先查看相关日志

1
2
3
4
5
systemctl status gdm
journalctl -xe|grep gdm
journalctl -u gdm
cat ~/.local/share/xorg/Xorg.0.log
cat /var/log/Xorg.0.lo

或者手动启动xsession测试：

1
2
startx

看到里面报错是载入/etc/X11/xorg.conf报错的。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
[    55.890] (==) Using config file: "/etc/X11/xorg.conf"
[    55.890] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    55.891] (==) ServerLayout "Layout0"
[    55.891] (**) |-->Screen "Screen0" (0)
[    55.891] (**) |   |-->Monitor "Monitor0"
[    55.892] (**) |   |-->Device "Device0"
[    55.892] (**) |-->Input Device "Keyboard0"
[    55.892] (**) |-->Input Device "Mouse0"
[    55.892] (==) Automatically adding devices
[    55.892] (==) Automatically enabling devices
[    55.892] (==) Automatically adding GPU devices
[    55.912] (II) Loading sub module "ramdac"
[    55.912] (II) LoadModule: "ramdac"
[    55.912] (II) Module "ramdac" already built-in
[    55.915] (EE) No devices detected.
[    55.915] (EE) 
Fatal server error:
[    55.915] (EE) no screens found(EE) 
[    55.915] (EE) 
Please consult the The X.Org Foundation support

删除这个文件之后再次startx，居然可以了。

说些什么吧！

utterances