How to do mode setting in Wayland

[Zhu, Lingyun]

Hi,

I'm trying to set mode for a monitor from 4K at 60Hz to 4K at 30Hz (all supported) under wayland/weston.
But it seems there's no api for doing this.
The only mode setting related api is wl_output::mode event, but it's a notifying event.

How can I change the mode of a monitor under wayland/weston?


Thanks,
Lingyun

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