Debian 7.8 why black screen on startup?

Question

Debian

Hello, I created the user adduser user1, restarted, but I can’t log in, I still had to create a directory.
Logged in as a different user through the GUI, deleted user1, and created it again as it should. Turned off. I turn it on, a black screen, the mouse icon is somehow incomprehensible and does not reach the user's choice. You have to go ctrl+alt+f1 and startx.
Tell me how to cure?
In the logs:

[    19.258] 
X.Org X Server 1.12.4
Release Date: 2012-08-27
[    19.258] X Protocol Version 11, Revision 0
[    19.258] Build Operating System: Linux 3.2.0-4-amd64 i686 Debian
[    19.258] Current Operating System: Linux scaff 3.2.0-4-686-pae #1 SMP Debian 3.2.65-1+deb7u2 i686
[    19.258] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.0-4-686-pae root=UUID=2ff66514-eca0-4d3f-9c59-63b257778b27 ro quiet
[    19.258] Build Date: 09 February 2015  10:12:47AM
[    19.258] xorg-server 2:1.12.4-6+deb7u6 (Julien Cristau <[email protected]>) 
[    19.258] Current version of pixman: 0.26.0
[    19.258] 	Before reporting problems, check http://wiki.x.org
  to make sure that you have the latest version.
[    19.258] Markers: (--) probed, (**) from config file, (==) default setting,
  (++) from command line, (!!) notice, (II) informational,
  (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    19.258] (==) Log file: "/var/log/Xorg.0.log", Time: Tue Jun 30 17:44:38 2015
[    19.283] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    19.310] (==) No Layout section.  Using the first Screen section.

Answer 1

Stopped working gdm installed slim

Answer 2

sudo mv /home/user1 /home/user1.back
sudo userdel user1
Then create a new one.