Hi,

I'm trying to understand the limits of the screen resolutions of the mstsc /multimon option of the remote desktop client. I have 2 displays at 3840x2160, Win8.1Pro with a 2012R2 RDSH server. If i understand it, the supported resolutions are 4096 X 2048 per monitor with a maximum of 16 monitors, those were the specs for Win08R2 in 2009 at least.

But i have some results that are a bit puzzling to me;
- if i use 2x 3840x2160 with /multimon, i only get one RDS display
- if i set my main display to 2560x1440 and the second to 3840x2160, /multimon works as expected (showing 2 RDS displays)
- if i set my secondary display to 2560x1440 and the main to 3840x2160, i only get one RDS display.
- if i use /span, i get a session with 7680x2160 (not sure thats relevant, but mentioning it).
- if i use xfreerdp on ubuntu, i get the same results.

So why can't i use 2x 3840x2160 and why does it work when i set my main display to 2560x1440 (with the second being 3840x2160). Can anyone enlighten me?

Hi Dennis,

Personally, I don't have related experience regarding multimonitor, you may get insights from other forum community members.

Best Regards,

Amy

Hi Dennis,

Are there any progresses at the moment?

I just had an idea that this might be some kind of limitation for resource usage regarding RDS display.

To verify this, you may reduce the color depth to see whether higher screen resolution can be achieved.

Best Regards,