So this is regarding AMDGPU DAL as it currently exists in
https://cgit.freedesktop.org/~agd5f/linux/log/?h=3Damd-staging-4.7,=
which from my
understanding contains the most up-to-date public-facing iteration of the D=
AL
patch.
So I have an HDMI 2.0 4K 60 Hz monitor (Vizio D40u-D1) as my main display
connected to an XFX RX 480. I'm using a kernel compiled from the branch lis=
ted
above.
Now the issue I'm having is that I'm stuck at 30 Hz. The RX 480 is capable =
of
driving this monitor at 60 Hz @ 4K, which works under Windows. Trying t=
o switch
to 60 Hz either results in no signal, or just 30 Hz again.
I had the same issue in the past with the proprietary Linux Nvidia drivers =
on a
960 GTX I used to own, and after several months, the devs there were able to
figure out what the issue is, describe it in a forum post, and get a fix in.
See here:
https://devtalk.nvidia.com/default/topic/9399=
71/linux/4k-60hz-works-in-windows-not-in-linux/
So what I'm hoping is that a similar fix would work in DAL.
I can provide logs on request (not sure to log right now).
Thanks!