Microsoft Windows Server

Virtual GPU Software R460 for Microsoft Windows Server Release Notes

Release information for all users of NVIDIA virtual GPU software and hardware on Microsoft Windows Server.

These Release Notes summarize current status, information on validated platforms, and known issues with NVIDIA vGPU software and associated hardware on Microsoft Windows Server.

1.1. NVIDIA vGPU Software Driver Versions

Each release in this release family of NVIDIA vGPU software includes a specific version of the NVIDIA Windows driver and NVIDIA Linux driver.

1.2. Updates in Release 12.4

New Features in Release 12.4

• Security updates - see Security Bulletin: NVIDIA GPU Display Driver - October 2021, which is posted shortly after the release date of this software and is listed on the NVIDIA Product Security page
• Miscellaneous bug fixes

1.3. Updates in Release 12.3

New Features in Release 12.3

• Security updates - see Security Bulletin: NVIDIA GPU Display Driver - July 2021
• Miscellaneous bug fixes

Feature Support Withdrawn in Release 12.3

• Red Hat Enterprise Linux 8.3 is no longer supported as a guest OS.

1.4. Updates in Release 12.2

New Features in Release 12.2

• Security updates - see Security Bulletin: NVIDIA GPU Display Driver - April 2021
• Miscellaneous bug fixes

Hardware and Software Support Introduced in Release 12.2

• Support for the following GPUs:
  • NVIDIA^® A10
  • NVIDIA RTX A5000
• Support for Red Hat Enterprise Linux 8.4 as a guest OS

1.5. Updates in Release 12.1

New Features in Release 12.1

• Miscellaneous bug fixes

1.6. Updates in Release 12.0

New Features in Release 12.0

• Miscellaneous bug fixes

Hardware and Software Support Introduced in Release 12.0

• Support for the following GPUs:
  • NVIDIA A100 HGX 80GB
  • NVIDIA A40
  • NVIDIA RTX A6000
• Support for Windows 10 October 2020 Update (20H2) as a guest OS

  Windows 10 May 2021 Update (21H1), which is a bug fix release for Windows 10 October 2020 Update (20H2), is also supported.

• Support for SuSE Linux Enterprise Server 15 SP2

This release family of NVIDIA vGPU software provides support for several NVIDIA GPUs on validated server hardware platforms, Microsoft Windows Server hypervisor software versions, and guest operating systems.

2.1. Supported NVIDIA GPUs and Validated Server Platforms

This release of NVIDIA vGPU software provides support for the following NVIDIA GPUs on Microsoft Windows Server, running on validated server hardware platforms:

• GPUs based on the NVIDIA Maxwell™ graphic architecture:
  • Tesla M6
  • Tesla M10
  • Tesla M60
• GPUs based on the NVIDIA Pascal™ architecture:
  • Tesla P4
  • Tesla P6
  • Tesla P40
  • Tesla P100 PCIe 16 GB
  • Tesla P100 SXM2 16 GB
  • Tesla P100 PCIe 12GB
• GPUs based on the NVIDIA Volta architecture:
  • Tesla V100 SXM2
  • Tesla V100 SXM2 32GB
  • Tesla V100 PCIe
  • Tesla V100 PCIe 32GB
  • Tesla V100S PCIe 32GB
  • Tesla V100 FHHL
• GPUs based on the NVIDIA Turing™ architecture:
  • Tesla T4
  • Quadro RTX 6000 in displayless mode
  • Quadro RTX 6000 passive in displayless mode
  • Quadro RTX 8000 in displayless mode
  • Quadro RTX 8000 passive in displayless mode

  In displayless mode, local physical display connectors are disabled.

• GPUs based on the NVIDIA Ampere architecture:
  • NVIDIA A100 HGX 80GB (supports only compute workloads on Linux with GPU pass through; graphics acceleration is not supported)
  • NVIDIA A100 PCIe 40GB (supports only compute workloads on Linux with GPU pass through; graphics acceleration is not supported)
  • NVIDIA A100 HGX 40GB (supports only compute workloads on Linux with GPU pass through; graphics acceleration is not supported)
  • NVIDIA A40 in displayless mode
  • Since 12.2: NVIDIA A10
  • NVIDIA RTX A6000 in displayless mode
  • Since 12.2: NVIDIA RTX A5000 in displayless mode

  In displayless mode, local physical display connectors are disabled.

For a list of validated server platforms, refer to NVIDIA GRID Certified Servers.

