https://bugs.kde.org/show_bug.cgi?id=432707
Bug ID: 432707
Summary: [Wayland] KScreen does not detect external displays
such as DisplayPort on laptops
Product: KScreen
Version: git
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: libkscreen
Assignee: kscreen-bugs-n...@kde.org
Reporter: shawn.st...@rogers.com
Target Milestone: ---
SUMMARY
I have two laptops, one is a Dell Precision M6800, with an integrated GPU and
dedicated GPU:
Laptop #1
=========
Model: Dell Precision M6800
Integrated GPU: Intel HD Graphics 4600 (HSW GT2)
Dedicated GPU: AMD FirePro M6100 (AMD Radeon HD 8950)
Xrandr info - Xorg
------------------
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 16384 x 16384
DisplayPort-1 connected primary 2560x1440+0+0 (normal left inverted right x
axis y axis) 597mm x 336mm
2560x1440 144.00*+ 120.00 59.95
1920x1080 239.76 143.98 120.00 119.88 60.00 50.00 59.94
1680x1050 59.95
1600x900 60.00
1280x1024 75.02 60.02
1440x900 59.89
1280x800 59.81
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
DisplayPort-3 disconnected (normal left inverted right x axis y axis)
eDP-1-1 connected (normal left inverted right x axis y axis)
1920x1080 60.01 + 60.01 59.97 59.96 59.93
1680x1050 59.95 59.88
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1280x800 59.99 59.97 59.81 59.91
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
700x525 59.98
800x450 59.95 59.82
640x512 60.02
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
640x400 59.88 59.98
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
VGA-1-1 disconnected (normal left inverted right x axis y axis)
DP-1-1 disconnected (normal left inverted right x axis y axis)
HDMI-1-1 disconnected (normal left inverted right x axis y axis)
1680x1050 (0x4c) 146.250MHz -HSync +VSync
h: width 1680 start 1784 end 1960 total 2240 skew 0 clock 65.29KHz
v: height 1050 start 1053 end 1059 total 1089 clock 59.95Hz
1280x1024 (0x53) 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 (0x5d) 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
1024x768 (0x64) 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 (0x73) 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
800x600 (0x74) 36.000MHz +HSync +VSync
h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz
v: height 600 start 601 end 603 total 625 clock 56.25Hz
640x480 (0x80) 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
Laptop #2:
==========
Model: ThinkPad W500 (4058CTO)
Integrated GPU: disabled in BIOS
Dedicated GPU: Mobility Radeon HD 3650 (RV635)
xrandr info - Xorg
------------------
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192
DVI-0 disconnected (normal left inverted right x axis y axis)
LVDS connected (normal left inverted right x axis y axis)
1920x1200 60.00 +
1920x1080 60.00
1600x1200 60.00 59.95
1680x1050 60.00
1400x1050 60.00
1280x1024 59.95 60.02
1440x900 59.99
1280x960 59.99
1280x854 59.95
1280x800 59.96
1280x720 59.97
1152x768 59.95
1024x768 60.00 59.95
800x600 60.32 59.96
848x480 59.94
720x480 59.94
640x480 59.94 59.94
DisplayPort-0 connected primary 2560x1440+0+0 (normal left inverted right x
axis y axis) 0mm x 0mm
1024x768 60.00
800x600 60.32 56.25
848x480 60.00
640x480 59.94
VGA-0 disconnected (normal left inverted right x axis y axis)
2560x1440 (0x6e4) 311.862MHz -HSync +VSync
h: width 2560 start 2744 end 3024 total 3488 skew 0 clock 89.41KHz
v: height 1440 start 1441 end 1444 total 1490 clock 60.01Hz
STEPS TO REPRODUCE
1. Try to run Plasma Wayland
2. External Display does not turn on
OBSERVED RESULT
External Display does not turn on
EXPECTED RESULT
External Display turns on
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.20.90
(available in About System)
KDE Plasma Version: 5.20.90
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
It also seems interesting that the internal display sometimes does not show any
widgets from Plasma only the Workspace can be popped open, nothing else is
available...
I wonder if KScreen/Plasma is getting confused with Xorg config settings vs any
Wayland setting?
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