Hi everyone!
First, thanks for a very good site with much good information.
I have a an issue understanding where my problem is (hardware/firmware/driver/other), below is the hardware I have available.
1 - ATI 5850 Graphic card (at the moment with 10.12 Preview)
3 - DELL 2209WA TFT screens (normally use the 76Hz trick on them but have tried normal PNP driver also and 60Hz)
1 - Samsung LCD TV (LE40A557)
1 -
Accell UltraAV DP to DVI-D adapter (p/n B087B-002B)
1 - HTC 220V-USB charger (5V - 1Amp)
So my issue is that I have a very hard time to get a picture on the TFT screen that use the DP-DVI adapter, often I don't get any picture and some time I do when I go for a 2 screen setup (DVI + DP) and I can't find any reason for this. What will work every time is to use two TFT screen with my LCD TV (I use the adapter with the TV most of the time).
I have tried to power the adapter from the computer USB or from the HTC charger but it don't make any difference.
Anyone that could give me some suggestions to try out?