We have a Horizon 7.9 environment running on ESXi, 6.7.0, 16075168. We are using NVIDIA GPU cards. We recently did the ESX upgrade and recompose of the VMs. Some of the users running on Windows 7 desktops are complaining about black screen issues, mostly when they are disconnected for a long time and then reconnects. Once they hit the black screen, they are unable to resolve it without rebooting the machine.
The logs show the below:
=====================
2020-05-28T21:45:50.873+10:00> LVL:2 RC: 0 MGMT_SYS :SESSION ACTIVE
2020-05-28T21:45:50.873+10:00> LVL:2 RC: 0 MGMT_VCHAN :Connect callback 0 accepted opening chan name=RDP__CARANOC
2020-05-28T21:45:50.873+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling connect callback 1: event=OPEN cap=0x2 reject=0 flags=0x0 (RDP__CARANOC)
2020-05-28T21:45:50.873+10:00> LVL:2 RC: 0 MGMT_VCHAN :Connect callback 1 accepted opening chan name=RDP__CARANOC
2020-05-28T21:45:50.873+10:00> LVL:2 RC: 0 MGMT_VCHAN :Received OPEN_REQ request to open channel RDP__NLR3hv (peer_chan=1)
2020-05-28T21:45:50.873+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change NOT_FOUND ==> PEER_OPEN (name=RDP__NLR3hv)
2020-05-28T21:45:50.873+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling connect callback 0: event=OPEN cap=0x3 reject=15876192 flags=0x0 (RDP__NLR3hv)
2020-05-28T21:45:50.874+10:00> LVL:2 RC: 0 MGMT_VCHAN :Connect callback 0 accepted opening chan name=RDP__NLR3hv
2020-05-28T21:45:50.874+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling connect callback 1: event=OPEN cap=0x3 reject=0 flags=0x0 (RDP__NLR3hv)
2020-05-28T21:45:50.874+10:00> LVL:2 RC: 0 MGMT_VCHAN :Connect callback 1 accepted opening chan name=RDP__NLR3hv
2020-05-28T21:45:50.874+10:00> LVL:2 RC: 0 MGMT_VCHAN :Received OPEN_REQ request to open channel RDP__NLW3hv (peer_chan=2)
2020-05-28T21:45:50.874+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change NOT_FOUND ==> PEER_OPEN (name=RDP__NLW3hv)
2020-05-28T21:45:50.874+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling connect callback 0: event=OPEN cap=0x4 reject=15876192 flags=0x0 (RDP__NLW3hv)
2020-05-28T21:45:50.874+10:00> LVL:2 RC: 0 MGMT_VCHAN :Connect callback 0 accepted opening chan name=RDP__NLW3hv
2020-05-28T21:45:50.874+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling connect callback 1: event=OPEN cap=0x4 reject=0 flags=0x0 (RDP__NLW3hv)
2020-05-28T21:45:50.874+10:00> LVL:2 RC: 0 MGMT_VCHAN :Connect callback 1 accepted opening chan name=RDP__NLW3hv
2020-05-28T21:45:50.879+10:00> LVL:2 RC: 0 MGMT_HDA :mgmt_hda_apdu_fcc_encode_and_send: Encoding MGMT_HDA_AUDIO_INPUT_CTRL_BOOST_ON message...
2020-05-28T21:45:50.879+10:00> LVL:2 RC: 0 MGMT_HDA :mgmt_hda_apdu_fcc_encode_and_send: Encoding MGMT_HDA_AUDIO_INPUT_CTRL_CHANGE_MIC_VOLUME message...
