Re: [tlug] 2x 4K display as remote Linux desktop

[Francois Cartegnie <fcartegnie@example.com>]

Le 06/04/2015 10:40, Kalin KOZHUHAROV a écrit :
> ::: hardware
> I couldn't find any thin/zero-clients (hardware) that support even
> single 4K, is that just market (lack there of)?
> A simple gen4 Core Intel CPU should be fine (not planning on anything 3D-heavy).

I highly doubt it would provide dual 4K DP.

> Currently, I am thinking of Shuttle DS81 with 16GB RAM and Core i5 as box.
> Alternatively Intel  NUC5i5MYHE with 16GB.
> 
> ::: software
> Not really a lot of research here, since most of the time I use simple
> X11 forwarding via ssh to display remote windows on my local running X
> session. Next on my todo list is to start using xpra.

For 4K displays you do not want raw X which isn't compressed (ssh layer
does, but suboptimal).

> Given 24x4K displays, it is obvious a good challenge to make big/dense
> video wall (gathering displays together) ;-) Anybody did that before?

"Video" and "display" wall have different requirements, especially with
remote multiple outputs (shared hw acceleration for decoding, hw
acceleration encoding OMX for remote display).

Note that 4K hw acceleration only exists on latest nvidia architecture.
Other cards are stuck to 2K. (you can check with vdpau)

Francois