User guide

Appendix A: Using RGS with HP VDI 178
Svga.vramSize = <size in bytes of the VGA screen buffer>
This parameter tells the VMware virtual VGA device driver the size of screen buffer to use. This value may only
be set by directly editing the .vmx file of the virtual machine and is not propagated by clone and template
operations.
The default maximum screen resolution for ESX 3.0.1 running XP images is 1180x885 with 16 or 32 bit color
depth. This can be changed by setting the three svga.<X> parameters described above. The following table
shows several common screen size configurations.
Svga.vramSize
Screen Resolution svga.maxWidth svga.maxHeight
16bit color 32bit color
1280x1024 1280 1024 2621440 5242880
1600x1200 1600 1200 3840000 7680000
Dual 1600x1200 3200 1200 7680000 15360000
1680x1050 1680 1050 3528000 7056000
1920x1200 1920 1200 4608000 9216000
Dual 1920x1200 3840 1200 9216000 18432000
To compute Svga.vramSize values for other screen topologies, use the following formula:
H x W x D = V where
H = screen height in pixels
W = screen width in pixels
D = color depth in bytes (2=16bit, 4=32bit)
V = vramSize in bytes
A-2-3 Installing the RGS Sender in the virtual machine
The RGS sender is installed in the virtual machine the same way as on a physical machine. The installation CD or
ISO image must be mounted inside the VM, or the file images can be made available on a file share for
installation.
A-3 Running RGS diagnostics
You should run the RGS diagnostics utility, rgdiag.exe, following installation of the RGS Sender to determine
what additional OS configuration needs to be done to properly support RGS in the VDI environment. OS
configuration typically includes the following:
• Firewall configuration to allow rgsender.exe to pass through.
• Simple file sharing mode unset.
• Edit registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
NT\CurrentVersion\Winlogon\AllowMultipleTSSessions with regedt32 to 0 (zero)
For information on running rgdiag.exe, refer to the Section “Using the RGS Diagnostics Tool on Windows XP.”
A-4 Disabling the RGS warning popup
RGS alerts the user when the main console is still viewable. The hardware feature used for screen blanking is not
available in ESX virtual machines. Therefore, by default, this warning message appears on the user’s desktop.
The persistent “Sender Monitor is Viewable” popup can be removed by editing the rgsenderconfig file in the
RGS directory. This can be done by un-commenting the following line, and setting it as shown:
Rgsender.IsBlankScreenAndBlockInputEnabled=0