我最近更新了我的 arch Linux 系统，现在无法再启动 X 服务器了。我没有使用图形登录屏幕，而是在登录后自动运行 startx。
自更新以来，我只收到一条错误消息，并且计算机冻结，没有运行图形环境。
这是 xorg.0.log 文件：
[ 393.882] X.Org X Server 1.19.3
Release Date: 2017-03-15
[ 393.882] X Protocol Version 11, Revision 0
[ 393.882] Build Operating System: Linux 4.9.11-1-ARCH x86_64
[ 393.882] Current Operating System: Linux yoga-510-arch 4.11.3-1-ARCH #1 SMP PREEMPT Sun May 28 10:40:17 CEST 2017 x86_64
[ 393.883] Kernel command line: initrd=\intel-ucode.img initrd=\initramfs-linux.img root=UUID=b0c31b50-c336-4e3e-866b-be816a2fa200 rootfstype=ext4 add_efi_memmap rw
[ 393.883] Build Date: 07 April 2017 05:42:48PM
[ 393.883]
[ 393.883] Current version of pixman: 0.34.0
[ 393.883] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 393.883] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 393.884] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Jun 10 00:07:18 2017
[ 393.888] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 393.888] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 393.890] (==) No Layout section. Using the first Screen section.
[ 393.890] (==) No screen section available. Using defaults.
[ 393.890] (**) |-->Screen "Default Screen Section" (0)
[ 393.890] (**) | |-->Monitor "<default monitor>"
[ 393.890] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 393.890] (==) Automatically adding devices
[ 393.890] (==) Automatically enabling devices
[ 393.890] (==) Automatically adding GPU devices
[ 393.890] (==) Automatically binding GPU devices
[ 393.890] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 393.892] (WW) The directory "/usr/share/fonts/Type1/" does not exist.
[ 393.892] Entry deleted from font path.
[ 393.893] (==) FontPath set to:
/usr/share/fonts/misc/,
/usr/share/fonts/TTF/,
/usr/share/fonts/OTF/,
/usr/share/fonts/100dpi/,
/usr/share/fonts/75dpi/
[ 393.893] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 393.893] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 393.893] (II) Loader magic: 0x822d60
[ 393.893] (II) Module ABI versions:
[ 393.893] X.Org ANSI C Emulation: 0.4
[ 393.893] X.Org Video Driver: 23.0
[ 393.893] X.Org XInput driver : 24.1
[ 393.893] X.Org Server Extension : 10.0
[ 393.894] (++) using VT number 1
[ 393.894] (--) controlling tty is VT number 1, auto-enabling KeepTty
[ 393.895] (II) systemd-logind: took control of session /org/freedesktop/login1/session/c2
[ 393.896] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 393.896] (II) systemd-logind: got fd for /dev/dri/card0 226:0 fd 11 paused 0
[ 393.897] (II) xfree86: Adding drm device (/dev/dri/card1)
[ 400.237] (EE) systemd-logind: failed to take device /dev/dri/card1: Message recipient disconnected
我该如何解决这个问题，或者只是找出其确切原因？