Debugging hlwm w/o GDM

~ > xprop -root
_NET_ACTIVE_WINDOW(WINDOW): window id # 0x1000039
AT_SPI_BUS(STRING) = "unix:abstract=/tmp/dbus-HIwsdKL1uf,guid=139491e9f1d4799ccbd59ac454cdb8fc"
_NET_CURRENT_DESKTOP(CARDINAL) = 0
_NET_CLIENT_LIST_STACKING(WINDOW): window id # 0x1000039, 0x1400001
_NET_CLIENT_LIST(WINDOW): window id # 0x1000039, 0x1400001
_NET_DESKTOP_NAMES(UTF8_STRING) = "1", "2", "3", "4", "5", "6", "7", "8", "9"
_NET_NUMBER_OF_DESKTOPS(CARDINAL) = 9
__HERBST_HOOK_WIN_ID(ATOM) = undefined atom # 0x800007
_NET_DESKTOP_VIEWPORT(CARDINAL) = 0, 0
_NET_WM_NAME(UTF8_STRING) = "herbstluftwm"
_NET_SUPPORTING_WM_CHECK(WINDOW): window id # 0x800001
_NET_SUPPORTED(ATOM) = _NET_SUPPORTED, _NET_CLIENT_LIST, _NET_CLIENT_LIST_STACKING, _NET_NUMBER_OF_DESKTOPS, _NET_CURRENT_DESKTOP, _NET_DESKTOP_NAMES, _NET_WM_DESKTOP, _NET_DESKTOP_VIEWPORT, _NET_ACTIVE_WINDOW, _NET_WM_NAME, _NET_SUPPORTING_WM_CHECK, _NET_WM_WINDOW_TYPE, _NET_WM_STATE, _NET_WM_WINDOW_OPACITY, _NET_MOVERESIZE_WINDOW, _NET_WM_MOVERESIZE, _NET_FRAME_EXTENTS, _NET_WM_STATE_FULLSCREEN, _NET_WM_STATE_DEMANDS_ATTENTION, _NET_WM_WINDOW_TYPE_DESKTOP, _NET_WM_WINDOW_TYPE_DOCK, _NET_WM_WINDOW_TYPE_TOOLBAR, _NET_WM_WINDOW_TYPE_MENU, _NET_WM_WINDOW_TYPE_UTILITY, _NET_WM_WINDOW_TYPE_SPLASH, _NET_WM_WINDOW_TYPE_DIALOG, _NET_WM_WINDOW_TYPE_DROPDOWN_MENU, _NET_WM_WINDOW_TYPE_POPUP_MENU, _NET_WM_WINDOW_TYPE_TOOLTIP, _NET_WM_WINDOW_TYPE_NOTIFICATION, _NET_WM_WINDOW_TYPE_COMBO, _NET_WM_WINDOW_TYPE_DND, _NET_WM_WINDOW_TYPE_NORMAL
_XKB_RULES_NAMES(STRING) = "evdev", "evdev", "us", "altgr-intl", ""
XFree86_has_VT(INTEGER) = 1
XFree86_VT(INTEGER) = 2