Kodi GUI never shows up

Describe your issue

What's the expected behaviour?

Kodi GUI on bootup

What's the current behaviour?

It boots to a login, but TinyDM doesn't start

How to reproduce your issue?

More or less default build with pmbootstrap

What device are you using?

RockPro64

On what postmarketOS version did you encounter the issue?

• edge (master branch)
• stable (v20.05 branch)

On what environment did you encounter the issue?

Phone environments

• Phosh
• Plasma Mobile
• Sxmo

Other

• No environment
• GNOME
• KDE Plasma
• Kodi
• MATE
• Shelli
• Sway
• Weston
• Xfce4
• fbkeyboard
• i3wm

How did you get postmarketOS image?

• from https://images.postmarketos.org
• I built it using pmbootstrap
• It was preinstalled on my device

What's the build date of the image? (in yyyy-mm-dd format)

20210213

Additional information

I think this MR was incomplete, and there is some sort of missing dependency.

There might be a bug in tinydm-openrc as autologin does not accept -- as an option.

supervise-daemon tinydm --start /usr/bin/autologin -- user tinydm-run-session

$ /usr/bin/autologin -- user tinydm-run-session
pam_acct_mgmt failed: User not known to the underlying authentication module

The tinydm log also had an error about permissions

00:00:00.018 [ERROR] [backend/session/direct.c:49] Failed to open /dev/dri/card1: Permission denied

I tried chmod/chgrp but that didn't solve the issue.