Taks, it seems it turned out to achieve full repeatability of the start of graphics.
You need very little
conjure and dance with a tambourinefix grub.cfg, and have a hdmi monitor on hand.
Ubuntu 15.04 Daily Build vivid-desktop-amd64.iso from 13-Mar-2015 with kernel 3.19.0.9
To begin, remove grub.cfg from the quiet and splash download lines. (I did this because the image of March 6 hung up when the graphics were started).
Next, boot. Sometimes even the graphics start right away - but more often not.
If the schedule does not start (wait a few minutes) - connect hdmi. On the monitor of the graph, it will start 100%.
Turning off hdmi - voila, the graphics will start on the tablet itself.
Now for the work itself.
The sound works, though here you first need to conjure in alsamixer (when you see the number of points, do not fall).
There are hard volume and home buttons.
The SSD and the internal SD card are normally detected.
The touchscreen works, sometimes it is chopped off randomly. Or almost always when the screen turns off.
Capacity and battery percentages are shown.
From imperfections.
The brightness is not adjustable, the screen is not extinguished.
Wi-Fi, Bluetooth and FM radio (yes, we have FM radio) are not detected.
Touching is difficult to resize windows.
At the connected hardware keyboard (mine at least) blows the roof from time to time - the characters stick and accelerate like a rocket.
Work as a desktop.
If you connect a hdmi monitor, keyboard, mouse, and Wi-Fi dongle tested in Linux, you can use it (with some settings above) even now.
Posted on 03/14/2015, 21:20: Please give the most working version of Linux on this unit, so that the touch, wifi, and so that it does not hang.
And here and discuss the most workers.