Setting Up for Linux Desktops

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3D Memory settings
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vCPU and virtual memory settings for performance requirement
Video Memory (vRAM) Settings
When you create a Linux virtual machine in vSphere Client, configure the vRAM size as shown in
Table 1‑10. Set the vRAM size that is recommended for the number and resolution of the monitors that
you configure for the virtual machine.
Table 1‑10. Recommended vRAM Settings for 2D or vSGA Graphics
vRAM Size
Number of
Monitors Maximum Resolution
10 MB 1 1600x1200 or 1680x1050
12 MB 1 1920x1440
32 MB 1 2560x1600
48 MB 2 2048x1536
80 MB 2 2560x1600
128 MB 3 2560x1600
128 MB 4 2048x1536
These vRAM sizes are the minimum recommendations. If more resources are available on the virtual
machine, set the vRAM to larger values for improved video performance.
10 MB is the minimum vRAM size recommendation for a machine that is configured with a single monitor
at the lowest resolution.
You must power off the virtual machine to set the number of displays and the amount of video memory to
use, as described in Create a Virtual Machine and Install Linux.
Horizon Connection Server 7 does not automatically configure the vRAM settings on Linux virtual
machines like it does on Windows virtual machines. You must manually configure the vRAM settings in
vSphere Client.
If a Linux virtual machine is configured with a smaller vRAM size than is recommended, the following
issues might occur:
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Desktop sessions might be disconnected right after the initial connection is made.
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Autofit might fail to work. The desktop is then displayed in a small area of the screen.
If a Linux virtual machine's Number of displays value is less than the actual required count, one or more
monitors display blank for the desktop.
If you encounter an autofit issue with the recommended settings, you can specify a larger vRAM size.
vSphere Client permits a maximum vRAM size of 128 MB. If your specified size exceeds 128 MB, you
must modify the vmx configuration file manually. The following example specifies a vRAM size of 256 MB:
svga.vramSize = "268435456"
Setting Up Horizon 7 for Linux Desktops
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