Inserting Lenovo ThinkPad X200s into (UltraBase) docking station mirror screen is always activated leading to non-optimal resolution [closed]

Question

• Builtin LCD should be 1440x900
• External LCD should be 1920x1080

If Lenovo ThinkPad X200s is inserted into docking station the option mirror screen is always activated leading to a resolution of 1152x864 which looks terrible on the built-in and external LCD screen.

My manual configuration for docking mode (separate screens with maximum resolution) should be respected, but "Make Default" button has no consequences.

Answer 1

This is not a real solution but I have noticed that (atleast for my x61s) Ubuntu respects monitor configurations correctly if you dock your ThinkPad while it is suspended and resume after that.

I hadn't even noticed this bug before as I suspend so often.

Answer 2

As you pointed out:

This is a workaround for this bug:

/etc/udev/rules.d/99-vga.rules:

SUBSYSTEM=="drm", ACTION=="change", RUN+="/usr/local/sbin/vga_changed.sh"

/usr/local/sbin/vga_changed.sh:

#!/bin/bash
dmode="$(cat /sys/class/drm/card0-VGA-1/status)"

export DISPLAY=:0.0

if [ "${dmode}" = disconnected ]; then
    /usr/bin/sudo -u kiu /usr/bin/xrandr --output LVDS1 --mode 1440x900 --pos 0x0 --output VGA1 --off
elif [ "${dmode}" = connected ]; then
    /usr/bin/sudo -u kiu /usr/bin/xrandr --output LVDS1 --mode 1440x900 --pos 0x0 --output VGA1 --auto --mode 1920x1080 --right-of LVDS1
fi