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<title>Remap PrtSc to Meta/Super</title>
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<header>
<h1>Remap PrtSc to Meta/Super</h1>
<small><time>2023-01-28</time></small>
</header>
<p>
On my Thinkpad T14s Gen 1, the right meta/super/windows key is replaced
by a "<kbd>PrtSc</kbd>" key. I use <a href="https://swaywm.org/">Sway</a> as my
Wayland compositor and use the meta keys a lot to navigate and manage
windows, and having only a left meta key makes some chords difficult to
use. I thus wanted to remap <kbd>PrtSc</kbd> to Meta.
</p>
<p>
I found <a href="https://github.com/rvaiya/keyd">keyd</a> which looked
promising. To use this, I need to know what key <kbd>PrtSc</kbd> maps to in the
OS. Using <code>evtest</code>:
</p>
<pre><code>Event: time 1674905628.580346, type 4 (EV_MSC), code 4 (MSC_SCAN), value b7
Event: time 1674905628.580346, type 1 (EV_KEY), code 99 (KEY_SYSRQ), value 1</code></pre>
<p>
It seems like it is interpreted as <kbd>SysRq</kbd>.
</p>
<p>
To only remap this keyboard and not any other keyboards connected to
the computer, we'll need the vendor and product id of the built-in
keyboard. That can be found in <code>/proc/bus/input/devices</code>:
</p>
<pre><code>$ cat /proc/bus/input/devices
I: Bus=0011 Vendor=0001 Product=0001 Version=ab83
N: Name="AT Translated Set 2 keyboard"
...
</code></pre>
<p>
<code>0001:0001</code>.
</p>
<p>
Next we'll configure keyd:
</p>
<pre><code>$ cat /etc/keyd/default.conf
[ids]
0001:0001
[main]
sysrq = rightmeta
</code></pre>
<p>
Restart keyd and we're done! The <kbd>PrtSc</kbd> key is interpreted as meta
instead.
</p>
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