https://bugs.kde.org/show_bug.cgi?id=428137
Bug ID: 428137
Summary: Secondary monitor comes up blank
Product: plasmashell
Version: 5.20.0
Platform: Other
OS: FreeBSD
Status: REPORTED
Severity: normal
Priority: NOR
Component: Multi-screen support
Assignee: aleix...@kde.org
Reporter: gr...@kde.org
CC: plasma-b...@kde.org
Target Milestone: 1.0
This is on FreeBSD with just-updated packages, e.g.
- plasma5-kwin-5.20.0_1
- qt5-core-5.15.0_2
After logging in (from SDDM), my left-hand (secondary) monitor is blank. My
right-hand (primary) monitor shows an image.
- Applications that I had started on the secondary monitor, are placed there
"as usual" in this session: I just can't see them.
- I can move the mouse onto the second monitor.
- While the mouse is on the second monitor (showing just blackness), I can
alt-space, start application, etc. The application shows up in the task
manager, which is on the primary monitor.
- Mousing around on the second monitor changes the cursor shape as I pass over
the UI elements in applications on the second montor (e.g. the titlebar,
splitters, and links -- I know Quasselclient is **there**, I just can't see
it).
XRandR knows about the monitor:
```
Screen 0: minimum 8 x 8, current 3640 x 1920, maximum 16384 x 16384
VGA-0 disconnected (normal left inverted right x axis y axis)
DVI-D-0 connected 1080x1920+0+0 right (normal left inverted right x axis y
axis) 531mm x 299mm
1920x1080 60.00*+
1680x1050 59.95
1600x1200 60.00
1440x900 59.89
1280x1024 60.02
1280x960 60.00
1152x720 60.00
1024x768 60.00
800x600 60.32 56.25
640x480 59.94
HDMI-0 connected primary 2560x1440+1080+240 (normal left inverted right x axis
y axis) 553mm x 311mm
2560x1440 59.95*+
1920x1080 60.00 59.94 50.00 60.00 50.04
1680x1050 59.95
1440x900 59.89
1280x1440 59.91
1280x1024 75.02 60.02
1280x960 60.00
1280x720 60.00 59.94 50.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94 59.93
```
Running `kscreen-console` tells me both are known and enabled:
```
START: Requesting Config
Received config. Took 25 milliseconds
Screen:
maxSize: QSize(16384, 16384)
minSize: QSize(8, 8)
currentSize: QSize(3640, 1920)
-----------------------------------------------------
Id: 637
Name: "VGA-0"
Type: "VGA"
Connected: false
-----------------------------------------------------
Id: 638
Name: "DVI-D-0"
Type: "DVI"
Connected: true
Enabled: true
Primary: false
Rotation: 8
Pos: QPoint(0,0)
MMSize: QSize(531, 299)
FollowPreferredMode: false
Size: QSize(1920, 1080)
Scale: 1
Clones: None
Mode: "639"
Preferred Mode: "639"
Preferred modes: ("639")
Modes:
"639" "" QSize(1920, 1080) 60
"640" "" QSize(1680, 1050) 59.9543
"641" "" QSize(1600, 1200) 60
"642" "" QSize(1440, 900) 59.8874
"643" "" QSize(1280, 1024) 60.0197
"644" "" QSize(1280, 960) 60
"645" "" QSize(1152, 720) 60.0009
"646" "" QSize(1024, 768) 60.0038
"647" "" QSize(800, 600) 60.3165
"648" "" QSize(800, 600) 56.25
"649" "" QSize(640, 480) 59.9405
EDID Info:
Device ID: "xrandr-PLX2483H-1127950905734"
Name: "PLX2483H"
Vendor: ""
Serial: "1127950905734"
EISA ID: ""
Hash: "9e2f64f8ff5f7f5584f7b25d6326e394"
Width: 53
Height: 30
Gamma: 2.2
Red: QQuaternion(scalar:1, vector:(0.648438, 0.332031, 0))
Green: QQuaternion(scalar:1, vector:(0.314453, 0.612305, 0))
Blue: QQuaternion(scalar:1, vector:(0.149414, 0.0585938, 0))
White: QQuaternion(scalar:1, vector:(0.313477, 0.329102, 0))
