We are having issues getting our U3415W monitors to work on a couple Precision T3600 with AMD FirePro V4900 (FireGL V) graphics cards. I've gone through steps from a similar troubleshooting posts for a different adapter but without working results.
I start the machine with only this monitor connected. You can see the boot options and the machine posts fine, shows the Windows loading screen, but once it reaches login the screen goes blank and I can only change the cable options from menu buttons. I've set the machine to DP 1.2 off from another machine that works fine with this monitor but this still doesn't work.
Is the AMD FirePro V4900 supported with this monitor and has it been tested and working by anyone else?