Weston mirror/clone to 2 different displays

Dawn HOWE dawn.howe at alten.com
Thu Jun 22 17:02:07 UTC 2023

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


The information contained in this e-mail and any attachments are intended solely for the addressees. If you have received this email in error, please contact the sender and delete the email from your system.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/wayland-devel/attachments/20230622/15f2eda7/attachment.htm>

More information about the wayland-devel mailing list