Some notes on OpenBSD 7.2 on a Thinkpad X201

Some notes on OpenBSD 7.2 on a Thinkpad X201
============================================

It has been a while since I had a laptop running OpenBSD.

Recently I bought a refurbished Thinkpad X201, so this was
a great occasion to put OpenBSD on it.

Of course, installing OpenBSD on a Thinkpad is not
difficult.

You need to install OpenBSD with an ethernet cable
attached, in order to be able to run fwupdate. This
installs firmware for the wifi card. After that, wifi
works fine.

Lenovo Thinkpad X201

The X201 is a machine from 2010, and one of the last
Thinkpad X-models with a classical keyboard. And like all
Thinkpads, it has a great TrackPoint.

Some specs of the refurbished laptop I bought:
* Intel Core i5 M 520 CPU
* 4 GB DDR3 RAM 2Rx8
* 1200x800 display resolution
* 128 Gb SSD (SAMSUNG MZ7LN128)

Perfectly usable

Although the specs are not very spectacular, this machine
is perfecty usable. It all depends on how it is used, of
course.

I set it up mostly with the great tools from suckless.org:
* dwm window manager, with slstatus
* st virtual terminal

Most of the time I am either in tmux, mostly for ssh
sessions to remote machines, or in Emacs, to read email,
use-net and follow RSS-feeds, and to visit websites with
eww, and Gopherholes and Gemini capsules with Elpher.

I also use Firefox, which in practice turns out to be the
heaviest user of the memory.

Keyboard and TrackPoint

The X201 has a small trackpad with two buttonst. The --for
Thinkpads typical-- TrackPoint comes with three buttons.

I don't use the trackpad, the TrackPoint functions very
fine.

In .xinitrc I have some lines to improve the usablilty of
the trackppint:

xinput set-prop "/dev/wsmouse" "WS Pointer Wheel Emulation" 1
xinput set-prop "/dev/wsmouse" "WS Pointer Wheel Emulation Button" 2
xinput set-prop "/dev/wsmouse" "WS Pointer Wheel Emulation Axes" 6 7 4 5
xinput set-prop /dev/wsmouse "Device Accel Constant Deceleration" 0.2

This makes it possible to use the TrackPoint for
scrolling, by moving the pointer up or down with the
middle button pushed down.

In the BIOS I have changed the setting so the Fn key
functions as the left Control key, and the left Control
key functions as the Fn key.

I have added /etc/wsconsctl.conf with the following line:

keyboard.map+="keysym Caps_Lock = Control_L"

This sets up the Capslock key as an extra Control key.

Also in .xinitrc I have some lines with some keyboard
mods:

xmodmap -e "keycode 234 = Prior"
xmodmap -e "keycode 233 = Next"

This makes the two keys left and right of the upper arrow
key behave like those on newer Thinkpads, as PageUp and
PageDown.

Battery life

I installed the package obsdfreqd.

In /etc/rc.conf.local are the following lines:

apmd_flags=-L
pkg_scripts=obsdfreqd

With a fully charged battery, slstatus reports a battery
life around 3.5 hours.

With sysctl hw.sensors.acpibat0 we get some information
about the battery:

hw.sensors.acpibat0.volt0=11.10 VDC (voltage)
hw.sensors.acpibat0.volt1=11.68 VDC (current voltage)
hw.sensors.acpibat0.current0=1.31 A (rate)
hw.sensors.acpibat0.amphour0=4.56 Ah (last full capacity)
hw.sensors.acpibat0.amphour1=0.23 Ah (warning capacity)
hw.sensors.acpibat0.amphour2=0.02 Ah (low capacity)
hw.sensors.acpibat0.amphour3=2.29 Ah (remaining capacity), OK
hw.sensors.acpibat0.amphour4=9.32 Ah (design capacity)
hw.sensors.acpibat0.raw0=1 (battery discharging), OK

Other stuff

When I close the lid, the laptop goes to sleep.

After opening the lid again, the laptop wakes up,
including the Wifi and X.

I was able to mount a SD-card and boot from an SD card.

Overall experience

The display resolution of 1200x800 is a bit crampy when
opening two windows in Emacs side-by-side.

I am touch-typist, and typing on the X201 keyboard is
wonderful. The keyboard is a bit loud.

With the deceleration mod, mentioned above, the TrackPoint
is a joy to use. It feels completely effortless to use the
TrackPoint.

The escape key is located where it should be, above the F1
key. On my X270 it is left of the Function keys, so it
takes some time to get again used to the Escape key in its
proper place.

The X201 and the X270 are almost identical in size, but
one way or the other, the X201 feels smaller.

References

There are plenty pages on the internet about OpenBSD on
laptops and of course OpenBSD supplies wonderful
documentation.

Here are some useful pages:

* https://www.c0ffee.net/blog/openbsd-on-a-laptop
* https://sohcahtoa.org.uk/openbsd.html
* https://paedubucher.ch/articles/2020-09-05-openbsd-on-the-desktop-part-i.html
* https://dataswamp.org/~solene/2022-04-21-openbsd-71-fan-noise-temperature.html/etc/wsconsctl.conf

Last edited: $Date: 2023/03/04 16:16:04 $