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Hello,
I just bought this new lenovo T480 and a orico xc-306 docking station, I have a HP E231 monitor connected via the laptops HDMI and an Acer K222HQL on the docking stations HDMI port,
which is then connected to my laptop via the thunderbolt 3 port.
The thing is.... EVERY time I reboot or shutdown, then turn it all on again, the system starts normally but, I have to unplug and plug my docking station so the mouse and keyboard can get recognized ,
plus the main problem here is that I loose the displays setup...
it should alway look like this:
I tried many things, and one that I saw and found pretty curious was the result of the command:
$ kcmshell5 xserver
which gave me this:
as you can see it shows - on the available screens tab - only screen#0
Shouldn't it show screen 1, 2 and 3 ?
example: 1 laptop, 2 the acer monitor and 3 the hp monitor
ps. my laptop doesn't have nvidia or amd gpu, its all intels
Last edited by noobr (2019-09-11 21:23:24)
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Some ideas, maybe something helps.
First rule out it is a security problem and disable that feature in your UEFI (should be roughly at Advanced/Security -> Thunderbolt) and allow all devices to connect.
Maybe it is a missing module during boot. Find the driver used by the dock by running
lsusb -v
And add it to your /etc/mkinitcpio.conf, rebuild the initram.
Please give us dmesg output:
# 1) Have dock connected
# 2) reboot
# 3) Device should not work -> Remove
# 4) replug device
dmesg
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Some ideas, maybe something helps.
First rule out it is a security problem and disable that feature in your UEFI (should be roughly at Advanced/Security -> Thunderbolt) and allow all devices to connect.
Maybe it is a missing module during boot. Find the driver used by the dock by runninglsusb -v
And add it to your /etc/mkinitcpio.conf, rebuild the initram.
Please give us dmesg output:
# 1) Have dock connected # 2) reboot # 3) Device should not work -> Remove # 4) replug device dmesg
Thank you, I've just found a solution then came here and saw your help, here is what I did:
this helped me a lot: https://blog.victormendonca.com/2018/06 … e-screens/
$ sudo pacman -S xorg-xrandr
then got the displays and etc by doing...
$ xrandr
Screen 0: minimum 8 x 8, current 3000 x 1920, maximum 32767 x 32767
eDP1 connected primary (normal left inverted right x axis y axis)
1920x1080 60.01 + 59.93 48.01
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 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 480mm x 270mm
1920x1080 60.00*+ 59.94 30.00 29.97
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 59.90
1280x960 60.00
1280x800 59.91
1152x864 75.00
1280x720 60.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
DP2 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 connected 1080x1920+1920+0 left (normal left inverted right x axis y axis) 510mm x 290mm
1920x1080 60.00*+
1680x1050 59.88
1600x900 60.00
1280x1024 60.02
1440x900 59.90
1280x720 60.00
1024x768 60.00
800x600 60.32
640x480 59.94
720x400 70.08
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
then with this information I added to /usr/share/sddm/scripts/Xsetup these lines:
xrandr --output eDP1 --off
xrandr --output DP1 --mode 1920x1080 --pos 0x0 --rotate normal --output HDMI2 --mode 1920x1080 --pos 1920x0 --rotate left
and about the dock, I had powertop --auto-tune running as a systemd service on startup, just disabled and it is all good.
now my KDE Display settings is like this from the beginning
I hope this may help others around!
Last edited by noobr (2019-09-11 21:22:30)
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Thank you for the detailed solution!
You mentioned you disabled Powertop, but I assume you use it for saving power. In the wiki the remark for extracting the commands and pointers to the recommended configuration are quite helpful imo.
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