# Need to enable VR HMD as a monitor, but xrandr does not detect it with proprietary drivers yet nvidia-xconfig does

**URL:** <https://forums.developer.nvidia.com/t/need-to-enable-vr-hmd-as-a-monitor-but-xrandr-does-not-detect-it-with-proprietary-drivers-yet-nvidia-xconfig-does/165520>\
**Category:** Linux\
**Created:** [January 8, 2021, 7:10pm UTC](https://forums.developer.nvidia.com/t/need-to-enable-vr-hmd-as-a-monitor-but-xrandr-does-not-detect-it-with-proprietary-drivers-yet-nvidia-xconfig-does/165520 "2021-01-08T19:10:12Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![BrannigansLaw](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@BrannigansLaw](https://forums.developer.nvidia.com/u/BrannigansLaw)\
**Post date:** [January 8, 2021, 7:10pm UTC](https://forums.developer.nvidia.com/t/need-to-enable-vr-hmd-as-a-monitor-but-xrandr-does-not-detect-it-with-proprietary-drivers-yet-nvidia-xconfig-does/165520/1 "2021-01-08T19:10:12Z")

</div>

Hi, I’m hoping someone can help me.

I need to enable a connected HMD (Vive or Index) as a monitor. When the device is connected with open source nouveau drivers, `xrandr` shows it as disconnected and `non-desktop 1` which is the expected behavior.

However if I use proprietary drivers, `xrandr` does not show anything except my primary monitor. But, `nvidia-xconfig` still sees the HMD.

Thanks for your help in advacne.

## Some more details:

- GTX 1060
- Ubuntu 20.04
- Tried default nouveau, default proprietary, as well as graphics-ppa 440, 455, and the new 460 proprietary.

### proprietary:

- `xrandr` does not detect the HMD (output at the end)
- SteamVR works fine
- Monado works fine
- `nvidia-xconfig` detects the HMD (output at the end)

### nouveau

- `xrandr` detects the display as `non-desktop` which I can then enable with `--set non-desktop 0`, which is what I’d like to be able to do with Nvidia’s drivers.

### Nvidia Proprietary Driver:

```auto
$ nvidia-xconfig --query-gpu-info
Number of GPUs: 1
GPU #0:
  Name : GeForce GTX 1060 6GB
  UUID : GPU-24bd7b56-f200-00aa-5e64-939807a69dcc
  PCI BusID : PCI:1:0:0
  Number of Display Devices: 2
  Display Device 0 (TV-1):
      EDID Name : HTC Corporation HTC-VIVE
      Minimum HorizSync : 1.000 kHz
      Maximum HorizSync : 255.000 kHz
      Minimum VertRefresh : 20 Hz
      Maximum VertRefresh : 120 Hz
      Maximum PixelClock : 297.000 MHz
      Maximum Width : 2160 pixels
      Maximum Height : 1200 pixels
      Preferred Width : 2160 pixels
      Preferred Height : 1200 pixels
      Preferred VertRefresh : 90 Hz
  Display Device 1 (TV-2):
      EDID Name : LG Electronics LG Ultra HD
      Minimum HorizSync : 30.000 kHz
      Maximum HorizSync : 135.000 kHz
      Minimum VertRefresh : 56 Hz
      Maximum VertRefresh : 61 Hz
      Maximum PixelClock : 560.000 MHz
      Maximum Width : 3840 pixels
      Maximum Height : 2160 pixels
      Preferred Width : 3840 pixels
      Preferred Height : 2160 pixels
      Preferred VertRefresh : 60 Hz
      Physical Width : 600 mm
      Physical Height : 340 mm

