*** This bug is a duplicate of bug 1592229 ***
https://bugs.launchpad.net/bugs/1592229
FYI, I fixed the 20.04 official ISO using rufus with a USB drive that my
machine could boot.
I thought I'd only used Ubuntu official, but apparently I'm using
https://github.com/hirotakaster/baytail-
bootia32.efi/blob/master/bootia32.efi judging from the signatures.
I also downloaded `grub-efi-ia32-bin_2.04-1ubuntu26_amd64.deb` from
ubuntu repositories. It's pre-compiled, so I'd imagine it includes a
signature (at least I was not bothered for one).
I used the tool Rufus to create a USB booting media from the official
20.04 Desktop ISO.
I unpacked usr\lib\grub\i386-efi, omitting the "monolithic" sub-folder
to my boot/grub folder
I then overwrote the .lst files and .cfg files with the same ones as the
amd64 image uses
Past that point, ubuntu set everything up for me, including detecting
and installing `grub-efi-ia32`
I had to swap out the heat-sink, because it was a thick piece of what
looked like Aluminium foil. I added a Raspberry-Pi 4b heatsink that did
not fit on a Pi-4B, and cut out a hole on the back of the tablet.
I lastly disabled the swap as it's an EMMC and swapping I believe will
wear out the media faster.
My only complaint is that the keys on the on-screen-keyboard are tiny
and I need to use a stylus, but I don't, I use the device as an 9"
portable screen, which I can interact with via micro-USB.
To install Ubuntu I did need a micro-usb to usb-A adapter, with a port
multiplexor so that I could use a wired keyboard and mouse.
Install took longer than 15 minutes, possibly an hour. Tablet boots and
I took a backup of the windows install in-case I ever want to go back
using gnome disks utility to a micro-SD that got particularly hot, but
did not die. Be careful with heat on these things.
Wi-Fi works
Touchscreen & orientation work
micro-SD works
There seems to be a 4MB drive that shows up. I backed it up to micro-SD, but
it's not a part of the eMMC. I'm assuming it's firmware and never touching it.
Intel graphics works and plays minecraft using optifine (works slower without)
Sometimes OOM crashes the entire device
I do turn off screen blanking
external HDMI via microHDMI -> full HDMI works
Lack of keyboard and mouse and no detection of primary touch device means the
tablet is unusable without at least a mouse via USB
If I'm honest, avoid buying these cheap devices, but I would be
interested to find out how to contribute grub-ia32-efi-bin for all
64-bit ISO's, just so people can get started.
I'd also be interested in automatically enabling the on-screen keyboard
for touch devices on intel Atom
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https://bugs.launchpad.net/bugs/1341944
Title:
32-Bit UEFI bootloader support needed
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