We are trying to bringup a custom LVDS display of resolution 1024x600 through eDP to LVDS bridge(PTN3460). We have generated the custom edid and replaced it in default_720p_edid. But it is only affecting the HDMI output.
Both HDMI and DP edid values are replaced with our custom values. We verified the edid data with below command:
sudo cat /sys/kernel/debug/tegradc.X/mode
When checked using xrandr command the new resolution is reflected in HDMI, but it is not reflected in LVDS. We also got the below print with “xrandr” command:
xrandr: Output DP-0 is not disconnected but has no modes
I am attaching the display timings for reference:
Can anyone specify what needs to be done?
Note: When we used the standard values in default_720p_edid, both HDMI and DP edid data were same. But 720p was only reflected in HDMI and the LVDS was working on 640x480.