LG Gram install Ubuntu with USB

I'm trying to install Ubuntu 18 LTS on an LG Gram 17 laptop. I created a bootable USB with the Ubuntu 18 image. I disabled already secure boot and also removed signatures (I think it is called setup mode). And the problem is that I'm always getting the same result, unable to install Ubuntu:

Failed to open \EFI\BOOT\NULL - Not found
Failed to load \EFI\BOOT\NULL: Not found
start_image() returned Not Found

I've tried many different ways to generate the image, from Windows 10, from Ubuntu 18 itself, using different images... hence I don't think that is the problem. I think it is a configuration on my computer, but I not able to fix this issue even searching these specific strings.

Thanks for helping me!

6

3 Answers

It sounds like you got past that point but are now hitting acpi errors. According to this gist you can get past those errors by disabling Thunderbolt RTD3 in the BIOS.

1

I noticed that my bootable USB only worked right after I saved the UEFI configuration. If restarted my machine, then the bootable usb was not able to boot, not even after power off.

I also had disabled secure boot and legacy OS support turned on. I'm not sure if those two options are required to be able to boot with a USB, although based on what I've read disable secure boot is necessary.

Also, to avoid issues when installing Ubuntu consider do the following before:

Good luck!

4

I solved it in 17z990 following aust1n proposal.

a) Enter BIOS/UEFI. b) Go to Advanced. c) Ctr+Alt+F7 to really activate Advande options. d) Go to SW Guard Extensions (SGX) and move from Enabled to Disabled.

Save and voila... the USB stick runs.

A couple of unimpotant points (I guess). a) The flash drive I did was made through dd (sudo dd if= of=/dev/sdb (TAKE CARE YOU CHOOSE THE CORRECT ONE). This way it is functional but in some cases the USB Pen is hard to move back to standard Vfat/Fat32 partitioning. b) At this last attempt I moved the usb pen from the right side usb to the left side. I don't think it has anything to do with the solution of the problem, yet...

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