Hi Sascha, On Mon, 6 Feb 2023 at 15:49, Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> wrote: > On Mon, Feb 06, 2023 at 03:04:48PM +0100, Sascha Hauer wrote: > > I guess a first step would be to limit the maximum resolution of vopl > > to what the hardware can do. We would likely end up with 1080p by > > default then for the applications. > > I did that, but the result is not what I expected. Discarding a mode in > the connector means it won't show up in the connectors list of modes. > Discarding it in the CRTC though means the mode is still exposed by the > connector, but actually trying to use it then fails. > > This means when discarding the mode in the CRTC the screen stays black. > > I am not sure where I should go from here. You've done the right thing. Userspace should detect this and try with alternative CRTC routing. The kernel shouldn't be trying to solve this problem. Cheers, Daniel