2.1.1. Switching the Mode of a GPU that Supports Multiple Display Modes

Some GPUs support displayless and display-enabled modes but must be used in NVIDIA vGPU software deployments in displayless mode.

The GPUs listed in the following table support multiple display modes. As shown in the table, some GPUs are supplied from the factory in displayless mode, but other GPUs are supplied in a display-enabled mode.

A GPU that is supplied from the factory in displayless mode, such as the NVIDIA A40 GPU, might be in a display-enabled mode if its mode has previously been changed.

To change the mode of a GPU that supports multiple display modes, use the displaymodeselector tool, which you can request from the NVIDIA Display Mode Selector Tool page on the NVIDIA Developer website.

2.1.2. Switching the Mode of a Tesla M60 or M6 GPU

Tesla M60 and M6 GPUs support compute mode and graphics mode. NVIDIA vGPU requires GPUs that support both modes to operate in graphics mode.

Recent Tesla M60 GPUs and M6 GPUs are supplied in graphics mode. However, your GPU might be in compute mode if it is an older Tesla M60 GPU or M6 GPU or if its mode has previously been changed.

To configure the mode of Tesla M60 and M6 GPUs, use the gpumodeswitch tool provided with NVIDIA vGPU software releases. If you are unsure which mode your GPU is in, use the gpumodeswitch tool to find out the mode.

For more information, refer to gpumodeswitch User Guide.

2.2. Hypervisor Software Releases

2.3. Guest OS Support

NVIDIA vGPU software supports several Windows releases and Linux distributions as a guest OS using GPU pass-through.

Microsoft Windows Server with Hyper-V role supports GPU pass-through over Microsoft Virtual PCI bus. This bus is supported through paravirtualized drivers.

2.3.1. Windows Guest OS Support

NVIDIA vGPU software supports only the 64-bit Windows releases listed as a guest OS on Microsoft Windows Server.

• Windows Server 2019
• Windows Server 2016 1607, 1709
• Windows Server 2012 R2 with patch Windows8.1-KB3133690-x64.msu (not supported on GPUs based on architectures after the NVIDIA Turing architecture)
• Windows 10 May 2021 Update (21H1) and all Windows 10 releases supported by Microsoft up to and including this release

2.3.2. Linux Guest OS Support

NVIDIA vGPU software supports only the 64-bit Linux distributions listed as a guest OS on Microsoft Windows Server.

• Red Hat Enterprise Linux 7.7-7.9
• CentOS 7.6, 7.7
• Ubuntu 18.04 LTS
• Ubuntu 16.04 LTS
• SUSE Linux Enterprise Server 15 SP2
• SUSE Linux Enterprise Server 12 SP2

3.1. A licensed client might fail to acquire a license if a proxy is set

Description

If a proxy is set with a system environment variable such as HTTP_PROXY or HTTPS_PROXY, a licensed client might fail to acquire a license.

Workaround

Perform this workaround on each affected licensed client.

1. Add the address of the NVIDIA vGPU software license server to the system environment variable NO_PROXY.

   The address must be specified exactly as it is specified in the client's license server settings either as a fully-qualified domain name or an IP address. If the NO_PROXY environment variable contains multiple entries, separate the entries with a comma (,).

   If high availability is configured for the license server, add the addresses of the primary license server and the secondary license server to the system environment variable NO_PROXY.

2. Restart the NVIDIA driver service that runs the core NVIDIA vGPU software logic.

   • On Windows, restart the NVIDIA Display Container service.
   • On Linux, restart the nvidia-gridd service.

Status

Closed

Ref. #

200704733

3.2. Disconnected sessions cannot be reconnected or might be reconnected very slowly with NVWMI installed

Description

Disconnected sessions cannot be reconnected or might be reconnected very slowly when the NVIDIA Enterprise Management Toolkit (NVWMI) is installed. This issue affects Citrix Virtual Apps and Desktops and VMware Horizon sessions on Windows guest VMs.

Workaround

Uninstall NVWMI.

Status

Open

Ref. #

3262923

3.3. 12.0 Only: Sessions freeze when Adobe Premiere with the Adobe Mercury Engine is used

Description

Sessions freeze when Adobe Premiere with the Adobe Mercury Engine is used. The session can freeze after 15-20 minutes of use or when a project is being exported.

