On 09/15/2016 12:56 PM, Nathan Schulte wrote:
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.
It was "xrandr --prop" with the NVIDIA driver since that's what I work
on. --verbose should also print the properties so if you're not seeing
them, then it sounds like the Intel driver isn't providing them.
$ 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
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