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GenHeDi
Tux's lil' helper
Joined: 02 Jan 2016
Posts: 132
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 Posted: Sat Aug 17, 2019 2:24 pm Post subject: monitor not properly recognized after docking |
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Hello,
I recently started using a docking station for my laptop. My laptop runs Gentoo, Ubuntu 18.04 LTS and Win 10.
As soon as I use my laptop in combination with the docking station, the connected monitor is not recognized and set up properly by Gentoo.
In the terminal environment (so no KDE / Plasma active) the lower part (approx. 5 cm) is not used. If I start KDE / Plasma from the command line, it will take much longer (compared to the undocked situation) before KDE / Plasma is started. After it is started, it shows my desktop (wallpaper, mouse, icons) but the taskbar is not visible.
Using Ubuntu it works better, KDE / Plasma starts up equal fast and windows environment is displayed and adjusted fine (taskbar, icons, background, mouse). Unfortunately, in the terminal environment (ctrl-alt F5, so no KDE / Plasma active) also the lower part (approx. 5 cm) is also not used.
In the docked Ubuntu situation, xrandr shows:
| Code: | xrandr
Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 8192 x 8192
eDP-1 connected (normal left inverted right x axis y axis)
1920x1080 60.10 + 60.01 59.97 59.96 59.93 40.06
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1440x900 59.89
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 60.00
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
800x512 60.17
700x525 59.98
800x450 59.95 59.82
640x512 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 60.06
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
HDMI-1 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
1920x1200 59.95*+
1920x1080 60.00
1600x1200 60.00
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 74.98 59.90
1280x720 60.00
1024x768 75.03 60.00
800x600 75.00 60.32
640x480 75.00 72.81 66.67 59.94
720x400 70.08
HDMI-2 disconnected (normal left inverted right x axis y axis)
HDMI-3 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis) |
In the undocked Ubuntu situation, xrandr shows:
| Code: | xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
1920x1080 60.10*+ 60.01 59.97 59.96 59.93 40.06
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1440x900 59.89
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 60.00
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
800x512 60.17
700x525 59.98
800x450 59.95 59.82
640x512 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 60.06
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
HDMI-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)
HDMI-3 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis) |
I will also try to post the Gentoo xrandr output.
Thanks in advance for thinking along and possibly solving the problem.
Regards,
GenHeDi
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GenHeDi
Tux's lil' helper
Joined: 02 Jan 2016
Posts: 132
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| Posted: Sat Aug 17, 2019 2:42 pm Post subject: |
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Hello again,
I managed to start a xterm window in the docked Gentoo situation.
In the docked Gentoo situation, xrandr shows:
| Code: | xrandr
Screen 0: minimum 8 x 8, current 1920 x 1200, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
1920x1080 60.10*+ 40.06
1680x1050 59.88
1400x1050 59.98
1600x900 60.00 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 520mm x 320mm
1920x1200 59.95*+
1920x1080 60.00
1600x1200 60.00
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 74.98 59.90
1280x720 60.00
1024x768 75.03 60.00
800x600 75.00 60.32
640x480 75.00 72.81 66.67 59.94
720x400 70.08
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis) |
I will post this, because I do not know what will happen during a live undocking procedure.
Regards,
GenHeDi
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GenHeDi
Tux's lil' helper
Joined: 02 Jan 2016
Posts: 132
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| Posted: Sat Aug 17, 2019 2:45 pm Post subject: |
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Hello,
I am able to do a live undocking procedure and my desktop recovers to normal size and my taskbar is also present again  .
In the undocked Gentoo situation, xrandr shows:
| Code: | xrandr
Screen 0: minimum 8 x 8, current 1920 x 1200, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
1920x1080 60.10*+ 40.06
1680x1050 59.88
1400x1050 59.98
1600x900 60.00 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected 1920x1200+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
1920x1200 (0x4b) 154.000MHz +HSync -VSync
h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 74.04KHz
v: height 1200 start 1203 end 1209 total 1235 clock 59.95Hz
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Regards,
GenHeDi
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GenHeDi
Tux's lil' helper
Joined: 02 Jan 2016
Posts: 132
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| Posted: Sat Aug 17, 2019 2:53 pm Post subject: |
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Hello again,
After a reboot of my Gentoo system, following happens.
In the undocked Gentoo situation (fresh start), xrandr shows:
| Code: | xrandr
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
1920x1080 60.10*+ 40.06
1680x1050 59.88
1400x1050 59.98
1600x900 60.00 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis) |
Regards,
GenHeDi
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GenHeDi
Tux's lil' helper
Joined: 02 Jan 2016
Posts: 132
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| Posted: Wed Aug 21, 2019 4:01 pm Post subject: |
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If this is a case of RTFM, can someone tell me which FM to start reading first?
That would also help a lot.
Thanks in advance.
GenHeDi
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forrestfunk81
Guru
Joined: 07 Feb 2006
Posts: 565
Location: münchen.de
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| Posted: Mon Sep 02, 2019 10:04 pm Post subject: |
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Hi GenHeDi,
the monitor resolutions of your laptop screen and external monitor differ (1920x1080 vs 1920x1200). Have you tried setting both to 1920x1080 and does this problems also occur then? Also in the Gentoo xrandr output after undocking you can see a VIRTUAL1 which does not match your laptop resolution. You can change this by using the xrandr cli.
