On Fri, 16 Oct 2015 02:32:50 +0200, Raymond Yau wrote:
Do it mean that only one DP MST port and no HDMI port on the same
graphic
card ?
No.
If there is only one HDMI and one Display Port, this mean that there are two pin complexes
Yes, and the mapping doesn't change in this case as before.
How about the name of jack detection kctl of three Display Port monitors which are created on the same pin complex but different dev_index ?
It's one of the models we've considered. Basically the number of devices can be up to 64 (or such) per pin. For Intel case, due to the limitation of converters, it's up to 3. For other GPUs that may drive more simultaneous outputs, the number increases in square. If a GPU may handle 16 outputs, it'll be 256 entries.
Although the 256 entries are certainly manageable as kctl, whether this is the best representation for user-space is a question.
Will three three display port monitor playback devices always play different stream even when the displays are in clone mode ?
The clone mode is another messy part...
If DP MST are dasiy chained, the unplug of the first monitor from
Display
Port will cause all DP monitor in the dasiy chain disconnect
Yes.
Do the power off of the Display Port in the middle of the dasiy chain also affect the last display port mointor in the dasiy chain ?
Possibly. But it's not what we really care, as this is the thing the graphics side should handle.
Takashi