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I'm trying to dual-boot the MSI Alpha 15 with Windows 10 and Ubuntu 18.04.3. Everything has worked out fine, except for my external monitor which is not working.

The MSI Alpha comes with an AMD Ryzen 7 CPU and an AMD Radeon RX GPU, this makes it different from the more common Intel/Nvidia combination.

I have tried the Nvidia-based solutions as outlined here. I also installed the AMD Radeon Software for Linux (version 19.50 for Ubuntu 18.04.3). Both approaches did not solve the problem.

In addition, my HDMI port does not show up in xrandr.

How can I make Ubuntu recognize my display?

ulrichtsblr
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1 Answers1

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I had this problem when installing Fedora 32 on a new Alpha 15. On boot, I saw messages stating

AMD-VI Completion-Wait loop timed out.

I had to add amd_iommu=off to my kernel parameters.
Credit goes to the Arch lovers who solved this problem.

zx485
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Ron Naef
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