2020-05-28T21:45:50.879+10:00> LVL:1 RC: 0 MGMT_HDA :soft_hda_host_send_mic_volume_apdu: mic_volume(786432)
2020-05-28T21:45:50.880+10:00> LVL:2 RC: 0 MGMT_IMG :CODEC: Processing MGMT_IMG_APDU_TYPE_QUAD_CFG_ACK. [pri = 0]
2020-05-28T21:45:50.880+10:00> LVL:2 RC: 0 MGMT_IMG :cfg_ack_process: processing [1]: MGMT_IMG_APDU_TYPE_QUAD_CFG_ACK - extended
2020-05-28T21:45:50.880+10:00> LVL:2 RC: 0 MGMT_IMG :Soft client sent no preferred display topology. Using default values for 4 display(s). Forcing topology: 0
2020-05-28T21:45:50.880+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change LOCAL_OPEN ==> OPENED (name=MultimediaRedirChannel)
2020-05-28T21:45:50.881+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=OPENED chan=0 data=0x7:0x1 (MultimediaRedirChannel)
2020-05-28T21:45:50.886+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending OPEN_REQ APDU: name=RPC#VMwareRde#17628_-001 data=0x00000000
2020-05-28T21:45:50.886+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change NOT_FOUND ==> LOCAL_OPEN (name=RPC#VMwareRde#17628_-001)
2020-05-28T21:45:50.886+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending OPEN_REQ APDU: name=RPC#RPCME#5272_-001 data=0x00000000
2020-05-28T21:45:50.886+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change NOT_FOUND ==> LOCAL_OPEN (name=RPC#RPCME#5272_-001)
2020-05-28T21:45:50.888+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending OPEN_REQ APDU: name=RPC#MKSVchan#6076_-001 data=0x00000000
2020-05-28T21:45:50.888+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change NOT_FOUND ==> LOCAL_OPEN (name=RPC#MKSVchan#6076_-001)
2020-05-28T21:45:50.889+10:00> LVL:2 RC: 0 MGMT_HDA :Speaker audio is being enabled: encoding=STEREO-48K-ADPCM (active-bw=9.00 Mbps)
2020-05-28T21:45:50.889+10:00> LVL:2 RC: 0 MGMT_HDA :AUDIO enable changed state from 0 to 1
2020-05-28T21:45:50.891+10:00> LVL:2 RC: 0 MGMT_IMG :Native resolution of the client display 0 is 2560x1440
2020-05-28T21:45:50.891+10:00> LVL:2 RC: 0 MGMT_IMG : Display 0 added using native dmt: resolution=2560x1440, origin=(0, 0), rotation=0
2020-05-28T21:45:50.891+10:00> LVL:2 RC: 0 MGMT_IMG :Native resolution of the client display 1 is 2560x1440
2020-05-28T21:45:50.892+10:00> LVL:2 RC: 0 MGMT_IMG : Display 1 added using native dmt: resolution=2560x1440, origin=(2560, 0), rotation=0
2020-05-28T21:45:50.892+10:00> LVL:2 RC: 0 MGMT_IMG :Native resolution of the client display 2 is 2560x1440
2020-05-28T21:45:50.892+10:00> LVL:2 RC: 0 MGMT_IMG : Display 2 added using native dmt: resolution=2560x1440, origin=(5120, 0), rotation=0
2020-05-28T21:45:50.892+10:00> LVL:2 RC: 0 MGMT_IMG :Native resolution of the client display 3 is 2560x1440
2020-05-28T21:45:50.892+10:00> LVL:2 RC: 0 MGMT_IMG : Display 3 added using native dmt: resolution=2560x1440, origin=(7680, 0), rotation=0
2020-05-28T21:45:50.892+10:00> LVL:2 RC: 0 MGMT_IMG :Topology: valid:1 (res supported:1, no overlap:1, num active displays:4)
2020-05-28T21:45:50.892+10:00> LVL:2 RC: 0 MGMT_IMG :process_min_max_quality_params: minimum quality is set to 40 [host setting]
2020-05-28T21:45:50.892+10:00> LVL:2 RC: 0 MGMT_IMG :process_min_max_quality_params: maximum initial quality is set to 80 [host setting]
2020-05-28T21:45:50.892+10:00> LVL:2 RC: 0 MGMT_IMG :extended img_settings: use_client_settings: 0, build_to_lossless:1, max_frame_rate: 30, smoothness_vs_sharpness: 50
2020-05-28T21:45:50.893+10:00> LVL:0 RC: 0 SERVER :Resolution Set does not support VMwareResolutionSet_SetLogLevel, skipping ...
2020-05-28T21:45:50.893+10:00> LVL:0 RC: 0 IMG_FRONTEND :Calling open display in Tera2 mode.
