簡單描述一下就是所有用戶（包括guest）都不能登陸圖形界面，輸完密碼後閃一下回到登陸界面（密碼沒錯），登陸命令行沒有什麼問題。
搜了很多答案，大多和下面的文件有關，這裡描述一下。
**貌似#開頭的各行字體都很大，下面注釋部分的# 換成了 /* # / *
~/.Xauthority權限也沒什麼問題，不是root
~/.xsession-errors文件沒有任何內容，
~/.bashrc已刪，直接從/etc/skel/拷了一個過來
/etc/environment在發生以上錯誤的時候只有一句，PATH= .../usr/bin.../sbin...bin
具體內容不太記得了，網上有說這個文件可以沒有，刪了說不定能解決問題，已刪，還是登不上。。
~/.dmrc 內容如下
[Desktop]
Session=xubuntu
/etc/profile內容如下
/* # / /etc/profile: system-wide .profile file for the Bourne shell (sh(1))
/ # */ and Bourne compatible shells (bash(1), ksh(1), ash(1), ...).
if [ "$PS1" ]; then
if [ "$BASH" ] && [ "$BASH" != "/bin/sh" ]; then
# The file bash.bashrc already sets the default PS1.
# PS1='\h:\w\$ '
if [ -f /etc/bash.bashrc ]; then
. /etc/bash.bashrc
fi
else
if [ "id -u" -eq 0 ]; then
PS1='# '
else
PS1='$ '
fi
fi
fi
/* # /The default umask is now handled by pam_umask.
/ # */See pam_umask(8) and /etc/login.defs.
if [ -d /etc/profile.d ]; then
for i in /etc/profile.d/*.sh; do
if [ -r $i ]; then
. $i
fi
done
unset i
fi
~/.profile文件
/* # / ~/.profile: executed by the command interpreter for login shells.
/ # / This file is not read by bash(1), if ~/.bash_profile or ~/.bash_login
/ # / exists.
/ # / see /usr/share/doc/bash/examples/startup-files for examples.
/ # */ the files are located in the bash-doc package.
/* # / the default umask is set in /etc/profile; for setting the umask
/ # / for ssh logins, install and configure the libpam-umask package.
/ # */ umask 022
/* # */ if running bash
if [ -n "$BASH_VERSION" ]; then
# include .bashrc if it exists
if [ -f "$HOME/.bashrc" ]; then
. "$HOME/.bashrc"
fi
fi
/* # */ set PATH so it includes user's private bin if it exists
if [ -d "$HOME/bin" ] ; then
PATH="$HOME/bin:$PATH"
fi
~/.xinputrc
/* # / im-config(8) generated on Tue, 14 Apr 2015 16:42:42 +0300
run_im ibus
/ # */ im-config signiture: 8dbc7d7fb557ea9fc729e2b2efbd16d3 -
bash.bashrc文件
/* # */ System-wide .bashrc file for interactive bash(1) shells.
/* # / To enable the settings / commands in this file for login shells as well,
/ # */ this file has to be sourced in /etc/profile.
/* # */ If not running interactively, don't do anything
[ -z "$PS1" ] && return
/* # / check the window size after each command and, if necessary,
/ # */ update the values of LINES and COLUMNS.
shopt -s checkwinsize
/* # */ set variable identifying the chroot you work in (used in the prompt below)
if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
debian_chroot=$(cat /etc/debian_chroot)
fi
/* # */ set a fancy prompt (non-color, overwrite the one in /etc/profile)
PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
/* # / Commented out, don't overwrite xterm -T "title" -n "icontitle" by default.
/ # / If this is an xterm set the title to user@host:dir
/ # /case "$TERM" in
/ # /xterm|rxvt*)
/* # / PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD}\007"'
/ # / ;;
/ # /)
/* # / ;;
/ # */esac
/* # / enable bash completion in interactive shells
/ # / if ! shopt -oq posix; then
/ # / if [ -f /usr/share/bash-completion/bash_completion ]; then
/ # / . /usr/share/bash-completion/bash_completion
/ # / elif [ -f /etc/bash_completion ]; then
/ # / . /etc/bash_completion
/ # / fi
/ # */fi
/* # */ sudo hint
if [ ! -e "$HOME/.sudo_as_admin_successful" ] && [ ! -e "$HOME/.hushlogin" ] ; then
case " $(groups) " in *\ admin\ *)
if [ -x /usr/bin/sudo ]; then
cat <<-EOF
To run a command as administrator (user "root"), use "sudo ".
See "man sudo_root" for details.
EOF
fi
esac
fi
/* # */ if the command-not-found package is installed, use it
if [ -x /usr/lib/command-not-found -o -x /usr/share/command-not-found/command-not-found ]; then
function command_not_found_handle {
# check because c-n-f could've been removed in the meantime
if [ -x /usr/lib/command-not-found ]; then
/usr/lib/command-not-found -- "$1"
return $?
elif [ -x /usr/share/command-not-found/command-not-found ]; then
/usr/share/command-not-found/command-not-found -- "$1"
return $?
else
printf "%s: command not found\n" "$1" >&2
return 127
fi
}
fi
小白，剛用Linux不久，求大神點撥
重裝系統吧，shell庫出問題了
