[PATCH weston v10 0/1] Head-based output configuration API a.k.a clone mode infrastructure

[Pekka Paalanen]

On Wed,  6 Jun 2018 14:30:04 +0300
Pekka Paalanen <ppaalanen at gmail.com> wrote:

> From: Pekka Paalanen <pekka.paalanen at collabora.co.uk>
> 
> Hi all,
> 
> all of the clone mode infrastructure has landed. There is just this one
> patch remaining that actually allows one to use it through weston.ini.
> 
> Mind, this may be hard to test, because most contemporary PC graphics
> devices might not support shared-CRTC clone mode at all. So if you try
> this and face a frozen or black screen, it's likely that your hardware
> just doesn't support this. An indication of no support is an error in
> Weston log saying "atomic: couldn't commit new state" or "set mode
> failed". Unfortunately, Weston does not recover from modeset failures
> yet, but you should be able to quit gracefully with the usual
> Ctrl+Alt+Backspace. You can still see in the Weston log how Weston tried
> to configure clone mode.
> 
> I have used an i.MX6 based system to test.

Hi,

Ville Syrjälä was kind enough to give a list of Intel support:

i915 cloning support:
 gen2: DVO(non-LVDS encoders)+VGA
 gen3/4: nope
 g4x: VGA+HDMI HDMI+HDMI
 ilk-ivb,vlv: VGA+HDMI
 hsw+: nope


Thanks,
pq

> This is also available in a GitLab(!) branch here along with the other
> patch (force-on output) depending on this one:
> https://gitlab.freedesktop.org/pq/weston/commits/clonemode-v10
> 
> 
> The old Phabricator task (obsolete):
> https://phabricator.freedesktop.org/T7727
> The GitLab issue:
> https://gitlab.freedesktop.org/wayland/weston/issues/22
> 
> 
> Thanks,
> pq
> 
> Pekka Paalanen (1):
>   weston: support clone mode on DRM-frontend
> 
>  compositor/main.c  | 492 ++++++++++++++++++++++++++++++++++++++++++++++++++---
>  man/weston-drm.man |  12 ++
>  2 files changed, 484 insertions(+), 20 deletions(-)
> 

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