April 6, 20242 yr When using X11VNC in SBC without a connected display, everything works well on some assemblies and the screen resolution is 1024 x 768. But I could change that in xorg.conf. But now, either in kernel 6.x.x, or in bookworm, I have a 720x576 composite video output resolution, since HDMI is not connected. And there is no way I can change the resolution and make sure that the composite video output is not used. HELP me Edited April 6, 20242 yr by Energokom
April 19, 20242 yr Seems to be a kernel thing that has changed... Made me curious and I found this: https://forums.raspberrypi.com/viewtopic.php?t=325309 Obv not a solution for you since the tread is about rpi OS (but other hardware outside of rpi is actually mentioned). You might get some good info on how to move forward reading that. I do not know how to do this on armbian. Maybe you can use x11vnc (I have no idea if this exists in the repos) and set the resolution as described here (very old thread): https://stackoverflow.com/questions/12050021/how-to-make-xvfb-display-visible/40678605#40678605 Or maybe you can do the solution mentioned here, where you get a cheap usb > hdmi adapter for a few $$ that fools the SBC that it has a monitor connected.
October 11, 20251 yr First resize framebuffer to a convenient one and then start x11vnc xrandr --fb 1920x1080 -d :0 x11vnc -display :0
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