-----------------------------------------------------
Id: 650
Name: "HDMI-0"
Type: "HDMI"
Connected: true
Enabled: true
Primary: true
Rotation: 1
Pos: QPoint(1080,240)
MMSize: QSize(553, 311)
FollowPreferredMode: false
Size: QSize(2560, 1440)
Scale: 1
Clones: None
Mode: "651"
Preferred Mode: "651"
Preferred modes: ("651")
Modes:
"639" "" QSize(1920, 1080) 60
"640" "" QSize(1680, 1050) 59.9543
"642" "" QSize(1440, 900) 59.8874
"643" "" QSize(1280, 1024) 60.0197
"644" "" QSize(1280, 960) 60
"646" "" QSize(1024, 768) 60.0038
"647" "" QSize(800, 600) 60.3165
"648" "" QSize(800, 600) 56.25
"649" "" QSize(640, 480) 59.9405
"651" "" QSize(2560, 1440) 59.9506
"652" "" QSize(1920, 1080) 59.9394
"653" "" QSize(1920, 1080) 50
"654" "" QSize(1920, 1080) 29.9984
"655" "" QSize(1920, 1080) 25.0222
"656" "" QSize(1280, 1440) 59.9126
"657" "" QSize(1280, 1024) 75.0247
"658" "" QSize(1280, 720) 60
"659" "" QSize(1280, 720) 59.9434
"660" "" QSize(1280, 720) 50
"661" "" QSize(1024, 768) 75.0286
"662" "" QSize(1024, 768) 70.0694
"663" "" QSize(800, 600) 75
"664" "" QSize(800, 600) 72.1876
"665" "" QSize(720, 576) 50
"666" "" QSize(720, 480) 59.9401
"667" "" QSize(640, 480) 75
"668" "" QSize(640, 480) 72.8088
"669" "" QSize(640, 480) 59.9286
EDID Info:
Device ID: "xrandr-Q2577W-ADQG69A000505"
Name: "Q2577W"
Vendor: ""
Serial: "ADQG69A000505"
EISA ID: ""
Hash: "e78150fac4dac08445b87ab73389c65a"
Width: 55
Height: 31
Gamma: 2.2
Red: QQuaternion(scalar:1, vector:(0.661133, 0.332031, 0))
Green: QQuaternion(scalar:1, vector:(0.301758, 0.613281, 0))
Blue: QQuaternion(scalar:1, vector:(0.149414, 0.0595703, 0))
White: QQuaternion(scalar:1, vector:(0.313477, 0.329102, 0))
```
(You can tell from the layout information that my desktop is "T" shaped, with
the T lying on its side: the secondary monitor is rotated 90 degrees and the
primary monitor has a slightly weird position so that it "connects" to the
middle 1440 pixels of the secondary monitor)
Vaguely related BRs:
- https://bugs.kde.org/show_bug.cgi?id=369450 (multiple monitors blank)
- https://bugs.kde.org/show_bug.cgi?id=372298 (multihead inoperative on second
screen)
- https://bugs.kde.org/show_bug.cgi?id=413329 (dual monitor config breaks)
I have a kscreen config file dated today, from when I logged in:
```
[
{
"enabled": true,
"id": "9e2f64f8ff5f7f5584f7b25d6326e394",
"metadata": {
"fullname": "xrandr-PLX2483H-1127950905734",
"name": "DVI-D-0"
},
"mode": {
"refresh": 60,
"size": {
"height": 1080,
"width": 1920
}
},
"pos": {
"x": 0,
"y": 0
},
"primary": false,
"rotation": 8,
"scale": 1
},
{
"enabled": true,
"id": "e78150fac4dac08445b87ab73389c65a",
"metadata": {
"fullname": "xrandr-Q2577W-ADQG69A000505",
"name": "HDMI-0"
},
"mode": {
"refresh": 59.9505500793457,
"size": {
"height": 1440,
"width": 2560
}
},
"pos": {
"x": 1080,
"y": 240
},
"primary": true,
"rotation": 1,
"scale": 1
}
]
```
The ids in that file refer to monitor information, which also exists and seems
to be correct. The file outputs/9e2f64f8ff5f7f5584f7b25d6326e394 contains this:
```
{
"id": "9e2f64f8ff5f7f5584f7b25d6326e394",
"metadata": {
"fullname": "xrandr-PLX2483H-1127950905734",
"name": "DVI-D-0"
},
"mode": {
"refresh": 60,
"size": {
"height": 1080,
"width": 1920
}
},
"rotation": 8,
"scale": 1
}
```
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