HDMI error occurs after using pi for around 10 minutes

[Zbaker1398]

Hi all! Just got my raspberry pi and was very excited to set it up though I've run into a bit of a problem. My pi is connected to a hdmi monitor via a hdmi cable. The monitor is NOT powered by the pi. Everything works fine for a while but after some time of usage the screen goes blank and displays "No HDMI cable". The pi remains on throughout. Here is my monitor http://www.dell.com/ed/business/p/dell-st2220l/pd


Any help would be awesome

[dom]

Try the boost setting from here:
http://elinux.org/R-Pi_Troubleshooting# ... VI_monitor

[Mobius]

Normally, the Pi needs to detect an HDMI device in order for it to output on that video port. Otherwise it defaults to the composite port. The ports are mutually exclusive. I suppose that it's possible that therre is a momentary loss of detection of the monitor by the Pi. One way around that is to force the HDMI connection to always be on. To do that, you can modify the /boot/config.txt file. You can also force the desired resolution. Here is my code from that file for my 1366x768 monitor:

Code: Select all

framebuffer_width=1366
framebuffer_height=768
hdmi_force_hotplug=1