[Goran Sevo]

Try this:

https://askubuntu.com/questions/1030929/ubuntu-18-04-lts-display-flashes-and-turns-upside-down-how-to-fix#:~:text=4%20Answers&text=Your%20laptop%20has%20an%20gyroscope,in%20the%20upper%20right%20corner.

If I remember well, you can uninstall that too.

sudo apt remove iio-sensor-proxy

https://askubuntu.com/questions/1035209/how-to-turn-off-screen-rotation-in-ubuntu-18-04-lts

[Goran Sevo]

Thanks Brad, I will do so! Nothing major really, just out of curiosity as everything else is working fine, and for a long time:)

[Goran Sevo]

Hi Brad, thanks for your great work!!! I’ve been using Ubuntu on my Teclast Tbook 16 Power for more than a year now without any issues (Linuxium’s iso respin script is the magic word). Recently, I downgraded (from 17.10) to 16.04 LTS for compatibility as it is on all my other computers  (and yes, I am one of those weird Unity fans:). I also figured out how to get touch screen support, but I’m not using it any more since I don’t really need it – for me this is essentially a super cheap & ultra portable laptop. My question is: has any one figured how to use cameras on these Chinese Intel tablets? Some time ago I found on GitHub that it was not entirely impossible but did not follow up. Is any one familiar with this issue? Thanks, Goran

[Goran Sevo]

Can you see emmc when you boot from USB drive? To Windows or Linux?

As for connecting tablet to PC via usb, I had that issue some time ago. If memory serves me well, it requires certain sequence: power on tablet only after it is connected to a PC. Took me a while  to figure out this.

To my knowledge, replacing emmc would represent major service repair (if at all possible).

[Goran Sevo]

I think that in my BIOS  eMMC write protect is set to “disabled”.

BTW, does anyone know if is it safe to set RAM speed above 1066 MHz? Apparently, on pre M5F8 models it used to be?

[Goran Sevo]

Hope this helps a bit (post 10, Jorge)

Tbook 16 Power bios

[Goran Sevo]

There is an update for M5F8 on the English site  (http://www.teclast.com/en/firmware/)  dated 2017-07-28.

But the download was not possible at the time I checked due to exceeding dl quota in Dropbox.

[Goran Sevo]

Had the same problem. Finally worked on USB C cable after I noticed notifications in the left top corner (swipe down and react accordingly).  I played by not only with MTP<>charge switching several times in “USB debugging” section, but also tried turning “usb debugging option” on and off several times until the miracle happened:). Very frustrating, agree:)

[Goran Sevo]

Can you access EFI shell from BIOS and try booting it from there? On my unit EFI shell doesn’t work (M5F8).

I also have a problem connecting Android to another PC (Win and Linux alike), the tablet stays unrecognized (nothing shows up in “lsusb” on linux). Tried choosing MTP type of connection and different usb cables, nothing happens. Otherwise, USB ports are working fine.

[Goran Sevo]

This little thingy did a trick for me! Just check enable when the program starts.

Please use it at your own risk as I obtained it from another forum (X16), and I don’t know does it interfere with previous BIOS tweaking on Tbook 16 Power (mine is M5F8).

Cheers, Goran

 

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[Goran Sevo]

Has anyone tried tweaking this tablet’s BIOS (UEFI firmware) with AMIBCP? It provides quite a lot of additional information which can be edited and made available to the user & then reflashed (by AMI Aptio MMTool I think). Provided that it uses AMI bios? This potentially unlocks some hardware features initially not available to linux. To what extent is this bios normally user friendly anyway? For a start, is it e.g. possible to disable SecureBoot? Although this approach can seriously affect Windows performance, it should be always possible to return the original bios with spi programmer. Or is it, things might have changed since I last played with another intel tablet, and I am neither expert nor aware of the Cube i7 Book full specs. Obviously, I (still) don’t have this tablet, but it looks rather promising linux wise.

[Goran Sevo]

Something’s wrong with these links. The tread name should read “How to Create a EFI/UEFI GRUB2 Multiboot USB drive to boot ISO images”

[Goran Sevo]

I haven’t tried this yet, but if it is indeed working as it should, might be relevant for multiple testing with significantly reduces workload:

http://ubuntuforums.org/showthread.php?t=2276498
http://ubuntuforums.org/showthread.php?t=2259682&p=13300523#post13300523

My apologies if I got it wrong (I am just a hobbyist after all, quite an admirer of you your work though :).

[Goran Sevo]

Thank you for your fantastic work guys!

I have a cheap Teclast 8″ dual OS tablet (sort of, branded as VIVAX, but it says Teclast in UEFI coredump). Tried two dozen various linux images, and the only way to get proper boot and screen output used to be over HDMI. Until yesterday that is, when I discovered that replacing “quiet splash” with “nomodeset” it actually boots up all the way through and outputs to internal tablet’s display. One serious downside is that resolution remains 800×600 and cannot be changed with xrandr as it doesnt recognize type of display (tried VGA-0 throug 2, LVDS1 and everything else that came accross my mind).

Previously I tried to install Intel graphic drivers but it wasn’t working. Haven’t tried after this recent discovery.

Any thoughts how can I get proper output working on internal display (1280×800) ? Thanks heaps!

PS dmesg indicate EFI VGA….. and fb0 is VGA

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