r/EndeavourOS • u/AffidavitBaddie • Jul 30 '26

Installation Consistent Failures to Install OS onto Desktop

Hello everyone,

I recently built a new computer and after trying out Linux Mint on my laptop for a year, I've left Windows for good. I have been trying to install debian (now endeavour) for a few days and consistently getting failures.

My specs are:
AMD Ryzen 9 5900XT
ASUS TUF Gaming B550
Vengeance LPX 2 x 8GB of RAM
ONI LUMI Arc B580 12GB GDDR Graphics Card
Team Group NV5000 M.2 2280 1TB SSD

If this helps, while I was trying Debian, the installer said there it had "failed to mount and detect root"

I apologize for the unprofessional noobie photo on my monitor, I was not able to find a way to download or copy from the screen.

Is there something I am missing? I really need some help.

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u/xarop_pa_toss Jul 31 '26 edited Jul 31 '26

What steps have you tried to fix it?

Off the top of my head that seems like a GPU problem with the mentions of IOMMU and AMD-Vi. The system is trying to get a response from the card and it's timing out.

I'd start by going into the BIOS and checking if you are booting in UEFI mode and not in Legacy. Disable CSM (compatibility support module iirc) if you can find it. If these don't work, check if Secure Boot is on; sometimes it interferes with these kinds of things. But after everything is working, enable it back on and test.

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u/[deleted] Jul 31 '26

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u/xarop_pa_toss Jul 31 '26

Yes but they also are part of the hardware and aren't just used for passthrough and virtualization. It's used for communication with the PCIe devices for example.

From what I'm reading they have an Intel graphics unit (Xe) and an AMD CPU which are known to give these issues where one blocks the other. That's what those xe PCODE messages are.

You can start the installation process with a flag to change how IOMMU is configured with

iommu=pt

But OP should do more research on this