2020-05-28T21:45:50.893+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTap_Attach2: inRdsSession 0 sessionId 1
2020-05-28T21:45:50.893+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device VMware SVGA 3D, name \\.\DISPLAY1, deviceID PCI\VEN_15AD&DEV_0405&SUBSYS_040515AD&REV_00 flags 0x0
2020-05-28T21:45:50.893+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY2, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80005
2020-05-28T21:45:50.893+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY3, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80001
2020-05-28T21:45:50.893+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY4, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80000
2020-05-28T21:45:50.893+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY5, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80000
2020-05-28T21:45:50.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDPDD Chained DD, name \\.\DISPLAYV1, deviceID flags 0x200008
2020-05-28T21:45:50.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDP Encoder Mirror Driver, name \\.\DISPLAYV2, deviceID flags 0x200008
2020-05-28T21:45:50.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDP Reflector Display Driver, name \\.\DISPLAYV3, deviceID flags 0x200008
2020-05-28T21:45:50.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> vmwDisplays 1, nvDisplays 4, amdDisplays 0, intel 0
2020-05-28T21:45:50.899+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change LOCAL_OPEN ==> OPENED (name=RPC#VMwareRde#17628_-001)
2020-05-28T21:45:50.899+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=OPENED chan=4 data=0x0:0x0 (RPC#VMwareRde#17628_-001)
2020-05-28T21:45:50.900+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change LOCAL_OPEN ==> OPENED (name=RPC#MKSVchan#6076_-001)
2020-05-28T21:45:50.900+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=OPENED chan=6 data=0x0:0x0 (RPC#MKSVchan#6076_-001)
2020-05-28T21:45:50.904+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change LOCAL_OPEN ==> OPENED (name=RPC#RPCME#5272_-001)
2020-05-28T21:45:50.904+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=OPENED chan=5 data=0x0:0x0 (RPC#RPCME#5272_-001)
2020-05-28T21:45:50.917+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> Unable to get API interface version 1: 0
2020-05-28T21:45:50.917+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: connecting to driver: Try VMW 0 force win32 0 forceXPDMForRDS 0
2020-05-28T21:45:50.917+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: connecting to driver: NV displays available 4 NVFBC disabled 0
2020-05-28T21:45:50.917+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: profiling disabled.
2020-05-28T21:45:50.917+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device VMware SVGA 3D, name \\.\DISPLAY1, deviceID PCI\VEN_15AD&DEV_0405&SUBSYS_040515AD&REV_00 flags 0x0
2020-05-28T21:45:50.917+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY2, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80005
2020-05-28T21:45:50.918+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY3, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80001
2020-05-28T21:45:50.918+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY4, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80000
2020-05-28T21:45:50.918+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY5, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80000
2020-05-28T21:45:50.919+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDPDD Chained DD, name \\.\DISPLAYV1, deviceID flags 0x200008
2020-05-28T21:45:50.919+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDP Encoder Mirror Driver, name \\.\DISPLAYV2, deviceID flags 0x200008
2020-05-28T21:45:50.919+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDP Reflector Display Driver, name \\.\DISPLAYV3, deviceID flags 0x200008
2020-05-28T21:45:50.919+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> vmwDisplays 1, nvDisplays 4, amdDisplays 0, intel 0
2020-05-28T21:45:50.919+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: Allocating server, size=10472 bytes
2020-05-28T21:45:50.927+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending OPEN_REQ APDU: name=UNITY_UPDATE_CHA#44dc_1#PSC data=0x00000000
2020-05-28T21:45:50.927+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change NOT_FOUND ==> LOCAL_OPEN (name=UNITY_UPDATE_CHA#44dc_1#PSC)
2020-05-28T21:45:50.931+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ResolutionSetReadRegistryInt error 2.
2020-05-28T21:45:50.931+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ResolutionSetReadRegistryInt error 2.
