Luc Verhaegen writes:

This happens depending on the monitor. Load detection is not part of the DDWG or whatever DVI specification, instead HPD and DDC are being depended on. So monitor manufacturers don't always try to put load on the digital lines.

At least HPD is not a totally reliable source of information on ATI as some (very few) cards contain wrong information in their connector tables.

You will find that, when you run rhd_conntest, the monitor only at certain times puts loads on the digital lines. We have seen the same problem with some other monitors...

So it is a problem with not the TMDSA load detection, but with the monitor attached to it, and a suitable strategy still needs to be proposed here.

It looks like we will have to face some uncomfortable facts and deal with the uncertainties in life. For TMDSA load detection this means we cannot fully trust a FALSE. Likewise for HPD we will have to take into account that the routing information may be incorrect. So we need something else that's more reliable. For digital outputs this would be DDC which is a hard requirement for DVI. The challange here is that DDC line may be shared between connectors which cannot physically be used together. Fruthermore some AtomBIOS connector tables are really broken. My all time favorite so far is in: http://bugs.freedesktop.org/attachment.cgi?id=16076 Cheers, Egbert. -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org