Re: AMD Radeon GPU recommendations?

[Andrius V <vezhlys%gmail.com@localhost>]

On Thu, Sep 11, 2025 at 8:08 AM Lloyd Parkes
<lloyd%must-have-coffee.gen.nz@localhost> wrote:
>
> Kia ora koutou,
> Can anyone recommend a good AMD Radeon GPU for use with NetBSD 11.99.x?
>
> I recently upgraded from 10.99.x to 11.99.1 and I'm having performance
> problems with my AMD Radeon R9 290. On the off-chance that I can't
> resolve these problems I would like to get some recommendations for a
> possible replacement GPU.
>
> As far as I can tell, the Radeon RX 6900 XT that I have is too new and
> doesn't seem to be matched by the AMDGPU driver.
>
> Thanks,
> Lloyd
>

Hi,

From my experience, unfortunately NetBSD 11 is indeed even more
difficult to use than NetBSD 10 in my initial testing.

From amdgpu department, I would say, NetBSD 11 is not usable for me
after upgrade :( (tried RX460 and RX5700XT), though the former worked
quite well in NetBSD 10 (without acceleration).
See my reported  kern/59629 and kern/59628 for the problems
encountered. Acceleration surprisingly enables in NetBSD 11, but it
leads to issues, like constant artifacts, instabilities and finally
complete X.org freeze (if not immediately on start).
Also mouse became very slow and inaccurate, slightly fixable with
xset, but accuracy still bad, windows seems not to get focus at times.

radeon(4) (I am using Radeon R7 370) works better (R9 290 is likely
radeon(4) too?) with `Option     "AccelMethod" "glamor" '.
Though constant artifacts still exist, which are not always pleasant
but typically "workaroundable" (refresh web page, select text, restart
app and similar actions). Performance is good though for me (opengl
code is accelerated). Also mouse issue is not present.
Far from perfect, but somewhat usable.
Unfortunately, don't have compatible nvidia cars if situation is any
better in that department...