On Mon, Dec 16, 2013 at 4:19 PM, Daniel Vetter daniel@ffwll.ch wrote:
This usually happens if the hpd isn't properly recessed and we start the i2c transaction while the physical connection hasn't been established properly yet. If you're _really_ slow and careful you can probably even break your current delay (presuming this theory is correct).
Hmm yes, I think you are probably right. Without touching the HDMI cable I disconnect and reconnect the power cable of my TV. Presumably that plug is more "atomic" :)
When I do that, it detects the resolution fine.
Do you have any suggestions on how to fix this then? Anything nicer than e.g. a 1 second delay before processing hpd events? That would still fail in the "slow connect" case but might be the best option?
Daniel