Manager. Funny you can only update the BIOS this way… Let us know if it’s still working, I just applied it myself.

Well, my tablet was revived thanks to flashing Android via Fastboot, booting from WINPE, and then restoring Macrium image.

But I still don’t really like it, and was already reverted back to my iPad Mini (just jailbroke it)…

[Ferguson]

For the moment it’s working (after update BIOS from Device Manager under Windows).

[Jeff]

Ferguson wrote:

For the moment it’s working (after update BIOS from Device Manager under Windows).

Yeah, I think that bug is finally resolved. Never ejected once after that, even for days of no shutdown.

But ever since I reflashed it (not sure if caused or worsened BIOS update or not), Android has been draining battery quicker and apps detect it’s temperature as 0°C or overheating… Have you seen such issues?

I may make another thread once I really feel like troubleshooting again. Thanks again for the fresh content!

[Ferguson]

I found android v1.03 with better battery consumption than v1.06. In my case, BIOS update have not caused battery drain…

[Jeff]

Ferguson wrote:

I found android v1.03 with better battery consumption than v1.06. In my case, BIOS update have not caused battery drain…

OK, if you use an app like Ampere, will it show the proper temperature instead of “overheating”? Just making sure, thanks.

[Author]

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