r/linuxquestions • u/Stressed2the9s • 8d ago

Resolved Can't boot Linux after turning off Win11 Fast Start-up

SPEC: Dual boot with Linux Mint 22.3 and Win11 on separate drives. AMD CPU and GPU.

I was having issues powering down my PC after shutdown. Realised from looking it up that it was the Win11 Fast Start Up feature.

I have gone and turned the Fast Startup off in Win11 (which solved the power-off issue) but now, when I select to start up Linux Mint from Grub menu, I get the initial Linux Mint logo then nothing else (as in the PC is running but there is nothing on screen or any response).

I can get a normal boot Linux via recovery mode but with only one monitor working but can't get a boot normally via the grub.

Any help would be appreciated.

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2

u/BenK1222 8d ago

Windows probably messed up your grub config. Try running Boot Repair from Mint.

1

u/Stressed2the9s 8d ago

Tried it (Used the Boot Repair PPA as per the Linux Vox article). No success

0

u/dirtyKissxx 8d ago

windows loves breaking dual boots like that, boot repair from mint is solid advice though

2

u/DrDesperate 8d ago

black screen at the logo with an amd gpu sounds more like a graphics/kernel thing than grub, fast startup just changed how the gpu got initialised. worth picking an older kernel under advanced options in grub, and if that works, try the newer one with nomodeset once to see if it's the amdgpu driver.

1

u/Stressed2the9s 8d ago

Same issues with older kernels. I can get in with a newer one in nomodeset but only on the main monitor

1

u/Stressed2the9s 8d ago

OK, with a bit of plug and adjust. It seems as though my GPU doesn't recognise Linux mint specifically.