```

```auto
$ xrandr --verbose
Screen 0: minimum 8 x 8, current 3840 x 2160, maximum 32767 x 32767
DVI-D-0 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x1bd
	Timestamp: 28320
	Subpixel: unknown
	Clones:    
	CRTCs: 0 1 2 3
	Transform: 1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
		0 1 
	CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
	BorderDimensions: 4 
		supported: 4
	Border: 0 0 0 0 
		range: (0, 65535)
	SignalFormat: TMDS 
		supported: TMDS
	ConnectorType: DVI-D 
	ConnectorNumber: 0 
	_ConnectorLocation: 0 
	non-desktop: 0 
		supported: 0, 1
HDMI-0 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x1be
	Timestamp: 28320
	Subpixel: unknown
	Clones:    
	CRTCs: 0 1 2 3
	Transform: 1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
		0 1 
	CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
	BorderDimensions: 4 
		supported: 4
	Border: 0 0 0 0 
		range: (0, 65535)
	SignalFormat: TMDS 
		supported: TMDS
	ConnectorType: HDMI 
	ConnectorNumber: 3 
	_ConnectorLocation: 3 
	non-desktop: 0 
		supported: 0, 1
DP-0 connected primary 3840x2160+0+0 (0x1c0) normal (normal left inverted right x axis y axis) 600mm x 340mm
	Identifier: 0x1bf
	Timestamp: 28320
	Subpixel: unknown
	Gamma: 1.0:1.0:1.0
	Brightness: 1.0
	Clones:    
	CRTC: 0
	CRTCs: 0 1 2 3
	Transform: 1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	_MUTTER_PRESENTATION_OUTPUT: 0 
	CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
		0 1 
	CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
	EDID: 
		00ffffffffffff001e6d095b46a30700
		041b0104b53c22789e3035a7554ea326
		0f50542108007140818081c0a9c0d1c0
		8100010101014dd000a0f0703e803020
		650c58542100001a286800a0f0703e80
		0890650c58542100001a000000fd0038
		3d1e8738000a202020202020000000fc
		004c4720556c7472612048440a2001ac
		02031171449004030123090707830100
		00023a801871382d40582c4500585421
		00001e565e00a0a0a029503020350058
		542100001a0000000000000000000000
		00000000000000000000000000000000
		00000000000000000000000000000000
		00000000000000000000000000000000
		000000000000000000000000000000c8
	BorderDimensions: 4 
		supported: 4
	Border: 0 0 0 0 
		range: (0, 65535)
	SignalFormat: DisplayPort 
		supported: DisplayPort
	ConnectorType: DisplayPort 
	ConnectorNumber: 4 
	_ConnectorLocation: 4 
	non-desktop: 0 
		supported: 0, 1
  3840x2160 (0x1c0) 533.250MHz +HSync -VSync *current +preferred
        h: width 3840 start 3888 end 3920 total 4000 skew 0 clock 133.31KHz
        v: height 2160 start 2214 end 2219 total 2222 clock 60.00Hz
  3840x2160 (0x1c1) 266.640MHz +HSync -VSync
        h: width 3840 start 3848 end 3992 total 4000 skew 0 clock 66.66KHz
        v: height 2160 start 2214 end 2219 total 2222 clock 30.00Hz
  2560x1440 (0x1c2) 241.500MHz +HSync -VSync
        h: width 2560 start 2608 end 2640 total 2720 skew 0 clock 88.79KHz
        v: height 1440 start 1443 end 1448 total 1481 clock 59.95Hz
  1920x1080 (0x1c3) 148.500MHz +HSync +VSync
        h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.50KHz
        v: height 1080 start 1084 end 1089 total 1125 clock 60.00Hz
  1920x1080 (0x1c4) 148.350MHz +HSync +VSync
        h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.43KHz
        v: height 1080 start 1084 end 1089 total 1125 clock 59.94Hz
  1600x900 (0x1c5) 108.000MHz +HSync +VSync
        h: width 1600 start 1624 end 1704 total 1800 skew 0 clock 60.00KHz
        v: height 900 start 901 end 904 total 1000 clock 60.00Hz
  1280x1024 (0x1c6) 108.000MHz +HSync +VSync
        h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz
