Re: Tiling display support

[Dan Ritter <dsr@randomstring.org>]

George Shuklin wrote: 
> On 12/18/20 9:55 PM, Dan Ritter wrote:
> > George Shuklin wrote:
> > > I continue to choose hardware carefully, and the next issue (I found a lot
> > > on it) is support for tiling displays. They uses multiple streams inside
> > > DisplayPort to achieve high resolution with high frame rate. It's called MST
> > > (vs classic single SST), and I found few people complaining about issues
> > > with it. All those complains are relatively old (2+ years).
> > > 
> > > Does someone run desktop with 4k screen and high frame rate (150 fps+)? What
> > > monitor and gpu are you using? Are you having any issues?
> > 
> > There are no 4K 150Hz monitors currently commercially available.
> > 
> > There are some 4K 120Hz monitors, starting at $800 or so.
> > 
> > What is your use case?
> > 
> > -dsr-
> 
> Oh, thanks, I've reread specs. It says 'refresh rate up to 240Hz', but for
> full resolution it's 5120 x 1440 | 60 Hz. There is LG, which promises 3840 x
> 2160 144Hz. I'll be more careful.
> 
> Anyway, my concern is MST support in Linux. Or, can 4k 120Hz fit through a
> single DP (SST mode)?


The Radeon 6900XT has DisplayPort 1.4.

The NVidia 2080GTX has DisplayPort 1.4.

DP 1.4 supports 4K at 120Hz.

DP 2.0 has not yet shown up.

What are you trying to do?

-dsr-