Workaround

Status

Resolved in NVIDIA vGPU software 12.1

Ref. #

3230997

3.4. 12.0 Only: Issues occur when Blackmagic Design DaVinci Resolve is used

Description

Multiple issues, such as application crashes, application instability, and session freezes, occur when Blackmagic Design DaVinci Resolve is used. CUDA error 702 might also be observed.

Status

Resolved in NVIDIA vGPU software 12.1

Ref. #

3225521

3.5. 12.0, 12.1 Only: NVIDIA vGPU software graphics driver installation fails in Ubuntu guest VMs

Description

Installation of the NVIDIA vGPU software graphics driver from a .run file fails in Ubuntu guest VMs that are running Linux kernel version 5.8 or later.

Version

Ubuntu 20.04 LTS and 18.04 with Linux kernel version 5.8 or later

Workaround

Revert to a Linux kernel version earlier than 5.8.

Status

Resolved in NVIDIA vGPU software 12.2

Ref. #

3226853

3.6. NVIDIA Control Panel fails to start if launched too soon from a VM without licensing information

Description

If NVIDIA licensing information is not configured on the system, any attempt to start NVIDIA Control Panel by right-clicking on the desktop within 30 seconds of the VM being started fails.

Workaround

Restart the VM and wait at least 30 seconds before trying to launch NVIDIA Control Panel.

Status

Open

Ref. #

200623179

3.7.  Citrix Virtual Apps and Desktops session corruption occurs in the form of residual window borders

Description

When a window is dragged across the desktop in a Citrix Virtual Apps and Desktops session, corruption of the session in the form of residual window borders occurs.

Version

This issue affects only Citrix Virtual Apps and Desktops version 7 2003

Workaround

Use Citrix Virtual Apps and Desktops version 7 1912 or 2006.

Status

Not an NVIDIA bug

Ref. #

200608675

3.8. On Linux, the frame rate might drop to 1 after several minutes

Description

On Linux, the frame rate might drop to 1 frame per second (FPS) after NVIDIA vGPU software has been running for several minutes. Only some applications are affected, for example, glxgears. Other applications, such as Unigine Heaven, are not affected. This behavior occurs because Display Power Management Signaling (DPMS) for the Xorg server is enabled by default and the display is detected to be inactive even when the application is running. When DPMS is enabled, it enables power saving behavior of the display after several minutes of inactivity by setting the frame rate to 1 FPS.

Workaround

1. If necessary, stop the Xorg server.

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   # /etc/init.d/xorg stop
           

2. In a plain text editor, edit the /etc/X11/xorg.conf file to set the options to disable DPMS and disable the screen saver.

   1. In the Monitor section, set the DPMS option to false.
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      Option "DPMS" "false"
              

   2. At the end of the file, add a ServerFlags section that contains option to disable the screen saver.
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      Section "ServerFlags"
          Option "BlankTime" "0"
        EndSection
              

   3. Save your changes to /etc/X11/xorg.conf file and quit the editor.

3. Start the Xorg server.

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   # etc/init.d/xorg start
           

Status

Open

Ref. #

200605900

3.9. Microsoft DDA fails with some GPUs

Description

Microsoft Discrete Device Assignment (DDA) fails with GPUs that have more than 16 GB of GPU memory. After the NVIDIA vGPU software graphics driver is installed in the guest VM, a second display device appears on the GPU and the driver prompts for a reboot. After the reboot, the device disappears and the Microsoft Hyper-V Video device appears.

This issue occurs because less memory-mapped input/output (MMIO) space is configured for the operating system than the device requires.

Workaround

Perform this workaround in a Windows Power Shell window on the hypervisor host.

Set the upper MMIO space to the amount that the device requires to allow all of the MMIO to be mapped. Upper MMIO space starts at approximately 64 GB in address space.

            

            
Set-VM –HighMemoryMappedIoSpace mmio-space –VMName vm-name
        

mmio-space

The amount of MMIO space that the device requires, appended with the appropriate unit of measurement, for example, 64GB for 64 GB of MMIO space.

The required amount of MMIO space depends on the amount of BAR1 memory on the installed GPUs and the number of GPUs assigned to the VM as follows:

mmio-space = 2 ˟ gpu-bar1-memory ˟ assigned-gpus

gpu-bar1-memory

The amount of BAR1 memory on one of the installed GPUs. For example, in a server in which eight GPUs are installed and each GPU has 32 GB of BAR1 memory, gpu-bar1-memory is 32 GB.

assigned-gpus

The number of GPUs assigned to the VM.

vm-name

The name of the VM to which the GPU is assigned.

