Linux
Arch
<p>Change grub resolution:</p>
<pre><code>sudo subl /etc/default/grub
</code></pre>
<p>Edit (run videotest from grub via c to see supported)</p>
<pre><code>GRUB_GFXMODE=1024x768x32
</code></pre>
<p>Rebuild grub with this or equiv</p>
<pre><code>sudo grub-mkconfig -o /boot/grub/grub.cfg
</code></pre>
<hr />
<p>In the same file you can change the default text resolution by appending the res to this line</p>
<pre><code>GRUB_CMDLINE_LINUX_DEFAULT=quiet resume=UUID=75a2dd2e-c8d0-4400-a8c8-182ae551cb8d video=1600x900
</code></pre>
<p>Rebuild grub</p>