xfce and lxdm (lxde) - error login

1. /usr/share/xsessions/xfce.desktop

2. delete zawartość

3.

[Desktop Entry]
Encoding=UTF-8
Name=Xfce4
Comment=Use this session to run Xfce4 as your desktop environment
TryExec=/usr/bin/startxfce4
Exec=/usr/bin/startxfce4
Icon=/usr/local/share/pixmaps/xfce4_xicon1.png
Type=Application