The following example sets the upper MMIO space to 64 GB for the VM named mygpuvm, to which one GPU with 32 GB of BAR1 memory is assigned.

            

            
Set-VM –HighMemoryMappedIoSpace 64GB –VMName mygpuvm
        

For more information, see Deploy graphics devices using Discrete Device Assignment on the Microsoft technical documentation site.

Status

Not an NVIDIA bug

Ref. #

2812853

3.10. DWM crashes randomly occur in Windows VMs

Description

Desktop Windows Manager (DWM) crashes randomly occur in Windows VMs, causing a blue-screen crash and the bug check CRITICAL_PROCESS_DIED. Computer Management shows problems with the primary display device.

Version

This issue affects Windows 10 1809, 1903 and 1909 VMs.

Status

Not an NVIDIA bug

Ref. #

2730037

3.11. NVIDIA vGPU software graphics driver fails after Linux kernel upgrade with DKMS enabled

Description

After the Linux kernel is upgraded (for example by running sudo apt full-upgrade) with Dynamic Kernel Module Support (DKMS) enabled, the nvidia-smi command fails to run. If DKMS is enabled, an upgrade to the Linux kernel triggers a rebuild of the NVIDIA vGPU software graphics driver. The rebuild of the driver fails because the compiler version is incorrect. Any attempt to reinstall the driver fails because the kernel fails to build.

When the failure occurs, the following messages are displayed:

            

            
-> Installing DKMS kernel module:
        ERROR: Failed to run `/usr/sbin/dkms build -m nvidia -v  460.32.03 -k 5.3.0-28-generic`: 
        Kernel preparation unnecessary for this kernel. Skipping...
        Building module:
        cleaning build area...
        'make' -j8 NV_EXCLUDE_BUILD_MODULES='' KERNEL_UNAME=5.3.0-28-generic IGNORE_CC_MISMATCH='' modules...(bad exit status: 2)
        ERROR (dkms apport): binary package for nvidia:  460.32.03 not found
        Error! Bad return status for module build on kernel: 5.3.0-28-generic (x86_64)
        Consult /var/lib/dkms/nvidia/ 460.32.03/build/make.log for more information.
        -> error.
        ERROR: Failed to install the kernel module through DKMS. No kernel module was installed;
        please try installing again without DKMS, or check the DKMS logs for more information.
        ERROR: Installation has failed. Please see the file '/var/log/nvidia-installer.log' for details.
        You may find suggestions on fixing installation problems in the README available on the Linux driver download page at www.nvidia.com.
        

Workaround

When installing the NVIDIA vGPU software graphics driver with DKMS enabled, use one of the following workarounds:

• Before running the driver installer, install the dkms package, then run the driver installer with the -dkms option.
• Run the driver installer with the --no-cc-version-check option.

Status

Not a bug.

Ref. #

2836271

3.12. Blue screen crash occurs or no devices are found after VM reset

Description

If a VM on Microsoft Windows Server with Hyper-V role is reset from the hypervisor host, a blue screen crash (BSOD) occurs on Windows VMs and the nvidia-smi command reports No devices were found on Linux VMs. This issue occurs only on Windows Server 2019 with Tesla T4 GPUs with SRIOV enabled, Quadro RTX 8000 passive GPUs, and Quadro RTX 6000 passive GPUs.

Workaround

Contact NVIDIA Enterprise Support for a workaround for this issue, referencing the knowledge base article Workaround for Blue Screen Crashes On Hyper-V DDA With SRIOV-Enabled GPUs. This article is available only to NVIDIA Enterprise Support personnel.

Status

Not an NVIDIA bug

Ref. #

200567935

3.13. Publisher not verified warning during Windows 7 driver installation

Description

During installation of the NVIDIA vGPU software graphics driver for Windows on Windows 7, Windows warns that it can't verify the publisher of the driver software. If Device Manager is used to install the driver, Device Manager warns that the driver is not digitally signed. If you install the driver, error 52 (CM_PROB_UNSIGNED_DRIVER) occurs.

This issue occurs because Microsoft is no longer dual signing WHQL-tested software binary files by using the SHA-1 and SHA-2 hash algorithms. Instead, WHQL-tested software binary files are signed only by using the SHA-2 hash algorithm. All NVIDIA vGPU software graphics drivers for Windows are WHQL tested.