2020-05-28T21:45:50.931+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ressetlib: Enabling 3D RDSH registry key not present
2020-05-28T21:45:50.931+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ressetlib: configure conventional VDGA
2020-05-28T21:45:50.931+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> VMwareResolutionSet_ConfigureVDGADisplays: enter
2020-05-28T21:45:50.931+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ResolutionVDGADevicesPresent - VDGA Devices present called
2020-05-28T21:45:50.932+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ressetlib: displays requested 1, VDGA devices present 4, attached VDGA displays 2
2020-05-28T21:45:50.933+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: Display update strategy: modify
2020-05-28T21:45:50.934+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> The default path is C:\Windows\Syswow64\NvFBC.dll Adapter 0, Display \\.\DISPLAY2
2020-05-28T21:45:50.937+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change LOCAL_OPEN ==> OPENED (name=UNITY_UPDATE_CHA#44dc_1#PSC)
2020-05-28T21:45:50.937+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=OPENED chan=7 data=0x0:0x0 (UNITY_UPDATE_CHA#44dc_1#PSC)
2020-05-28T21:45:51.132+10:00> LVL:1 RC: 0 SERVER :InputDevTap_GetKeyboardState @ timer: LEDs = 0xFFFFFFFF ==> 0x02
2020-05-28T21:45:51.132+10:00> LVL:1 RC: 0 SERVER :InputDevTap_GetKeyboardState @ timer: typematic [delay 0 ==> 500] [rate 0 ==> 33]
2020-05-28T21:45:51.245+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending OPEN_REQ APDU: name=VMWARE__1.25148@1 data=0xFFFFFFFF
2020-05-28T21:45:51.245+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change NOT_FOUND ==> LOCAL_OPEN (name=VMWARE__1.25148@1)
2020-05-28T21:45:51.253+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change LOCAL_OPEN ==> OPENED (name=VMWARE__1.25148@1)
2020-05-28T21:45:51.253+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=OPENED chan=8 data=0xFFFFFFFF:0x0 (VMWARE__1.25148@1)
2020-05-28T21:45:51.386+10:00> LVL:2 RC: 0 MGMT_VCHAN :closing chan 8 (type=CLOSE_GRACEFUL) ...
2020-05-28T21:45:51.386+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change OPENED ==> CLOSE_PEND (name=VMWARE__1.25148@1)
2020-05-28T21:45:51.396+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending CLOSE_REQ APDU: name=VMWARE__1.25148@1 data=0xFFFFFFFF
2020-05-28T21:45:51.414+10:00> LVL:2 RC: 0 MGMT_VCHAN :Received CLOSE_ACK APDU: chan=8 name=VMWARE__1.25148@1 reason=0xFFFFFFFF
2020-05-28T21:45:51.416+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=CLOSED chan=8 data=0x0:0xFFFFFFFF ()
2020-05-28T21:45:51.503+10:00> LVL:2 RC: 0 MGMT_KMP :>>> Rxed SET_MULTIPLE_LOCALE: num_locales=2 lang[0]=0xC09 layout[0]=0x1
2020-05-28T21:45:51.503+10:00> LVL:2 RC: 0 MGMT_KMP :>>> Rxed SET_MULTIPLE_LOCALE: lang[1]=0x409 layout[1]=0x1
2020-05-28T21:45:51.510+10:00> LVL:2 RC: 0 SERVER :Desktop switched: EVENT_SYSTEM_DESKTOPSWITCH
2020-05-28T21:45:51.511+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> VMwareResolutionSet_SyncDisplayTopology: enter
2020-05-28T21:45:51.513+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending OPEN_REQ APDU: name=VMWARE__1.25148@2 data=0xFFFFFFFE
2020-05-28T21:45:51.513+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change NOT_FOUND ==> LOCAL_OPEN (name=VMWARE__1.25148@2)
2020-05-28T21:45:51.521+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change LOCAL_OPEN ==> OPENED (name=VMWARE__1.25148@2)
2020-05-28T21:45:51.521+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=OPENED chan=9 data=0xFFFFFFFE:0x0 (VMWARE__1.25148@2)
2020-05-28T21:45:51.968+10:00> LVL:2 RC: 0 MGMT_VCHAN :closing chan 9 (type=CLOSE_GRACEFUL) ...
2020-05-28T21:45:51.968+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change OPENED ==> CLOSE_PEND (name=VMWARE__1.25148@2)
2020-05-28T21:45:51.979+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending CLOSE_REQ APDU: name=VMWARE__1.25148@2 data=0xFFFFFFFE
2020-05-28T21:45:52.101+10:00> LVL:2 RC: 0 MGMT_VCHAN :Received CLOSE_ACK APDU: chan=9 name=VMWARE__1.25148@2 reason=0xFFFFFFFE
2020-05-28T21:45:52.109+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=CLOSED chan=9 data=0x0:0xFFFFFFFE ()
2020-05-28T21:45:52.373+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ResolutionVMWDevicesActive: inRdsSession 0 sessionId 1
2020-05-28T21:45:52.374+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ressetlib: Could not find VMware devices.
