What do you mean suspend? Are the vdi images have powersaving enabled, and they are sleeping, or just people logging out and back in again?
I open the VM with the VMWare console, click the suspend button and then unsuspend. And tadaa, it works.
Which video driver is installed in the master image? You may want to remove the VMware VSGA driver and use the Windows video driver. Did you look at the Horizon agent logs? The logs may provide insight into what is going on.
typically black screens are related to (either):
- wrong VGA driver (probably overwritten by a Vmware Tools update)
- Firewall settings
- VM configuration settings
Did you try with rdp or PCOIP?
What is the VGA settings on your deploy VM/desktop and also what is the setting of graphic acceleration on your desktop pool settings? Give more details about themPlease mark my comment as the Correct Answer if this solution resolved your problem