By default, Windows 7 systems cannot recognize signatures that were created by using the SHA-2 hash algorithm. As a result, software binary files that are signed only by using the SHA-2 hash algorithm are considered unsigned.

For more information, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS on the Microsoft Windows support website.

Version

Windows 7

Workaround

If you experience this issue, install the following updates and restart the VM or host before installing the driver:

• Servicing stack update (SSU) (KB4490628)
• SHA-2 update (KB4474419)

Status

Not a bug

3.14. Frame capture while the interactive logon message is displayed returns blank screen

Description

Because of a known limitation with NvFBC, a frame capture while the interactive logon message is displayed returns a blank screen.

An NvFBC session can capture screen updates that occur after the session is created. Before the logon message appears, there is no screen update after the message is shown and, therefore, a black screen is returned instead. If the NvFBC session is created after this update has occurred, NvFBC cannot get a frame to capture.

Workaround

Press Enter or wait for the screen to update for NvFBC to capture the frame.

Status

Not a bug

Ref. #

2115733

3.15. RDS sessions do not use the GPU with some Microsoft Windows Server releases

Description

When some releases of Windows Server are used as a guest OS, Remote Desktop Services (RDS) sessions do not use the GPU. With these releases, the RDS sessions by default use the Microsoft Basic Render Driver instead of the GPU. This default setting enables 2D DirectX applications such as Microsoft Office to use software rendering, which can be more efficient than using the GPU for rendering. However, as a result, 3D applications that use DirectX are prevented from using the GPU.

Version

• Windows Server 2019
• Windows Server 2016
• Windows Server 2012

Solution

Change the local computer policy to use the hardware graphics adapter for all RDS sessions.

1. Choose Local Computer Policy > Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Remote Session Environment.

2. Set the Use the hardware default graphics adapter for all Remote Desktop Services sessions option.

3.16. A segmentation fault in DBus code causes nvidia-gridd to exit on Red Hat Enterprise Linux and CentOS

Description

On Red Hat Enterprise Linux 6.8 and 6.9, and CentOS 6.8 and 6.9, a segmentation fault in DBus code causes the nvidia-gridd service to exit.

The nvidia-gridd service uses DBus for communication with NVIDIA X Server Settings to display licensing information through the Manage License page. Disabling the GUI for licensing resolves this issue.

To prevent this issue, the GUI for licensing is disabled by default. You might encounter this issue if you have enabled the GUI for licensing and are using Red Hat Enterprise Linux 6.8 or 6.9, or CentOS 6.8 and 6.9.

Version

Red Hat Enterprise Linux 6.8 and 6.9

CentOS 6.8 and 6.9

Status

Open

Ref. #

• 200358191
• 200319854
• 1895945

3.17. No Manage License option available in NVIDIA X Server Settings by default

Description

By default, the Manage License option is not available in NVIDIA X Server Settings. This option is missing because the GUI for licensing on Linux is disabled by default to work around the issue that is described in A segmentation fault in DBus code causes nvidia-gridd to exit on Red Hat Enterprise Linux and CentOS.

Workaround

This workaround requires sudo privileges.

If you are licensing a physical GPU for vCS, you must use the configuration file /etc/nvidia/gridd.conf.

1. If NVIDIA X Server Settings is running, shut it down.

2. If the /etc/nvidia/gridd.conf file does not already exist, create it by copying the supplied template file /etc/nvidia/gridd.conf.template.

3. As root, edit the /etc/nvidia/gridd.conf file to set the EnableUI option to TRUE.

4. Start the nvidia-gridd service.

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When NVIDIA X Server Settings is restarted, the Manage License option is now available.

Status

Open

3.18. Licenses remain checked out when VMs are forcibly powered off

Description

NVIDIA vGPU software licenses remain checked out on the license server when non-persistent VMs are forcibly powered off.

The NVIDIA service running in a VM returns checked out licenses when the VM is shut down. In environments where non-persistent licensed VMs are not cleanly shut down, licenses on the license server can become exhausted. For example, this issue can occur in automated test environments where VMs are frequently changing and are not guaranteed to be cleanly shut down. The licenses from such VMs remain checked out against their MAC address for seven days before they time out and become available to other VMs.

Resolution

If VMs are routinely being powered off without clean shutdown in your environment, you can avoid this issue by shortening the license borrow period. To shorten the license borrow period, set the LicenseInterval configuration setting in your VM image. For details, refer to Virtual GPU Client Licensing User Guide.

Status

Closed

Ref. #

1694975

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