is it possible to cat the docking status on modern thinkpads?

olocin · 2018-02-04 02:47:55

I use a thinkpad t460s.
I'd like to modifiy my .xinitrc with something like

cat /proc/acpi....
if (status=docked) then do something

but it appears that docking with modern thinkpads is treated more like an event.
Is it still possible to read somewhere the docked/undocked status?

Trilby · 2018-02-04 03:04:32

I doubt you'd find anything in /proc/. I'm pretty sure there'd be some changes in /sys/, but personally I'd take the stupid simple approach. In the case of my x200s and their docking stations:

if [ -e /dev/sr0 ]; then
   # ...
fi

This works for the x200s as sr0 is the optical drive present on the dock but not on the laptop itself. The device node is created when/while docked.

progandy · 2018-02-04 03:54:59

thinkwiki should have most of the relevant information.
http://www.thinkwiki.org/wiki/Docking_Solutions
https://phihag.de/2012/thinkpad-docking.html
You could write a status file when you receive the events.

Last edited by progandy (2018-02-04 03:56:11)

olocin · 2018-02-04 04:11:49

I had looked into the thinkwiki, but I prefer the stupid simple approach.
Could you guys point to some places where I may look (like /sys /dev ..) in the case of my t460s with ultra dock?

olocin · 2018-02-04 04:17:28

the one (probably too stupid) I could think of is

xrandr | grep -o 'DP-2-2 connected' | grep -o connected

with 'if' command.

Trilby · 2018-02-04 12:09:06

Are there no devices on the docking station such that my x200 solution wouldn't work? If you want to use xrandr, don't use 2 greps, and don't use a separate conditional:

if $(xrandr | grep -q 'DP-2-2 connected'); then
   # ...
fi

As for telling you what's difference under /sys with and without the dock, I doubt anyone here can unless you find someone with exactly the same model. But you're sitting at the right model now, explore. Or just diff and `ls /dev/` from docked and not to use the device node solution I already posted.

Last edited by Trilby (2018-02-04 12:12:08)

olocin · 2018-02-04 15:09:09

Thanks, I will do some experiments, but already a solution with if and xrandr should do the dirty job

olocin · 2018-02-05 02:52:57

Ok, so right now this is my .xinitrc file: does it look fine to you guys?

#!/bin/sh
rm ~/.config/chromium-flags.conf
touch ~/.config/chromium-flags.conf
echo '--password-store=gnome' >> ~/.config/chromium-flags.conf

if $(xrandr | grep -q 'DP-2-2 connected'); then
	xrandr --output eDP-1 --off
	nmcli radio wifi off
else
	xrandr --dpi 216
	echo '--force-device-scale-factor=2' >> ~/.config/chromium-flags.conf
	nmcli radio wifi on
fi

eval $(/usr/bin/gnome-keyring-daemon --start --components=pkcs11,secrets,ssh)
export SSH_AUTH_SOCK
~/Projects/suckless/dropbox.py start &> dropbox.log
~/Projects/suckless/dwm_status.sh &
udiskie &
feh --bg-center ~/Pictures/m1.jpg
xautolock -time 20 -locker slock &

usermodmap=$HOME/.Xmodmap
sysresources=/etc/X11/xinit/.Xresources
sysmodmap=/etc/X11/xinit/.Xmodmap

# merge in defaults and keymaps

if [ -f $sysresources ]; then
    xrdb -merge $sysresources
fi

if [ -f $sysmodmap ]; then
    xmodmap $sysmodmap
fi

if [ -f "$userresources" ]; then
    xrdb -merge "$userresources"
fi

if [ -f "$usermodmap" ]; then
    xmodmap "$usermodmap"
fi

if [ -d /etc/X11/xinit/xinitrc.d ] ; then
 for f in /etc/X11/xinit/xinitrc.d/?*.sh ; do
  [ -x "$f" ] && . "$f"
 done
 unset f
fi

exec dwm

Trilby · 2018-02-05 03:34:10

rm, touch, and echo are all redundant, the last echo is sufficient if you use a single `>` rather than `>>` (or a `>|` if you have 'noclobber' set).

Arch Linux

#1 2018-02-04 02:47:55

is it possible to cat the docking status on modern thinkpads?

#2 2018-02-04 03:04:32

Re: is it possible to cat the docking status on modern thinkpads?

#3 2018-02-04 03:54:59

Re: is it possible to cat the docking status on modern thinkpads?

#4 2018-02-04 04:11:49

Re: is it possible to cat the docking status on modern thinkpads?

#5 2018-02-04 04:17:28

Re: is it possible to cat the docking status on modern thinkpads?

#6 2018-02-04 12:09:06

Re: is it possible to cat the docking status on modern thinkpads?

#7 2018-02-04 15:09:09

Re: is it possible to cat the docking status on modern thinkpads?

#8 2018-02-05 02:52:57

Re: is it possible to cat the docking status on modern thinkpads?

#9 2018-02-05 03:34:10

Re: is it possible to cat the docking status on modern thinkpads?

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