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Displayport

Martini1991 said:
Agh. ATI fails again lol.
I know a 5870 requires an active display port adaptor for eyefinity, I had no idea it'd require one period :|
Click to expand...

It's not an active one that's needed for a 5970. Active adapters are for converting DisplayPort to DVI/HDMI.

A passive adapter will work with a mini DP to DP on the basis that they'll be pin compatible.

The apple one, I suspect doesn't quite follow the proper DP specification, I've heard of a lot of problems with them when being used with non-apple hardware.

Standard miniDP and DP are pin compatible, have the same amount of pins, they just have a different connector.

The equivalent would be a USB A representing a normal DP port, and a mini USB representing a miniDP port, same cable and standard, just a far smaller connector.
 
kylew said:
It's not an active one that's needed for a 5970. Active adapters are for converting DisplayPort to DVI/HDMI.

A passive adapter will work with a mini DP to DP on the basis that they'll be pin compatible.

The apple one, I suspect doesn't quite follow the proper DP specification, I've heard of a lot of problems with them when being used with non-apple hardware.

Standard miniDP and DP are pin compatible, have the same amount of pins, they just have a different connector.

The equivalent would be a USB A representing a normal DP port, and a mini USB representing a miniDP port, same cable and standard, just a far smaller connector.
Click to expand...

Exactly, that is how it should work. I think the problem is my DP cable, so I am trying to find some hardware to test it.. more soon.
 
I'm gonna test a mini displayport enabled macbook with the monitor and cable/adapter tonight, hopefully it will show a faulty cable.
 
Interestingly the macbook pro wikipedia page has quite a bit of info regarding mini displayport: http://en.wikipedia.org/wiki/Mini_DisplayPort

"Although the Mini DisplayPort and regular DisplayPort signals are identical, the two connectors are physically different. To connect Mini DP to regular DP devices and vice versa, an adapter is needed."
 
Well just tested the macbook pro's mini DP connection and confirms that the cable and monitor are fine.

Its the HD5970 which appears to not output any resolution other than 640x480.

It clearly does not like my monitor for some reason.
 
Last edited:
DeadMan said:
Well just tested the macbook pro's mini DP connection and confirms that the cable and monitor are fine.

Its the HD5970 which appears to not output any resolution other than 640x480.

It clearly does not like my monitor for some reason.
Click to expand...

I've read/heard (from HardOCP and WSGF) that the apple adapter doesn't work particularly well with non-apple hardware, I'd suspect that is your main problem here.
 
Just tried a new 5870 with displayport and the same result monitor shows as supporting only 640x480 no other capable resolutions available.

Any ideas?
 
I am having the same problem...

I have an XFX 5970 Black Edition running 2x Dell 2408WFP and a 32" HDTV. One of the 2408's is running through DP using the cable that was packaged with the monitor and the Mini DP adaptor bundled with the card and the HDTV and the other monitor are running through DVI. The Display Port monitor will only output at 640x480 whilst the other 2 run at normal resolution :confused:
 
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