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Got a new fresh laptop Acer Swift 3 (SF314-41) without OS installed (in the boot manager I got only UEFI_SHELL).

Tried to install Ubuntu, but ended up with this. Then, I have tried to install another linux distro - Manjaro with bootable USB stick and got Security Boot Fail error. Then I tried to launch Windows 10 installation (created bootable USB stick with their MediaCreationTool20H2) and found out that it loads successfully (I didn't try to install it)!

Both Ubuntu and Manjaro from the same stick can be booted successfully on another laptop Fujitsu lifebook E 754. Security boot is disabled, rufus settings: partition scheme GPT, target system: UEFI (non CSM).

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    Have you tried turning off PSB / Secure Boot from the BIOS?
    – Darius
    Commented Feb 12, 2021 at 12:12
  • @Darius, as mentioned in question - yes.
    – Syar
    Commented Feb 12, 2021 at 18:05
  • "UEFI (non CSM)" means that UEFI is activated without compatibility mode. superuser.com/a/1284407/309301
    – eventHandler
    Commented Feb 12, 2021 at 19:40
  • So what should I do ?
    – Syar
    Commented Feb 12, 2021 at 19:57

1 Answer 1

Reset to default
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Inserting "iommu=soft" into /boot/grub/grub.cfg in bootable USB helped me. Details here.

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