Comment 16 for bug 1382291

I've not looked to the logic behind hidpi scaling in a bit, but iirc unity-settings-daemon doesn't apply the factor to the session.

In GNOME g-s-d does it, but the unity case is more complex since we have different factors (gtk being an int, unity being a float, ...) so we let unity do the magic.

Of course in the oem installer mode unity is not running so nothing is setting the xsettings that would make gtk do the hidpi transformations...

@Shih-Yuan, your patch add support of the unity scaling to u-s-d, but is that really helping in the case where unity is not running? We should probably just make u-s-d apply the gtk factor if unity is not there, that should work right?