Because `tty1` is active when `xinit@user.service` starts on `tty7`,
Xorg cannot bind the modesetting driver to the DRM device:
> (II) systemd-logind: got fd for /dev/dri/card2 226:2 fd 13 paused 1
> (EE) Error systemd-logind returned paused fd for drm node
To fix this, we need to start Xorg on the active console.
Another potential fix would be to run `chvt 7` before running `startx`,
but running the GUI on tty1 seems to be what the major display managers,
e.g. GDM, are doing now.
Now that the system clock is set from the RTC, the time will be close
enough to correct by the time Xorg starts that there won't be any
certificate issues. We can shave several seconds off the startup time
now.
[Playwright] is a cross-browser automation framework, intended for
automating browser-based GUI application tests. It also works as a
general remote-control tool for automating basically anything having to
do with a browser.
Playwright requires a special Firefox binary that it manages itself. To
avoid downloading and installing Playwright and Firefox, and thus
storing them in memory, we need them to be already available in the
rootfs image. Since I want the control software to be updated easily,
without rebooting the machine, I decided to separate it into its own
project, [Voonex]. A short shell script to install/update and run it is
launched by the systemd user instance.
[Playwright]: https://playwright.dev/
[Voonex]: https://git.pyrocufflink.blue/dustin/voonex
Dustin