just a short question, if someone came across the same issue.
RPi 4B 4GB with LE 9.2.8 freshly setup. I need to remotely connect via VPN to this little box using Dispmanx VNC server (client is VNC Viewer in Windows).
The LE is connected to a 4k TV and Gui size is limited to 1080, resolution at 4k. All works fine, like SSH via VPN, Chorus, but VNC only displays a black screen. Interestingly (on phone) the user sees the mouse moving or sees the keypresses on the TV. During setup the LE was headless and VNC connected fine, but only with resolution of 1024x768. TV on or off make no difference (hdmi_force_hotplug is set).
So VNC connects, but only black screen here in my client. Could it be that 4k is simply not supported? I googled the world, but found no further info.
Any idea or report if it works would be helpful.
PS: I saw the other thread concerning the suggestion to use Chorus, but that won't help in my case, as I need to guide a person remotely through the screens to explain and educate.