Administrator Guide
Table Of Contents
- Dell Wyse ThinOS Version 8.5 Administrator’s Guide
- Introduction
- Getting started
- Configuring ThinOS using the First Boot Wizard
- Connecting to a remote server
- Using your desktop
- Configuring thin client settings and connection settings
- Connecting to a printer
- Connecting to a monitor
- Locking the thin client
- Signing off and shutting down
- Additional getting started details
- Classic desktop features
- Login dialog box features
- Accessing system information
- Global Connection settings
- Configuring the connectivity
- Configuring the network settings
- Configuring the remote connections
- Configuring the central configurations
- Configuring the VPN Manager
- Configuring the connection brokers
- Configuring Citrix
- Configuring the Citrix broker connection
- Citrix HDX RealTime Multimedia Engine or RealTime Optimization Pack
- Citrix icon refresh
- Using multiple audio in Citrix session
- Using Citrix NetScaler with CensorNet MFA authentication
- Configuring ICA connections
- ICA Self Service Password Reset
- QUMU or ICA Multimedia URL Redirection
- HTML5 Video Redirection
- ICA SuperCodec
- Anonymous logon
- Configuring the Citrix UPD printer
- Introduction to Flash Redirection
- Configuring VMware
- Configuring Microsoft Remote Desktop
- Configuring Dell vWorkspace
- Configuring Amazon Web Services or WorkSpaces
- Configuring Citrix
- Configuring thin client settings
- Introduction to TCX Flash Redirection
- Performing diagnostics
- BIOS management on ThinOS
- Security
- Automating updates and settings using central configuration
- Examples of common printing configurations
- Important notes
- Troubleshooting
- Firmware upgrade
- Frequently asked questions
2. Connection with TS gateway configured in unsupported OS (e.g. Windows Server 2008 R2), it uses TS gateway II and the
logs are displayed as shown in the following screenshot:
3. When remote connection with TS gateway III closed: There are no additional logs displayed in the Event Log tab.
Supporting RDP H.264 AVC444
RDP uses the ITU-T H.264 graphics compression (codec), also known as MPEG-4 AVC (Advanced Video Coding). In RDP
10, AVC/H.264 supports the full-screen AVC 444 mode. By default, this mode is enabled on thin clients for Windows 10 and
Windows 2016 remote sessions.
As a pre-requisite, navigate to Group Policy Editor (gpedit.msc) in Computer Configuration > Administrative
Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Remote Session
Environment, and enable the following policies:
● Prioritize H.264/AVC 444 Graphics mode for Remote Desktop connections
● Configure H.264/AVC hardware encoding for Remote Desktop connections
The original H.264 codec only transfers YUV420 frames. However, some chroma data from sampled YUV444 frames is
discarded. The feature that allows the lost chroma data of a frame is transferred using the same method as applied to
the sampled YUV420 data. This improves the image qualities with many artificial sharp edges, and mounts of regular color
boundaries, such as texts. Therefore, the image quality can be compressed using the same H.264 technology by using the same
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Configuring the connection brokers