Dell Wyse ThinOS Version 9.1.4097, 9.1.4234, 9.1.5067, and 9.1.6108 Operating System Release Notes

High Efficiency Video Coding (HEVC) or H.265

In ThinOS 9.1.4234, VMware Blast Extreme supports High Efficiency Video Coding (HEVC). HEVC is also known as H.265. This feature is disabled by default. To use this feature, select the Allow High Efficiency Video Decoding (HEVC) check box from Connection Manager > Global Connection Settings > Horizon. You can go to the VMware Horizon Performance tracker and see Encoder Name to verify whether HEVC is working. If the name contains HEVC, the feature is working. HEVC in Blast Extreme requires both the ESXi hosts that support the virtual desktops, and RDSH servers to have NVIDIA Tesla or newer graphics cards to offload the encoding. HEVC does not work with only ESXi CPU encoding. If there are no supported graphics cards present, the H.264 or JPEG/PNG encoding is used. For more information, see the VMware Blast Extreme Optimization Guide at techzone.vmware.com.

Limitations

• If you launch a session that has been launched from another device, the HEVC feature does not work. The server uses H.264 in this scenario. To use HEVC, sign off other sessions before connecting to the session from the ThinOS client.
• You must upgrade Wyse Management Suite to version 3.5 or later to support the HEVC feature.