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Local VGA console is momentarily unblanked when Citrix Virtual Apps and Desktops changes resolution of the VM desktop#

Description#

When Citrix Virtual Apps and Desktops establishes a remote connection to a VM using vGPU, the VM’s local VGA console display in XenCenter is blanked (assuming the VM local console has not been disabled by setting disable_vnc=1 in the vGPU plugin’s parameters). If the Citrix Virtual Apps and Desktops session changes resolution of the VM’s desktop, the local VGA console momentarily unblanks, allowing a XenCenter user to briefly view the desktop.

Workaround#

Disable the VM’s local VGA console.

  • Citrix Hypervisor 8.1 or later:

    [root@xenserver ~]# xe vgpu-param-set uuid=<vgpu-uuid> extra_args=disable_vnc=1

  • Citrix Hypervisor earlier than 8.1:

    xe vm-param-set uuid=<vm-uuid> platform:vgpu_extra_args="disable_vnc=1"

Status#

Open

Ref. ##

NVIDIA-145/1375164