2020-05-28T21:45:52.374+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ressetlib: noop sync topology
2020-05-28T21:45:52.386+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change PEER_OPEN ==> OPENED (name=RDP__CARANOC)
2020-05-28T21:45:52.386+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending OPEN_ACK APDU: name=RDP__CARANOC data=0x00000001
2020-05-28T21:45:52.386+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=OPENED chan=1 data=0x2:0x0 (RDP__CARANOC, indirect)
2020-05-28T21:45:52.410+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: NvFBC reports capture is possible. Adapter 0, Display \\.\DISPLAY2
2020-05-28T21:45:52.410+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: using NvFBC version 0, status returns 0 Adapter 0, Display \\.\DISPLAY2
2020-05-28T21:45:52.898+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: created the sys object - adapter 0, sys object 0C22ECCC Adapter 0, Display \\.\DISPLAY2
2020-05-28T21:45:53.217+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> The default path is C:\Windows\Syswow64\NvFBC.dll Adapter 0, Display \\.\DISPLAY3
2020-05-28T21:45:53.434+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: NvFBC reports capture is possible. Adapter 0, Display \\.\DISPLAY3
2020-05-28T21:45:53.434+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: using NvFBC version 0, status returns 0 Adapter 0, Display \\.\DISPLAY3
2020-05-28T21:45:53.621+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: NvFBC_Create() failed -5, adapter 1 Adapter 0, Display \\.\DISPLAY3
2020-05-28T21:45:53.622+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: UpdateDisplayWatcher ERROR
2020-05-28T21:45:53.805+10:00> LVL:2 RC: 0 MGMT_VCHAN :closing chan 1 (type=CLOSE_GRACEFUL) ...
2020-05-28T21:45:53.805+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change OPENED ==> CLOSE_PEND (name=RDP__CARANOC)
2020-05-28T21:45:53.815+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending CLOSE_REQ APDU: name=RDP__CARANOC data=0x00000001
2020-05-28T21:45:53.834+10:00> LVL:2 RC: 0 MGMT_VCHAN :Received CLOSE_ACK APDU: chan=1 name=RDP__CARANOC reason=0x00000001
2020-05-28T21:45:53.835+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=CLOSED chan=1 data=0x0:0x1 ()
2020-05-28T21:45:53.888+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: BlankHostScreen m_Displays empty
2020-05-28T21:45:53.888+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: usermode backend init failed
2020-05-28T21:45:53.888+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTap_Attach2 failed, retrying
2020-05-28T21:45:53.888+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTap_Attach2: inRdsSession 0 sessionId 1
2020-05-28T21:45:53.888+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device VMware SVGA 3D, name \\.\DISPLAY1, deviceID PCI\VEN_15AD&DEV_0405&SUBSYS_040515AD&REV_00 flags 0x0
2020-05-28T21:45:53.888+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY2, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80005
2020-05-28T21:45:53.888+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY3, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80001
2020-05-28T21:45:53.888+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY4, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80000
2020-05-28T21:45:53.888+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY5, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80000
2020-05-28T21:45:53.889+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDPDD Chained DD, name \\.\DISPLAYV1, deviceID flags 0x200008
2020-05-28T21:45:53.889+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDP Encoder Mirror Driver, name \\.\DISPLAYV2, deviceID flags 0x200008
2020-05-28T21:45:53.889+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDP Reflector Display Driver, name \\.\DISPLAYV3, deviceID flags 0x200008
2020-05-28T21:45:53.889+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> vmwDisplays 1, nvDisplays 4, amdDisplays 0, intel 0
2020-05-28T21:45:53.893+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> Unable to get API interface version 1: 0
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: connecting to driver: Try VMW 0 force win32 0 forceXPDMForRDS 0
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: connecting to driver: NV displays available 4 NVFBC disabled 0
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: profiling disabled.
