RandR 1.5 Monitors: "No monitor named '...'"

[Nathan Schulte]

Thanks for the reply, Aaron.  I assume then I've stumbled upon an issue 
w/ this version of xrandr / X's RandR 1.5 impl?

On 09/14/2016 11:16 AM, Aaron Plattner wrote:
> There is supposed to be a "ConnectorNumber" property that you can use to
> correlate these RandR outputs with physical connectors.
>
> https://cgit.freedesktop.org/xorg/proto/randrproto/tree/randrproto.txt?id=cf3272717e08325f69bdbb759ab35cb4d1839fb7#n1931
>
> E.g., on my system, these two are halves of the same mini-DisplayPort
> connector:
>
> DP-4 disconnected (normal left inverted right x axis y axis)
> 	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: DisplayPort
> 		supported: DisplayPort
> 	ConnectorType: DisplayPort
> 	ConnectorNumber: 1
> 	_ConnectorLocation: 1

Aaron, what did you use to produce that output?  I see something similar 
w/ the output of xrandr (note the "Clones" and "CRTC" and "CRTCs" 
properties).  If I understand correctly, all of these outputs are from 
the Intel Haswell HD 4600, and none from the AMD Radeon.

> $ xrandr --version
> xrandr program version       1.5.0
> Server reports RandR version 1.5

> $ xrandr --verbose
> Screen 0: minimum 8 x 8, current 3600 x 3840, maximum 32767 x 32767
> eDP1 connected (normal left inverted right x axis y axis)
> 	Identifier: 0x79
> 	Timestamp:  56437148
> 	Subpixel:   unknown
> 	Clones:
> 	CRTCs:      0 1 2
> --- snip ---
> DP1 disconnected (normal left inverted right x axis y axis)
> 	Identifier: 0x7a
> 	Timestamp:  56437148
> 	Subpixel:   unknown
> 	Clones:     HDMI1
> 	CRTCs:      0 1 2
> --- snip ---
> DP2 connected primary 1200x3840+0+0 (0x13b) left (normal left inverted right x axis y axis) 580mm x 360mm
> 	Identifier: 0x7b
> 	Timestamp:  56437148
> 	Subpixel:   unknown
> 	Gamma:      1.0:1.0:1.0
> 	Brightness: 1.0
> 	Clones:     HDMI3
> 	CRTC:       0
> 	CRTCs:      0 1 2
> --- snip ---
> HDMI1 connected 1200x1920+2400+0 (0x13a) left (normal left inverted right x axis y axis) 580mm x 360mm
> 	Identifier: 0x7c
> 	Timestamp:  56437148
> 	Subpixel:   unknown
> 	Gamma:      1.0:1.0:1.0
> 	Brightness: 1.0
> 	Clones:     DP1
> 	CRTC:       1
> 	CRTCs:      0 1 2
> --- snip ---
> HDMI2 connected 1200x1920+1200+0 (0x13a) left (normal left inverted right x axis y axis) 580mm x 360mm
> 	Identifier: 0x7d
> 	Timestamp:  56437148
> 	Subpixel:   unknown
> 	Gamma:      1.0:1.0:1.0
> 	Brightness: 1.0
> 	Clones:
> 	CRTC:       2
> 	CRTCs:      0 1 2
> --- snip ---
> HDMI3 disconnected (normal left inverted right x axis y axis)
> 	Identifier: 0x7e
> 	Timestamp:  56437148
> 	Subpixel:   unknown
> 	Clones:     DP2
> 	CRTCs:      0 1 2
> --- snip ---
> VIRTUAL1 disconnected (normal left inverted right x axis y axis)
> 	Identifier: 0x7f
> 	Timestamp:  56437148
> 	Subpixel:   no subpixels
> 	Clones:
> 	CRTCs:      3
> --- snip ---

I'm still not sure how or why I would use this VIRTUAL1 output; I can't 
help but wonder if it has to do w/ DRI Prime (hybrid graphics), but I 
guess it's not and is [necessary, and subsequently] used internally in 
the driver stack somehow else.

--
Nate