ivangrid wrote:Thank you for fast reply.
But in the list there are:
These values are valid if hdmi_group=2 (DMT)
hdmi_mode=77 2560x1600 60Hz
hdmi_mode=78 2560x1600 75Hz
hdmi_mode=79 2560x1600 85Hz
hdmi_mode=80 2560x1600 120Hz reduced blanking
What does it mean? RPi support 2560x1600?
No. That is the list of all the standard CEA/DMT modes. Additionally there is a pixel clock limit which means modes bigger than 1920x1200@60 are not supported.
[You could try overclocking the pixel clock with
int config.txt, where the default limit is 162000000, but that is untested and unsupported]