Chromebook: Acer Chromebook Spin 11 (CP311-H1, CP311-1HN)
Firmware: MrChromebook.tech
Installation Method: ISO

Problem:

Using Ubuntu Mainline Kernel Installer, I'd installed kernel 5.10.16 out of curiosity.
I had reboot my Chromebook. Everything looked normal as I logged in, however my
monitor wasn't detected by my Chromebook.

Since the Spin 11 doesn't have a HDMI port, I've been using a USB-C to HDMI Cable
with my external monitor.

I rebooted my Chromebook and logged into kernel 4.16.18 and my monitor was immediately
recognized again. This is not a problem specific problem to GalliumOS however. I've installed Ubuntu 20.4 and
Arch Linux on the latest kernel and my monitor still doesn't connect.

I'm not certain if this applies to all Apollo Lake Chromebooks but since GalliumOS 4.0 is in the works, on issue #566
you're aiming for kernel 5.4/5.6+. I'm not sure if external monitors would work on those patches as well but it's something to
keep in mind. It would be a major deal breaker if my monitor doesn't work on 4.0.