I followed the Intel instructions for updating BIOS to install Linux to my:
It re-booted and ran Ubuntu correctly once. But now on second reboot I am getting problems. I now get this during boot.
"mmc0: Unknown controller version(3). You may experience problems."
Any suggestions how to proceed. I seem stuck at the moment.
Enter Bios settings Advanced > Boot > Secure Boot and verify that Secure Boot is disabled. If enabled uncheck it and press F10, confirmed by "Y" to save settings and exit to O.S.
You are using Ubuntu 18.10 or newer, right? I have heard that older versions (16.x) have bugs that can cause issues in UEFI support - like spurious entries in boot table.
Thanks for the tips! Yes secure boot was disabled.
I reverted back to the original 16.04 image and then finally it booted ok without this mmc error, but display colors were reversed on my display via HDMI (any HDMI port).
I finally figured a way to get that back to normal, and I will have to try installing 18.04 again some other day.
It's been a bit of a bear trying to install 18.x to this...
Wow, super!!! I have been floundering a bit through the instructions it came with, Intel search, ubuntuforums, google search.. with a variety of different posts that were roughly the same but didnt quite work. This looks like exactly what I needed!
I normally stick to Ubuntu LTS, thanks for this 18.10 pointer: great to see this got supported nicely there! If I leave Ubuntu LTS, I may then go to 19.04 to see how well it does.
If you get it working, respond and let us know. While you are at it, it will help others if you detail the changes in steps necessary to make it work.
You may try the following:
Intel NUC8i7HVK / Ubuntu 19.04
I do have Ubuntu 19.04 running now. My road there was a bit circuitous.
For completeness, this is what I did:
19.04 is working nicely for me so far.
I hope this helps some future reader who finds this thread from Googling :).
I also replaced kernel v4.15.0 with v5.2.8 now and so far so good.
Steps using ukuu:
sudo add-apt-repository ppa:teejee2008/ppa
sudo apt update
sudo apt upgrade
sudo apt-get install ukuu-gtk
=> install v5.2.8
=> reboot with F2 to make sure "Secure Boot" is disabled, else you may get "kernel xxx has invalid signature" from grub during reboot. I guess upstream versions like this don't have signatures?
After reboot: 'uname -a' to check kernel version.
It looks excellent now.