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print0

Member

Registered: 2026-04-11

Posts: 1

3D graphics slow after upgrade

After a recent system upgrade (the last one had admittedly been many months ago) 3D graphics (namely: supertuxkart which my kids "need") are very slow (< 1 FPS). Before the update the frame rate was ok.

$ sudo lspci -vnnd ::03xx
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Caicos [Radeon HD 6450/7450/8450 / R5 230 OEM] [1002:6779] (prog-if 00 [VGA controller])
        Subsystem: PC Partner Limited / Sapphire Technology Device [174b:a004]
        Flags: bus master, fast devsel, latency 0, IRQ 125
        Memory at c0000000 (64-bit, prefetchable) [size=256M]
        Memory at dfe20000 (64-bit, non-prefetchable) [size=128K]
        I/O ports at e000 [size=256]
        Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, IntMsgNum 0
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
        Capabilities: [150] Advanced Error Reporting
        Kernel driver in use: radeon
        Kernel modules: radeon, amdgp

If I read this table correctly then I need mesa and xf86-video-ati. I have these installed, as well as linux-firmware-radeon, and removed all other packages as far as I could.

Here are the logs for a short STK run: https://pastebin.com/p3m9MuX7

I tried installing old versions of mesa and linux-firmware-radeon from the cache, but then the game doesn't even start.

Any ideas what more I can try?

Edit: Tried a few more games, all seem to work fine. So it must have something to do with STK more specifically. But I also tried an older version of the game and it's still slow. Downgrading sdl3 and sdl2-compat does not help

Last edited by print0 (2026-04-11 10:42:52)

xerxes_

Member

Registered: 2018-04-29

Posts: 1,047

Re: 3D graphics slow after upgrade

Maybe you should use mesa-amber (and xf86-video-ati) with this new kernel 6.19 ?

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 74,420

Re: 3D graphics slow after upgrade

I'd ask whether you get better performance w/ amdgpu , https://wiki.archlinux.org/title/AMDGPU … K)_support

 Kernel modules: radeon, amdgpu

But apparently caicos is a northern island?
https://www.x.org/wiki/RadeonFeature/#d … etingnames

If I read this table correctly then I need mesa and xf86-video-ati.

You do not *need* xf86-video-ati - it's possible that the modesetting driver performs better - and this is only relevant on X11
=> Is this actually X11 or wayland?

loginctl session-status

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Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 14,898

Re: 3D graphics slow after upgrade

Maybe you should use mesa-amber (and xf86-video-ati) with this new kernel 6.19 ?

Only amd cards using r100 or r200 chipset need mesa-amber and cards with those chipsets haven't been produced in 20+ years.

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