Fixing Intermittent or No Output to an HDMI Monitor
Certain HDMI monitors show no output or intermittent output from a startx &
command. This condition occurs because the DRIVE PX and monitor are set to different pixel clock rates, even though they are set to the same refresh rate.
The P2363 FPDLink III-to-DVI adapter box used to connect to displays has a maximum pixel clock of 170 MHz. Therefore, to correct this problem, you must set the DRIVE PX to a display mode that uses a pixel clock of less than 170 MHz. For example, enter the following command to see the supported resolutions and pixel clocks:
xrandr -d :0 --verbose
Set the resolution of the monitor using the identifier from the previous command with the following command for the HDMI-0 port:
xrandr --output HDMI-0 --mode 0x18f