Have you had a look at your KDE System Settings -> Display and Monitor? It should show how the monitors are aligned and I guess if you move them around you could get your taskbar back. Also which KDE and Plasma versions are you using? Which display adapter and driver versions?
I have a multi monitor hidpi setup with docking station @work and it took some time to get it running well. But sometimes I still have issues after docking or undocking (especially if the laptop is suspended along the way). In such situations I use a script aligning the monitors with xrandr commands.
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GenHeDi
Tux's lil' helper
Joined: 02 Jan 2016
Posts: 132
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| Posted: Fri Sep 06, 2019 6:23 pm Post subject: |
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Hello forrestfunk81,
Thank you for responding.I am new in using xrandr. Can you provide a bit more information in using the xrandr cli?
Can you also explain how to enter KDE System Settings -> Display and Monitor when I'm not able to see or reach the taskbar?
Thanks in advance.
GenHeDi
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forrestfunk81
Guru
Joined: 07 Feb 2006
Posts: 565
Location: münchen.de
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| Posted: Sun Sep 15, 2019 7:54 pm Post subject: |
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In KDE you can open applications by using the Plasma Search (default keyboard shortcuts ALT + space).
With xrandr you can try something like this
| Code: |
xrandr --auto --output eDP1 --mode 1920x1080
xrandr --auto --output HDMI1 --mode 1920x1080 --right-of eDP1
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For more information see 'man xrandr'
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charles17
Advocate
Joined: 02 Mar 2008
Posts: 3664
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| Posted: Mon Sep 16, 2019 7:36 am Post subject: |
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| GenHeDi wrote: | Hello forrestfunk81,
Thank you for responding.I am new in using xrandr. Can you provide a bit more information in using the xrandr cli? |
There are graphical front ends to xrandr like lxde-base/lxrandr. |
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GenHeDi
Tux's lil' helper
Joined: 02 Jan 2016
Posts: 132
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| Posted: Thu Sep 19, 2019 7:32 pm Post subject: |
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Hello charles17 / forrestfunk81
Thanks for helping, I will give it a try.
Regards,
GenHeDi
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GenHeDi
Tux's lil' helper
Joined: 02 Jan 2016
Posts: 132
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| Posted: Sat Jan 18, 2020 12:18 pm Post subject: |
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Hello,
Sorry for (very) late response, I was stuck in all kinds of other Gentoo challenges 
After executing following command:
| Code: | | # xrandr --auto --output HDMI1 --mode 1920x1080 |
The taskbar of KDE appeared. But my monitor complained that I should use a resolution of 1920x1200.
Output of xrandr is as follows:
| Code: | # xrandr
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
1920x1080 60.10*+ 40.06
1680x1050 59.88
1400x1050 59.98
1600x900 60.00 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 520mm x 320mm
1920x1200 59.95 +
1920x1080 60.00*
1600x1200 60.00
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 74.98 59.90
1280x720 60.00
1024x768 75.03 60.00
800x600 75.00 60.32
640x480 75.00 72.81 66.67 59.94
720x400 70.08
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
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I tried to change the display setting of KDE, but it seems that I am missing an icon. "KDE System Settings -> Display and Monitor" only shows an Compositor icon and an Night Color icon.
A minimal KDE environment is installed on my Gentoo system, so probably I am missing some apps.
What could be missing? Because Google is not helping a lot me at this moment.
KDE version 5.17.4
KDE Frameworks 5.64.0
Qt 5.13.2
Thanks in advance.
GenHeDi
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GenHeDi
Tux's lil' helper
Joined: 02 Jan 2016
Posts: 132
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| Posted: Mon Jan 20, 2020 6:40 pm Post subject: |
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Hello,
I managed to get a step ahead. Apparently kscreen was not installed, so I installed it.
Now "KDE System Settings -> Display and Monitor" shows a third icon called "Display and Monitor". It it possible to select
this icon and my two screen are shown and also recognized.
The strange part of it is that xrandr puts resolution to a resolution of 1920x1200 and KDE uses 1920x1200.
In the Display and monitor screen I am able to toggle between the two screens. Switching back and forth has no effect on the actual screen appearance.
The second strange part of it is that the selection buttons below (help, standard, reset and apply) are light gray and not functional.
So, I am not able to apply my changes or monitor selection.
Does anyone know what is still missing?
Kind regards
GenHeDi
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GenHeDi
Tux's lil' helper
Joined: 02 Jan 2016
Posts: 132
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| Posted: Wed Apr 29, 2020 5:34 pm Post subject: |
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SOLVED IT!!!!
I tried several settings with xrandr, determined several configurations with cvt. Unfortunately, nothing helped and my taskbar doesn't show up.
In the meantime I got the feeling that something was missing in my Plasma configuration. This is due to the fact that I installed the kde-plasma/plasma-desktop meta package.
This warning finally convinced me:
| Quote: | Warning
Please note that only installing kde-plasma/plasma-desktop will be missing important packages such as kde-plasma/powerdevil (power management, suspend and hibernate options), kde-plasma/systemsettings and many more, do not expect support in this case. |
So, I installed the kde-plasma/plasma-meta package. After trying some settings in the system settings menu; pop, there was my taskbar.
SUCCESS AT LAST!!!
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