昨天我像往常一样安装了一些更新，我注意到有一个新的内核版本和一个新的 nvidia 驱动程序版本。今天，登录屏幕的分辨率非常低，重新启动也没有帮助。输入密码后，系统日志中显示以下内容，几秒钟后我又回到了登录屏幕。
Nov 12 21:35:02 Kalle-PC lightdm: pam_ecryptfs: pam_sm_authenticate: /home/kalle is already mounted
Nov 12 21:35:02 Kalle-PC org.gtk.vfs.Daemon[4431]: A connection to the bus can't be made
Nov 12 21:35:02 Kalle-PC systemd[1]: Started Session c13 of user kalle.
Nov 12 21:35:03 Kalle-PC org.ayatana.bamf[4647]: bamfdaemon start/running, process 4702
Nov 12 21:35:04 Kalle-PC org.a11y.atspi.Registry[4799]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry
Nov 12 21:35:04 Kalle-PC dbus[933]: [system] Activating via systemd: service name='org.bluez' unit='dbus-org.bluez.service'
Nov 12 21:35:04 Kalle-PC systemd[1]: Started CUPS Scheduler.
Nov 12 21:35:04 Kalle-PC gnome-session[4788]: X Error of failed request: BadValue (integer parameter out of range for operation)
Nov 12 21:35:04 Kalle-PC gnome-session[4788]: Major opcode of failed request: 154 (GLX)
Nov 12 21:35:04 Kalle-PC gnome-session[4788]: Minor opcode of failed request: 3 (X_GLXCreateContext)
Nov 12 21:35:04 Kalle-PC gnome-session[4788]: Value in failed request: 0x0
Nov 12 21:35:04 Kalle-PC gnome-session[4788]: Serial number of failed request: 26
Nov 12 21:35:04 Kalle-PC gnome-session[4788]: Current serial number in output stream: 27
Nov 12 21:35:04 Kalle-PC gnome-session[4788]: gnome-session-check-accelerated: Helper exited with code 256
Nov 12 21:35:04 Kalle-PC gnome-session[4788]: gnome-session-binary[4788]: CRITICAL: We failed, but the fail whale is dead. Sorry....
Nov 12 21:35:04 Kalle-PC gnome-session-binary[4788]: CRITICAL: We failed, but the fail whale is dead. Sorry....
Nov 12 21:35:04 Kalle-PC lightdm[1090]: ** (lightdm:1090): CRITICAL **: session_get_login1_session_id: assertion 'session != NULL' failed
Nov 12 21:35:06 Kalle-PC acpid: client 4411[0:0] has disconnected
Nov 12 21:35:06 Kalle-PC acpid: client connected from 4936[0:0]
Nov 12 21:35:06 Kalle-PC acpid: 1 client rule loaded
Nov 12 21:35:06 Kalle-PC systemd[1]: Started Session c14 of user lightdm.
Nov 12 21:35:06 Kalle-PC org.a11y.atspi.Registry[4972]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry
我已经尝试过，apt-get purge nvidia-*然后apt-get install nvidia-current重新启动。这解决了问题，但我仍遇到登录错误。
有谁知道到底发生了什么事吗？
答案1
上次更新后，我遇到了同样的问题。看来，当前的 nvidia 驱动程序版本不起作用。我找到了这个帖子：
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-304/+bug/1639180
> Downgrade from 304.132 to 304.131:
> - CTRL+ALT+1 to console
> - login
> - sudo apt-get remove nvidia*
> - sudo apt-get autoremove
> - sudo apt-get install nvidia-304=304.131-0ubuntu3
干杯， Dimi