[gdm-list] unable to retrieve session after switch user and lock screen

[magina antimage <magina the antimage 001 gmail com>]

Hi,
        I am unable to retrieve my session when i try to switch user
or lock screen
         getting this error:
gdm-binary[2844]: WARNING: GdmDisplayAccessFile: Unable to remove X11
authority directory '/var/run/gdm/auth-for-lokesh-OA7oLB': Directory
not empty
gdm-binary[2844]: WARNING: GdmDisplayAccessFile: Unable to remove X11
authority directory '/var/run/gdm/auth-for-gdm-gcymlg': Directory not
empty

"lokesh" is my user name
permissions of /var/run/gdm are
drwx--x--x. 15 root gdm 4096 May 22 gdm