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From: "Carlos E. R." <robin_listas@es.invalid>
Newsgroups: comp.os.linux.misc
Subject: Re: ATI/AMD GPUs
Date: Thu, 14 Aug 2025 11:42:35 +0200
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On 2025-08-14 11:26, Nuno Silva wrote:
> On 2025-08-14, Carlos E. R. wrote: 
>> On 2025-08-14 09:08, c186282 wrote:
>>> On 8/14/25 12:58 AM, rbowman wrote:


>>>     I'd always had ISSUES with AMD - and thus
>>>     avoid them to this day. They are ALMOST
>>>     Intel compatible ... almost ....
>>
>> I had and have trouble with Intel video. My current laptop and desktop
>> are AMD. Not a single problem.
> 
> In general, AMD GPUs have made for smooth experiences in the situations
> where I've used them. But two things:
> 
> 1. I think radeon is among the drivers which for some reason override
>     the correct resolution information. That is, the display dimensions
>     are obtained by EDID and this allows to compute the actual
>     resolution, in a way that'd just make things work, but the driver
>     overrides that with some default value.
> 
>     Maybe there's a setting to disable this which I've overlooked, my
>     workaround has been to resort to setting it with
>     
>         xrandr --dpi output-id
> 
> 2. There was an issue with radeon and VGA outputs in some GPUs that
>     resulted in incorrect colors in the output [1].
> 
> Besides that, how's power saving these days? Is this less of a problem
> with the newer driver (amdgpu?)?

Not a problem in my laptop, AFAIK.

Laicolasse:~ # inxi -G -C
CPU:
   Info: 8-core model: AMD Ryzen 7 PRO 5875U with Radeon Graphics bits: 64
     type: MT MCP cache: L2: 4 MiB
   Speed (MHz): avg: 1600 min/max: 1600/2000 cores: 1: 1600 2: 1600 3: 1600
     4: 1600 5: 1600 6: 1600 7: 1600 8: 1600 9: 1600 10: 1600 11: 1600 12: 1600
     13: 1600 14: 1600 15: 1600 16: 1600
Graphics:
   Device-1: AMD Barcelo driver: amdgpu v: kernel
   Device-2: Luxvisions Innotech Integrated RGB Camera driver: uvcvideo
     type: USB
   Display: server: X.Org v: 1.21.1.11 with: Xwayland v: 24.1.1 driver: X:
     loaded: amdgpu unloaded: fbdev,modesetting,radeon,vesa dri: radeonsi
     gpu: amdgpu resolution: 1920x1080~60Hz
   API: OpenGL v: 4.6 Mesa 23.3.4 renderer: AMD Radeon Graphics (radeonsi
     renoir LLVM 17.0.6 DRM 3.57 6.4.0-150600.517.gb0b7b4d-default)
Laicolasse:~ #

> 
> 
> [1] https://bugs.freedesktop.org/show_bug.cgi?id=27478 (But IIRC this
> wasn't fully fixed as of 2010? At least I *think* I remember seeing it a
> few years after that. Hopefully it's fully fixed now. [2] has a photo of
> the issue.)
> 
> [2] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/548709/comments/9
> 
> 


-- 
Cheers,
        Carlos E.R.