How do we want to deal with 4k tiled displays?

[Dave Airlie]

On Tue, Jan 28, 2014 at 1:52 PM, Keith Packard <keithp at keithp.com> wrote:
> "Pierre-Loup A. Griffais" <pgriffais at valvesoftware.com> writes:
>
>> It seems the X server should be responsible for both making sure the two
>> halves are laid out properly (right now they're in reverse order) and
>> hidden from clients. This database of quirks would ideally live in the
>> server itself where it can be easily leveraged by everyone shipping
>> DDXen.
>
> Yeah, at some level, it would have been good to separate the device
> configuration from the logical partition of the whole X screen into
> 'monitors'. One nice thing that would have easily allowed was the
> creation of virtual 'monitors' for vnc or even DisplayLink. As it is,
> we've managed (once again) to link a particular hardware interface to an
> application capability. Sigh.
>
> We do have such an abstraction today, called Xinerama, but it seemed
> like the right plan was to deprecate that and encourage applications to
> use RandR directly.

I'm also not sure how much of this the X server should be doing, we
are moving away from X servers,

I'd really like fbcon and wayland to work on 4k monitors, so at least
from my POV we should be hiding as much of this as possible in the
kernel drivers for KMS users.

Dave.