Debugging hlwm + GDM

~ > xprop -root
AT_SPI_BUS(STRING) = "unix:abstract=/tmp/dbus-v3SdipEyac,guid=0f9205ce134a03b771fd0c4754cdb6aa"
__HERBST_HOOK_WIN_ID(ATOM) = undefined atom # 0x800007
_NET_WM_NAME(UTF8_STRING) = "herbstluftwm"
_NET_SUPPORTING_WM_CHECK(WINDOW): window id # 0x800001
_ICC_PROFILE_IN_X_VERSION(CARDINAL) = 3
_ICC_PROFILE(CARDINAL) = 0, 0, 5, 40, 108, 99, 109, 115, 4, 48, 0, 0, 109, 110, 116, 114, 82, 71, 66, 32, 88, 89, 90, 32, 7, 223, 0, 1, 0, 8, 0, 2, 0, 18, 0, 29, 97, 99, 115, 112, 65, 80, 80, 76, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 246, 214, 0, 1, 0, 0, 0, 0, 211, 45, 108, 99, 109, 115, 22, 148, 46, 68, 108, 142, 23, 42, 213, 15, 77, 61, 73, 88, 229, 208, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 100, 101, 115, 99, 0, 0, 1, 44, 0, 0, 0, 84, 99, 112, 114, 116, 0, 0, 1, 128, 0, 0, 0, 136, 119, 116, 112, 116, 0, 0, 2, 8, 0, 0, 0, 20, 99, 104, 97, 100, 0, 0, 2, 28, 0, 0, 0, 44, 114, 88, 89, 90, 0, 0, 2, 72, 0, 0, 0, 20, 98, 88, 89, 90, 0, 0, 2, 92, 0, 0, 0, 20, 103, 88, 89, 90, 0, 0, 2, 112, 0, 0, 0, 20, 114, 84, 82, 67, 0, 0, 2, 132, 0, 0, 0, 16, 103, 84, 82, 67, 0, 0, 2, 132, 0, 0, 0, 16, 98, 84, 82, 67, 0, 0, 2, 132, 0, 0, 0, 16, 99, 104, 114, 109, 0, 0, 2, 148, 0, 0, 0, 36, 109, 101, 116, 97, 0, 0, 2, 184, 0, 0, 1, 224, 100, 109, 110, 100, 0, 0, 4, 152, 0, 0, 0, 60, 100, 109, 100, 100, 0, 0, 4, 212, 0, 0, 0, 84, 109, 108, 117, 99, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 12, 101, 110, 85, 83, 0, 0, 0, 56, 0, 0, 0, 28, 0, 72, 0, 80, 0, 32, 0, 80, 0, 97, 0, 118, 0, 105, 0, 108, 0, 105, 0, 111, 0, 110, 0, 32, 0, 100, 0, 118, 0, 55, 0, 32, 0, 78, 0, 111, 0, 116, 0, 101, 0, 98, 0, 111, 0, 111, 0, 107, 0, 32, 0, 80, 0, 67, 0, 0, 109, 108, 117, 99, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 12, 101, 110, 85, 83, 0, 0, 0, 108, 0, 0, 0, 28, 0, 84, 0, 104, 0, 105, 0, 115, 0, 32, 0, 112, 0, 114, 0, 111, 0, 102, 0, 105, 0, 108, 0, 101, 0, 32, 0, 105, 0, 115, 0, 32, 0, 102, 0, 114, 0, 101, 0, 101, 0, 32, 0, 111, 0, 102, 0, 32, 0, 107, 0, 110, 0, 111, 0, 119, 0, 110, 0, 32, 0, 99, 0, 111, 0, 112, 0, 121, 0, 114, 0, 105, 0, 103, 0, 104, 0, 116, 0, 32, 0, 114, 0, 101, 0, 115, 0, 116, 0, 114, 0, 105, 0, 99, 0, 116, 0, 105, 0, 111, 0, 110, 0, 115, 0, 46, 0, 0, 88, 89, 90, 32, 0, 0, 0, 0, 0, 0, 246, 214, 0, 1, 0, 0, 0, 0, 211, 45, 115, 102, 51, 50, 0, 0, 0, 0, 0, 1, 12, 26, 0, 0, 5, 192, 255, 255, 242, 254, 0, 0, 7, 96, 0, 0, 253, 206, 255, 255, 251, 151, 255, 255, 253, 149, 0, 0, 3, 244, 0, 0, 191, 78, 88, 89, 90, 32, 0, 0, 0, 0, 0, 0, 116, 158, 0, 0, 64, 139, 0, 0, 5, 39, 88, 89, 90, 32, 0, 0, 0, 0, 0, 0, 41, 252, 0, 0, 34, 10, 0, 0, 188, 5, 88, 89, 90, 32, 0, 0, 0, 0, 0, 0, 88, 60, 0, 0, 157, 107, 0, 0, 18, 1, 112, 97, 114, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 51, 51, 99, 104, 114, 109, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 157, 128, 0, 0, 88, 128, 0, 0, 80, 128, 0, 0, 154, 0, 0, 0, 38, 192, 0, 0, 28, 0, 100, 105, 99, 116, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 16, 0, 0, 0, 128, 0, 0, 0, 18, 0, 0, 0, 146, 0, 0, 0, 6, 0, 0, 0, 152, 0, 0, 0, 22, 0, 0, 0, 174, 0, 0, 0, 12, 0, 0, 0, 186, 0, 0, 0, 34, 0, 0, 0, 220, 0, 0, 0, 24, 0, 0, 