Não consigo logar no Ubuntu 16.04 [duplicado]

Question

O Ubuntu instalou algumas atualizações e, após a reinicialização, não consigo efetuar login. Ele parece aceitar, mas emite um bipe e retorna à tela de login. Todos os usuários, incluindo convidados, fazem a mesma coisa.

Eu estava procurando algumas outras postagens aqui e tentei algumas das sugestões sem sucesso. Eu olhei para o arquivo .xsession-errors, mas não entendi o erro:

X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  3 (X_GLXCreateContext)
  Value in failed request:  0x0
  Serial number of failed request:  34
  Current serial number in output stream:  35
openConnection: connect: No such file or directory
cannot connect to brltty at :0
upstart: gnome-session (Unity) main process (1751) terminated with status 1
upstart: unity-settings-daemon main process (1737) killed by TERM signal
upstart: Disconnected from notified D-Bus bus
upstart: logrotate main process (1601) killed by TERM signal
upstart: update-notifier-crash (/var/crash/_usr_bin_compiz.1001.crash) main process (1669) killed by TERM signal
upstart: update-notifier-crash (/var/crash/_usr_bin_compiz.1002.crash) main process (1671) killed by TERM signal
upstart: bamfdaemon main process (1730) killed by TERM signal
upstart: hud main process (1735) killed by TERM signal
upstart: indicator-bluetooth main process (1795) killed by TERM signal
upstart: indicator-power main process (1796) killed by TERM signal
upstart: indicator-datetime main process (1797) killed by TERM signal
upstart: indicator-application main process (1844) killed by TERM signal
upstart: job window-stack-bridge failed to stop

Obrigado David

    

Answer 1

Defina a propriedade apropriada para .Xauthority e .ICEauthority.

chown username:username .Xauthority
chown username:username .ICEauthority

Definir permissão para / tmp

sudo chmod a+wt /tmp

Reinicie o lightdm

dpkg-reconfigure lightdm
sudo service lightdm restart

Reinicie e faça o login, isso deve resolver seu problema, se não remover o driver de gráficos incompatível:

Para a Nvidia:

sudo nvidia-settings --uninstall 
sudo apt-get remove --purge nvidia*

Para amd:

sudo apt-get purge fglrx*