        v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz
  1280x800 (0x1c7) 83.500MHz -HSync +VSync
        h: width 1280 start 1352 end 1480 total 1680 skew 0 clock 49.70KHz
        v: height 800 start 803 end 809 total 831 clock 59.81Hz
  1280x720 (0x1c8) 74.250MHz +HSync +VSync
        h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 45.00KHz
        v: height 720 start 725 end 730 total 750 clock 60.00Hz
  1280x720 (0x1c9) 74.180MHz +HSync +VSync
        h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 44.96KHz
        v: height 720 start 725 end 730 total 750 clock 59.94Hz
  1152x864 (0x1ca) 81.750MHz -HSync +VSync
        h: width 1152 start 1216 end 1336 total 1520 skew 0 clock 53.78KHz
        v: height 864 start 867 end 871 total 897 clock 59.96Hz
  1024x768 (0x1cb) 65.000MHz -HSync -VSync
        h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz
        v: height 768 start 771 end 777 total 806 clock 60.00Hz
  800x600 (0x1cc) 40.000MHz +HSync +VSync
        h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz
        v: height 600 start 601 end 605 total 628 clock 60.32Hz
  720x480 (0x1cd) 27.000MHz -HSync -VSync
        h: width 720 start 736 end 798 total 858 skew 0 clock 31.47KHz
        v: height 480 start 489 end 495 total 525 clock 59.94Hz
  640x480 (0x1ce) 25.175MHz -HSync -VSync
        h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz
        v: height 480 start 490 end 492 total 525 clock 59.94Hz
  640x480 (0x1cf) 25.170MHz -HSync -VSync
        h: width 640 start 656 end 752 total 800 skew 0 clock 31.46KHz
        v: height 480 start 490 end 492 total 525 clock 59.93Hz
DP-1 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x1d0
	Timestamp: 28320
	Subpixel: unknown
	Clones:    
	CRTCs: 0 1 2 3
	Transform: 1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
		0 1 
	CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
	BorderDimensions: 4 
		supported: 4
	Border: 0 0 0 0 
		range: (0, 65535)
	SignalFormat: TMDS 
		supported: TMDS
	ConnectorType: DisplayPort 
	ConnectorNumber: 4 
	_ConnectorLocation: 4 
	non-desktop: 0 
		supported: 0, 1
DVI-D-1 disconnected (normal left inverted right x axis y axis)
	Identifier: 0x1d1
	Timestamp: 28320
	Subpixel: unknown
	Clones:    
	CRTCs: 0 1 2 3
	Transform: 1.000000 0.000000 0.000000
	            0.000000 1.000000 0.000000
	            0.000000 0.000000 1.000000
	           filter: 
	CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 
		0 1 
	CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0 
	BorderDimensions: 4 
		supported: 4
	Border: 0 0 0 0 
		range: (0, 65535)
	SignalFormat: TMDS 
		supported: TMDS
	ConnectorType: DVI-D 
	ConnectorNumber: 2 
	_ConnectorLocation: 2 
	non-desktop: 0 
		supported: 0, 1

```

---

<div class="post-metadata">

**Author:** ![BrannigansLaw](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@BrannigansLaw](https://forums.developer.nvidia.com/u/BrannigansLaw)\
**Post date:** [January 8, 2021, 10:16pm UTC](https://forums.developer.nvidia.com/t/need-to-enable-vr-hmd-as-a-monitor-but-xrandr-does-not-detect-it-with-proprietary-drivers-yet-nvidia-xconfig-does/165520/2 "2021-01-08T22:16:29Z")

</div>

If anyone comes across this later you can solve this in `xorg.conf` (you may need to generate the file) by setting:

```auto
Option "AllowHMD" "yes"

```

[https://download.nvidia.com/XFree86/Linux-x86\_64/384.98/README/xconfigoptions.html](https://download.nvidia.com/XFree86/Linux-x86_64/384.98/README/xconfigoptions.html)
