OK, finally took some time out to look into getting my three monitors connected up.
Framework “12th Gen Intel(R) Core™ i5-1240P” with “Intel Corporation Alder Lake-P Integrated Graphics Controller”
Operating System. Linux Mint 21 Vanessa
Monitors, I have three monitors, 2 X Dell U2414H and 1 X Dell U2419H, configured U2414H left, U2419H centre, U2414H right. Don’t think this makes a difference but figured I would mention it anyway. Aesthetically it looks better
MST is enabled on all but the last monitor in the chain
Connections and cables.
Laptop USB-C to left hand monitor standard DP in
Left monitor standard DP out to centre monitor standard DP in
Centre monitor standard DP out to right monitor micro DP in.
Works like a charm
For the life of me I couldn’t get the DP port on the laptop to work. Tried all four ports on the laptop, none worked, not even to a single screen, eventually settled on the USB-C
This type of setup is VERY picky about cables. I tried two different ones off Amazon, neither worked. In the end I spent a tad more than I would normally and went for Startech. These work fine.
Not really an issue but something to be aware of. It can take a good 5 seconds (ish) for the laptop (or maybe the screens?) to figure out a connection has been made. Initially I rebooted the laptop thinking it wasn’t working and as the system was shutting down the Linux Mint logo popped up on all three screens so I knew it was working.
Also, I am using the USB hub in the U2414H with a single connection from the laptop to the hub with peripherals (mouse, keyboard and Ethernet adaptor) plugged into the hub on the monitor. Every now and again there is a lag whilst typing and moving the mouse around. I think this may be a limitation of the hub in the screen.