Dell Wyse ThinOS Version 8.5 and ThinOS Lite 2.5 Operating System Release Notes

Support for multi-monitors in RDP

ThinOS supports multiple-monitor display to launch RDP desktops on each monitor.

User scenario:

Connect multiple monitors to ThinOS device.
In the Display Setup dialog box, disable Mirror Mode, and configure the display layout.
Launch an RDP desktop with full screen.

Table 1. RDP display capability matrix . RDP display capability matrix
Destination end point	Maximum resolution per monitor—Enable force span	Maximum display support—span monitors
Windows 7 SP1	4096 (w) x 2048 (h)	4096 (w) x 2048 (h)
Windows 8.1	8192 x 8192	6 x 4K
Windows Server 2008 R2	4096 (w) x 2048 (h)	4096 (w) x 2048 (h)
Windows Server 2012 R2	8192 x 8192	6 x 4K
Windows 10	8192 x 8192	6 x 4K
Windows Server 2016	8192 x 8192	6 x 4K

Table 2. RDP H.264 decoding matrix . RDP H.264 decoding matrix
Unit type	GPU	Session	Windows 10/Windows Server 2016		Windows 8.1/Windows Server 2012 R2
Unit type	GPU	Display resolution	H.264-AVC444	Decoding	H.264	Decoding
Wyse 5070 Extended thin client—Pentium processor	AMD	3840 x 2160	Enabled	Software	Disabled
		2560 x 1440	Enabled	Software	Disabled
		2048 x 1280	Enabled	Software	Enabled	Hardware
		1920 x 1200	Enabled	Software	Enabled	Hardware
	Intel	3840 x 2160	Enabled	Software	Disabled
		2560 x 1440	Enabled	Software	Disabled
		2048 x 1280	Enabled	Software	Enabled	Software
		1920 x 1200	Enabled	Software	Enabled	Hardware
Wyse 5070 thin client—Pentium and Celeron processor	Intel	3840x2160	Enabled	Software	Disabled
		2560 x 1440	Enabled	Software	Disabled
		2048 x 1280	Enabled	Software	Enabled	Software
		1920 x 1200	Enabled	Software	Enabled	Hardware

NOTE:
- Windows 10/Window Server 2016 with H.264-AVC444 must be hosted in Microsoft RDS 2016 broker.
- Data is based on virtual machine without RemoteFX/vGPU enabled configuration.
- H.264 logs and H.264-AVC444 logs are hidden and not displayed in the Event Log tab.

For the list of known issues about the display in RDP, see Known issues .

NOTE: In an RDP session with VOR enabled by default (Windows 8.1 x86), connect to a session with full screen, and span more than four 4K monitors. In this scenario, if you play a video, the session may be disconnected automatically with an error log RDP: The server-side graphics subsystem is in an error state and unable to continue graphics encoding . This is because VOR /x-264 requires more resources such as RAM than the server resources. As a workaround, you must reduce the number of monitors or lower the resolutions or switch to other 64-bit operating system with more RAM.