Re: "EDID checksum is invalid"

Linus Torvalds torvalds@linux-foundation.org writes:

I'm assuming even the hdmi +5V line is under sw control at least for power management reasons. Maybe dpms off turns it off, and shouldn't? My monitor actually says "No HDMI (HML) Cable" when I do "xset dpms force off". Maybe that's normal, but maybe that's indicative of dpms turning things a bit *too* off?

How about getting a breakout cable so we can actually check the +5V line to see when it turns off?

Total Phase makes one, although they only have the DVI ones in stock. A couple of HDMI to DVI converters would let you use this.

http://www.totalphase.com/products/video-dvi/

I've even got an i2c protocol sniffer if you want to see what's going on the DDC bus directly.