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salonkommunist

Member

From: Germany

Registered: 2020-02-18

Posts: 36

ThinkPad x270 won't detect external display when docked

Using my x270 in a docking station works just fine, the only issue is that the HDMI display which is connected to the dock is only recognized upon boot. When I attach the running system to the dock however, the system fails to recognize the display.

Any advice on how to tackle this?

$ grep dockd .xmonad/xmonad.hs
    spawnOnce "dockd --daemon &"

$ cat /etc/dockd/docked.conf

[Screen]
height=1080
width=1920
mm_height=285
mm_width=508

[CRTC]
crtc=63
x=0
y=0
rotation=1
mode=1920x1080
outputs_len=1
outputs_0=eDP1

[CRTC]
crtc=64
x=0
y=0
rotation=1
mode=1920x1080
outputs_len=1
outputs_0=DP2-1

[CRTC]
crtc=65
x=0
y=0
rotation=1
mode=None
outputs_len=0

[CRTC]
crtc=66
x=0
y=0
rotation=1
mode=None
outputs_len=0

$ systemctl status acpid

● acpid.service - ACPI event daemon
     Loaded: loaded (/usr/lib/systemd/system/acpid.service; enabled; vendor preset: disabled)
     Active: active (running) since Fri 2021-04-09 21:27:49 CEST; 10min ago
       Docs: man:acpid(8)
   Main PID: 488 (acpid)
      Tasks: 1 (limit: 18878)
     Memory: 348.0K
        CPU: 363ms
     CGroup: /system.slice/acpid.service
             └─488 /usr/bin/acpid --foreground --netlink

Apr 09 21:27:49 x270 acpid[488]: starting up with netlink and the input layer
Apr 09 21:27:49 x270 acpid[488]: 1 rule loaded
Apr 09 21:27:49 x270 acpid[488]: waiting for events: event logging is off
Apr 09 21:27:53 x270 root[572]: ACPI group/action undefined: jack/videoout / VIDEOOUT
Apr 09 21:28:17 x270 acpid[488]: client connected from 696[1000:1000]
Apr 09 21:28:17 x270 acpid[488]: 1 client rule loaded
Apr 09 21:28:17 x270 acpid[488]: client connected from 696[1000:1000]
Apr 09 21:28:17 x270 acpid[488]: 1 client rule loaded
Apr 09 21:28:17 x270 acpid[488]: client connected from 710[1000:1000]
Apr 09 21:28:17 x270 acpid[488]: 1 client rule loaded