Hi Dawn, On Thu, 22 Jun 2023 at 18:09, Dawn HOWE <dawn.h...@alten.com> wrote:
> I am developing an (embedded) medical device which is required to have a > touchscreen display and also mirror the output to a monitor connected via > HDMI. The device is using Wayland/Weston on TorizonCore (based on a yocto > kirkstone). I am able to get the display extended from HDMI to LVDS, but > not have the output mirrored to both displays. I posted a query on the > Toradex community, and received a response that Weston may not be capable > of doing this. ( > https://community.toradex.com/t/apalis-imx8-hdmi-and-lvds-display-not-mirroring-cloning/19869 > ). > > > > I have searched and found some old posts from several years ago indicating > that it was not supported, but may be with a patch. I understand that > “same-as” configuration in weston.ini does not work for my scenario. > > > > What is the current state of cloning/mirroring to two different outputs, > but on the same card. E.g (card1-HDMI-A-1 and card1-LVDS-1): > > ls /sys/class/drm > > card0 card1 card1-HDMI-A-1 card1-LVDS-1 renderD128 > renderD129 version > Weston can currently mirror it if the display driver directly supports it. You can use the same-as configuration option (see man weston-drm) to enable this. If your display driver doesn't support this in the kernel, then Weston won't do it for now, but we are actively working on this and expect to have a branch capable of this within the next couple of weeks or so. Cheers, Daniel
