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HDMI output stopped working from Pandaboard ES

Hi,

We are facing one problem with Pandaboard's HDMI output port. We have around 8 Pandaboard ES with OMAP4460 processor.

HDMI output stopped working suddenly in between working condition. This happens on three different panda board on different time frame. We are not able to figure out whether it is hardware problem or software issue.

We are not the only who facing this issue. Please refer below link who faced the same issue:

http://comments.gmane.org/gmane.comp.embedded.pandaboard/10260

I also got below link regarding HDMI PHY bug on OMAP4. I am not sure whether it is correct or not.

http://us.generation-nt.com/omap4-hdmi-phy-bug-work-around-stable-help-206586962.html

Can any body tell us where is the exact problem ? How we can fix this problem and re-use our Pandaboard ?

Thanks,

Hitesh Gambhava