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device VMware SVGA 3D, name \\.\DISPLAY1, deviceID PCI\VEN_15AD&DEV_0405&SUBSYS_040515AD&REV_00 flags 0x0
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY2, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80005
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY3, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80001
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY4, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80000
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device NVIDIA GRID T4-4Q, name \\.\DISPLAY5, deviceID PCI\VEN_10DE&DEV_1EB8&SUBSYS_130E10DE&REV_A1 flags 0x80000
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDPDD Chained DD, name \\.\DISPLAYV1, deviceID flags 0x200008
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDP Encoder Mirror Driver, name \\.\DISPLAYV2, deviceID flags 0x200008
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> SVGADevTapCountDisplays: new device RDP Reflector Display Driver, name \\.\DISPLAYV3, deviceID flags 0x200008
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> vmwDisplays 1, nvDisplays 4, amdDisplays 0, intel 0
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: Allocating server, size=10472 bytes
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ResolutionSetReadRegistryInt error 2.
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ResolutionSetReadRegistryInt error 2.
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ressetlib: Enabling 3D RDSH registry key not present
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ressetlib: configure conventional VDGA
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> VMwareResolutionSet_ConfigureVDGADisplays: enter
2020-05-28T21:45:53.894+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ResolutionVDGADevicesPresent - VDGA Devices present called
2020-05-28T21:45:53.895+10:00> LVL:0 RC: 0 EXTERN :set_resolution ==> ressetlib: displays requested 1, VDGA devices present 4, attached VDGA displays 2
2020-05-28T21:45:53.896+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: Display update strategy: modify
2020-05-28T21:45:53.896+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> The default path is C:\Windows\Syswow64\NvFBC.dll Adapter 0, Display \\.\DISPLAY2
2020-05-28T21:45:53.913+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: NvFBC reports capture is possible. Adapter 0, Display \\.\DISPLAY2
2020-05-28T21:45:53.913+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: using NvFBC version 0, status returns 0 Adapter 0, Display \\.\DISPLAY2
2020-05-28T21:45:53.982+10:00> LVL:2 RC: 0 MGMT_VCHAN :Sending OPEN_REQ APDU: name=RDP__CARANOC data=0x00000002
2020-05-28T21:45:53.982+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change NOT_FOUND ==> LOCAL_OPEN (name=RDP__CARANOC)
2020-05-28T21:45:54.077+10:00> LVL:2 RC: 0 MGMT_VCHAN :State Change LOCAL_OPEN ==> OPENED (name=RDP__CARANOC)
2020-05-28T21:45:54.077+10:00> LVL:2 RC: 0 MGMT_VCHAN :Calling chan callback: event=OPENED chan=10 data=0x2:0x0 (RDP__CARANOC)
2020-05-28T21:45:54.211+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: created the sys object - adapter 0, sys object 0DB948E4 Adapter 0, Display \\.\DISPLAY2
2020-05-28T21:45:54.309+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> The default path is C:\Windows\Syswow64\NvFBC.dll Adapter 0, Display \\.\DISPLAY3
2020-05-28T21:45:54.318+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: NvFBC reports capture is possible. Adapter 0, Display \\.\DISPLAY3
2020-05-28T21:45:54.318+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: using NvFBC version 0, status returns 0 Adapter 0, Display \\.\DISPLAY3
2020-05-28T21:45:54.391+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: NvFBC_Create() failed -1, adapter 1 Adapter 0, Display \\.\DISPLAY3
2020-05-28T21:45:54.391+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: UpdateDisplayWatcher ERROR
2020-05-28T21:45:54.668+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: BlankHostScreen m_Displays empty
2020-05-28T21:45:54.668+10:00> LVL:0 RC: 0 EXTERN :svga_devtap ==> svgadevtap: usermode backend init failed
2020-05-28T21:45:54.668+10:00> LVL:0 RC:-500 IMG_FRONTEND :cSW_HOST_FRONTEND::open_display - Error attaching to SVGADevTap, error 1: Failed
2020-05-28T21:45:54.668+10:00> LVL:0 RC:-500 MGMT_IMG :cSW_HOST_IPC::enable_frontend failed. 10 retries remaining. Trying again...
==============
Attaching full logs.
I haven't tried with BLAST yet. We installed the VMware Tools and Horizon agent in the correct order during the maintenance/recompose.
Any help is appreciated.