Switched to Debian Buster recently; games became slideshows

[Nimta63]

I previously used SparkyLinux 4.20 for about a year, when I chose to update the OS a couple days ago just about everything broke, so I switched to standard Debian 10.4 "Buster".

Everything up until now has been working perfectly out of the box, loving the ease of use.

I finally had time today to play some steam games, but unfortunately, nothing seems to want to run higher than 10 FPS at any point. For the record, I'm using a Ryzen 2200 G OC'd to ~3800Mhz, its integrated graphics at ~866Mhz, and 16GB 2667Mhz RAM. Games like Terraria should not be running at ~8 FPS, and until the switch, they didn't. Other issues such as certain missing background layers in some games and others' complete refusal to even launch makes me think that there's somehow a driver issue.
I can list other specs if need be.

EDIT: Upon closer inspection, the very short boot process displays a warning about missing firmware for half a second. In my defense, it's on-screen for a very short period of time and the one boot-up I do per-day happens to coincide with the time I'm checking my phone and the warning looks exactly like the POST on my old XP machine did, nothing out of the ordinary to me.
Exact text copied for reference:

Code: Select all

[    0.596101] AMD-Vi: Unable to write to IOMMU perf counter.
[    1.224109] [drm:amdgpu_pci_probe [amdgpu]] *ERROR* amdgpu requires firmware installed
[    1.224305] See https://wiki.debian.org/Firmware for information about missing firmware

EDIT 2: Okay, so there doesn't seem to be an obviously correct driver/firmware for my particular setup on that site. The instructions also don't say anything about Debian 9 or 10, so it feels like the page might be outdated. I do, however, have the newest version of the Win10 driver for my iGPU now, although I'm not sure if that helps any.

[stevepusser]

It's one of the most FAQs here!

You need the non-free firmware: https://wiki.debian.org/AtiHowTo

[Head_on_a_Stick]

Debian buster outperforms Windows 10 for gaming framerates on my Ryzen hardware

[Nimta63]

And now mine does too.
Took me way longer than it should have to ~follow instructions~ (about an hour) but nevertheless thank you!