HDMI strange behavior


I did some search on internet but I could not find anyone talking about this.
So, I’m sorry if this was discussed before.

I’ve built an image with qte based on Angstrom setup-scripts (angstrom-v2013.06-yocto1.4) and meta-beagleboard linux-mainline_3.8 kernel.
If I remove “quiet” from optargs on uEnv.txt the HDMI interface does not work. I did the same test on the default angstrom-v2013.06 image and it was reproduced too.
On boot and on poweroff the kernel prints a lots for traces related with drm.

I’s it a known issue?

Kind Regards,

Diego Sueiro

Any thoughts?

Cloud someone test it?

Diego Sueiro