Hi, greetings from Germany!
I have some problems with my displayport connection. I am using two displays with my firepro V4800 and Windows 7 64bit: a HP LP2065 connected via DVI and a Dell U2413 connected via displayport.
This worked quite well for six months with the old 8.702-driver. Updating to the new 13.152.4-Driver caused a displayport link failure. The only resolution possible is 720x576 with 50 Hz. Switching back to the old driver everything works fine again. I tried both DP-connections.
Any suggestions what went wrong?