Commit c71bc5d6 authored by Committed by Ray Strode
local-display-factory: Remove initial VT is in use check
The initial VT is in use check in on_vt_changed() is racy, when switching to VT1 from an active session, on_vt_changed() may run before logind has processed the VT change and then sd_seat_get_active() will return the active session which we are switching away from. This results in the greeter not being started on VT1. On my system gdm reliably wins the race resulting in not getting a greeter when manually switching from an active session to VT1. gdm already starts the greeter unconditionally from gdm_local_display_factory_sync_seats() on both startup and when an user session exits. gdm also starts it unconditionally when selecting "Switch user" from an user session. Now autologin sessions avoid the initial VT as well. So we now can assume that the initial VT is free for the login screen's use. And create_display already checks for and re-uses an existing greeter, so we can safely remove the racy check.
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