Hi,
I have same problems with my brand new 3 X U2414H Dell monitors like others described in :
http://en.community.dell.com/support-forums/peripherals/f/3529/t/19566131
http://en.community.dell.com/support-forums/peripherals/f/3529/t/19563839
I have read in details above mentioned forum posts before I wrote this post.
Since 3 days I was trying to find reason why I can't run my monitors in this 3 monitors DP chain (by the way same happened in Windows 8.1 and Ubuntu)
In my case only first monitor in chain can work, next two monitors are of (black).
Catalyst can recognize all 3 monitors but I cant run next two monitors in chain,
Even I can't run my chain using power off mode for monitor and restart trying to be detected.
I'm very worried what should I do with this 3 pieces of monitors ?
Looks like they have hardware or their bios errors and problems.
I hope that since that discussion started (examples of two chain of posts) any solution has been found !
Looking forward for prompt reply !