0, 244, 0, 0, 0, 22, 0, 0, 1, 10, 0, 0, 0, 42, 0, 0, 1, 52, 0, 0, 0, 16, 0, 0, 1, 68, 0, 0, 0, 64, 0, 0, 1, 132, 0, 0, 0, 20, 0, 0, 1, 152, 0, 0, 0, 42, 0, 0, 1, 194, 0, 0, 0, 22, 0, 0, 1, 216, 0, 0, 0, 8, 0, 69, 0, 68, 0, 73, 0, 68, 0, 95, 0, 109, 0, 110, 0, 102, 0, 116, 0, 76, 0, 71, 0, 68, 0, 67, 0, 77, 0, 70, 0, 95, 0, 118, 0, 101, 0, 114, 0, 115, 0, 105, 0, 111, 0, 110, 0, 51, 0, 46, 0, 49, 0, 52, 0, 46, 0, 50, 0, 77, 0, 65, 0, 80, 0, 80, 0, 73, 0, 78, 0, 71, 0, 95, 0, 100, 0, 101, 0, 118, 0, 105, 0, 99, 0, 101, 0, 95, 0, 105, 0, 100, 0, 120, 0, 114, 0, 97, 0, 110, 0, 100, 0, 114, 0, 45, 0, 76, 0, 86, 0, 68, 0, 83, 0, 49, 0, 67, 0, 77, 0, 70, 0, 95, 0, 112, 0, 114, 0, 111, 0, 100, 0, 117, 0, 99, 0, 116, 0, 103, 0, 110, 0, 111, 0, 109, 0, 101, 0, 45, 0, 115, 0, 101, 0, 116, 0, 116, 0, 105, 0, 110, 0, 103, 0, 115, 0, 45, 0, 100, 0, 97, 0, 101, 0, 109, 0, 111, 0, 110, 0, 69, 0, 68, 0, 73, 0, 68, 0, 95, 0, 109, 0, 100, 0, 53, 0, 102, 0, 101, 0, 52, 0, 48, 0, 102, 0, 98, 0, 55, 0, 101, 0, 99, 0, 97, 0, 100, 0, 100, 0, 52, 0, 98, 0, 50, 0, 51, 0, 52, 0, 55, 0, 99, 0, 102, 0, 99, 0, 54, 0, 57, 0, 99, 0, 48, 0, 102, 0, 100, 0, 48, 0, 102, 0, 50, 0, 50, 0, 99, 0, 67, 0, 77, 0, 70, 0, 95, 0, 98, 0, 105, 0, 110, 0, 97, 0, 114, 0, 121, 0, 103, 0, 110, 0, 111, 0, 109, 0, 101, 0, 45, 0, 115, 0, 101, 0, 116, 0, 116, 0, 105, 0, 110, 0, 103, 0, 115, 0, 45, 0, 100, 0, 97, 0, 101, 0, 109, 0, 111, 0, 110, 0, 68, 0, 65, 0, 84, 0, 65, 0, 95, 0, 115, 0, 111, 0, 117, 0, 114, 0, 99, 0, 101, 0, 101, 0, 100, 0, 105, 0, 100, 109, 108, 117, 99, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 12, 101, 110, 85, 83, 0, 0, 0, 32, 0, 0, 0, 28, 0, 72, 0, 101, 0, 119, 0, 108, 0, 101, 0, 116, 0, 116, 0, 32, 0, 80, 0, 97, 0, 99, 0, 107, 0, 97, 0, 114, 0, 100, 0, 0, 109, 108, 117, 99, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 12, 101, 110, 85, 83, 0, 0, 0, 56, 0, 0, 0, 28, 0, 72, 0, 80, 0, 32, 0, 80, 0, 97, 0, 118, 0, 105, 0, 108, 0, 105, 0, 111, 0, 110, 0, 32, 0, 100, 0, 118, 0, 55, 0, 32, 0, 78, 0, 111, 0, 116, 0, 101, 0, 98, 0, 111, 0, 111, 0, 107, 0, 32, 0, 80, 0, 67, 0, 0
_NET_WORKAREA(CARDINAL) = 0, 0, 1600, 900, 0, 0, 1600, 900, 0, 0, 1600, 900, 0, 0, 1600, 900
_NET_ACTIVE_WINDOW(WINDOW): window id # 0x1200007
_NET_CLIENT_LIST_STACKING(WINDOW): window id # 0x1200007
_NET_CLIENT_LIST(WINDOW): window id # 0x1200007
XIM_SERVERS(ATOM) = @server=ibus
_NET_CURRENT_DESKTOP(CARDINAL) = 0
_NET_DESKTOP_NAMES(UTF8_STRING) = "1", "2", "3", "4", "5", "6", "7", "8", "9"
_NET_NUMBER_OF_DESKTOPS(CARDINAL) = 9
_NET_DESKTOP_GEOMETRY(CARDINAL) = 1600, 900
_NET_DESKTOP_VIEWPORT(CARDINAL) = 0, 33
_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
WM_ICON_SIZE(CARDINAL):
                minimum icon size: 32 by 32
                maximum icon size: 32 by 32
                incremental size change: 0 by 0
_GNOME_MAX_SCREEN_SIZE(CARDINAL) = 8192
_GNOME_SESSION_ACCELERATED(CARDINAL) = 1
RESOURCE_MANAGER(STRING) = "Xft.antialias:\t1\nXft.dpi:\t96\nXft.hinting:\ttrue\nXft.hintstyle:\thintmedium\nXft.rgba:\tnone\n"
_XKB_RULES_NAMES(STRING) = "evdev", "evdev", "us", "altgr-intl", ""
Xorg_Seat(STRING) = "seat0"
XFree86_has_VT(INTEGER) = 1
XFree86_VT(INTEGER) = 1