is 4k desktop possible on freebsd-12?

[tech lists]

On 10/10/2018 11:17, tech-lists wrote:
> I'm trying to get xorg to display 4k. The context is:
> 
> FreeBSD 12.0-ALPHA8 r339084 amd64
> ports r481640
> AMD RX580 GPU
> Asus X99 Extreme3 mobo
> cpu: intel e5-2699v4
> 48GB RAM
> Samsung UE48JU6410U monitor connected via HDMI
> 
> drm-next-kmod-4.11.g20180822

Hi, just to follow up to this,

I'd run out of time to work on this so installed latest ubuntu desktop,
then ran xrandr and it showed 4k as the top resolution. I didn't have to
make any modifications:

[snip]
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 connected primary 1920x1080+0+0 (normal left inverted right x
axis y axis) 1872mm x 1053mm
   3840x2160     30.00 +  25.00    24.00    29.97    23.98
   4096x2160     30.00    25.00    24.00    29.97    23.98
[/snip]

and then, additionally, installed boinc-client-opencl and boinc was able
to see the GPUand use it for crunching.

On FreeBSD I couldn't see a way of making the boinc client OpenCL-aware.

On the plus side, FreeBSD was much more stable on this hardware than
Ubuntu. Had to disable hyperthreading in the BIOS to stop it crashing
every few hrs on Ubuntu.

It would be interesting to know, if possible, what Ubuntu is doing that
FreeBSD isn't on this hardware.

thanks to all who replied/tried to help,
-- 
J.