Hello,
I've got what appears to be a common problem with no solution on these pages; with DisplayPort MST.
I got two of these Dell monitors over the weekend, and spent around 3 hours trying to get MST to work with them. I got there eventually, and they worked great for about 36 hours.
In that time my computer rebooted twice with no issues. However, this morning I got up, powered on and the second in chain (End of my MST chain) suddenly is not recognized as a monitor. It displays my desktop, but only at 640x480. AMD Catalyst can see it, but refers to it as "No Display Connected".
My configuration is a Gigabyte Radeon HD 7950 powering these two Dells (on a single DP MST chain), a Compaq Q2022a on HDMI and another on DVI. The first dell also has a USB Bluetooth and USB WiFi dongles plugged in, and the second dell draws it's USB capabilities from the first. Both were working absolutely fine when I went to bed, and this morning the second in the chain wasn't.
I'm looking to buy up to four more of these for a stacked tri-monitor setup, but I need them to be more reliable before I can justify spending that much! I love the thin bezel, and MST is a must for the setup I want, but the reliability is an essential too, I don't want to spend an hour a day fixing it all...
Thanks