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SteamOS installer fails to boot on Lenovo V14 G2 ALC laptop

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Active
Tech stack
linux
Domain
operating-systems

Research direction

Start by reproducing the SteamOS installer boot on the Lenovo V14 G2 ALC, testing both the regular and fallback entries from the GRUB-style menu. Compare the boot behavior with the reported Fedora Live result and use the attached screenshots to identify where kernel loading fails; done means the installer boots on this hardware.

Written by the indexing model from the issue text.

Description

Your system information

Hi, I am trying to install the SteamOS beta from https://store.steampowered.com/steamos/download/?ver=steamdeck&snr=100601___ and it doesn't even load the installer on my Lenovo V14 G2 ALC laptop.
Secure Boot is off- it lands me at the GRUB-style boot screen.

I've tried this on multiple USB sticks, and it's seemingly just SteamOS that has problems- Fedora KDE 44 Live has no issues, and I was able to install Windows 10 on this laptop without issues.
I upgraded to the latest BIOS available from Lenovo while I had Windows 10 installed.

I try loading SteamOS from the GRUB menu (both regular and fallback images), but fallback takes me back to the GRUB boot menu, and the regular one says Error: you must load the kernel first.

Image

I've attached some screenshots of the errors.
I do have a video of the boot process, but GitHub doesn't like my phone's MP4 file.

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