进入xwindows后系统挂起（黑屏）键盘鼠标没有响应@FreeBSD

问题：黑屏能看见鼠标，键盘和鼠标没有反应

在不小心升级pkg包后，系统无法进入xfce等xwindows，表现为黑屏和能看见鼠标，左上角有一个白字符块，键盘鼠标没有反应，整个系统卡住。但是可以ssh登录，内部的服务一切正常。

处理过程：

前面都是弯路，直接可以跳到Xorg配置和解决no screens found 报错问题这两部分。

使用xrandr查看显示

输入xrandr

报错can't open display

现在的问题就是解决么有display的问题，大约是在某个时间段，FreeBSD修改了xwindows的某个部件。。。。

用ssh登进去测试：

startx

xauth: file /home/skywalk/.serverauth.7188 does not exist

/usr/local/libexec/Xorg.wrap: Only console users are allowed to run the X server

xinit: giving up

xinit: unable to connect to X server: Connection refused

xinit: server error

最后发现本身正常的时候，在tty控制台执行xrandr也是报错can't open display，所以这里走了弯路，一直在尝试解决这个报错。也就是这个报错不用去管它。

安装wayfile试试

# pkg install wayfire wf-shell alacritty swaylock-effects swayidle wlogout kanshi mako wlsunset

问题照旧

咨询bing

You could do this (if your DISPLAY is :0):

$ export DISPLAY=:0

$ xrandr --listmonitors

$ xrandr your_command

输入set DISPLAY=:0

xrandr --listmonitors

还是Can't open display

（最终知道，xrandr这里是走弯路了，tty等下面本身就是Can't open display，在xwindows下才能显示显示器那些数值）

重新学习FreeBSD手册

学到使用pciconf来查看显卡

pciconf -lv|grep -B4 VGA
vgapci0@pci0:0:2:0:	class=0x030000 rev=0x09 hdr=0x00 vendor=0x8086 device=0x1616 subvendor=0x17aa subdevice=0x2226vendor     = 'Intel Corporation'device     = 'HD Graphics 5500'class      = displaysubclass   = VGA

查看是biso还是uefi

sysctl machdep.bootmethod
machdep.bootmethod: UEFI

当然这个数据不重要

安装intel显卡

pkg install drm-kmod
sysrc kld_list+=i915kms

降低intel显卡的cpu占用

pkg install libva-intel-driver mesa-libs mesa-dri

当然这不是必须的。

Xorg配置

Xorg Configuration

Xorg supports most common video cards, keyboards, and pointing devices.

Video cards, monitors, and input devices are automatically detected and do not require any manual configuration. Do not create xorg.conf or run a Xorg -configure step unless automatic configuration fails.

也就是除非自动配置失败，否则不需要使用下面命令或创建xorg.conf文件

sudo Xorg -configure
_XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: server already running
(EE) 
Fatal server error:
(EE) Cannot establish any listening sockets - Make sure an X server isn't already running(EE) 
(EE) 
Please consult the The X.Org Foundation support at http://wiki.x.orgfor help. 
(EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
(EE) 
(EE) Server terminated with error (1). Closing log file.

intel显卡配置

Example 1. Select Intel® Video Driver in a File

/usr/local/etc/X11/xorg.conf.d/20-intel.conf

Section "Device"Identifier "Card0"Driver     "intel"
EndSection

尝试手工写这个文件20-intel.conf（当然最终是没有用到，把这个文件屏蔽掉了）

再次看显卡：

pciconf -lv | grep -B3 display
vgapci0@pci0:0:2:0:	class=0x030000 rev=0x09 hdr=0x00 vendor=0x8086 device=0x1616 subvendor=0x17aa subdevice=0x2226vendor     = 'Intel Corporation'device     = 'HD Graphics 5500'class      = display

使用X -config调用配置文件

执行测试

sudo X -config /root/xorg.conf.new
密码：
_XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: server already running
(EE) 
Fatal server error:
(EE) Cannot establish any listening sockets - Make sure an X server isn't already running(EE) 
(EE) 
Please consult the The X.Org Foundation support at http://wiki.x.orgfor help. 
(EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
(EE) 
(EE) Server terminated with error (1). Closing log file.

执行startx（好像问题照旧）

重新删除和安装Xorg和xfce包

重新删除Xorg和xfce包，重新安装，执行startx

报错no screens 。现在的问题就变成解决no screens这个问题了。这个问题最终解决方法，见后面。

查看生成的X配置文件

cat /root/xorg.conf.new 
Section "ServerLayout"Identifier     "X.org Configured"Screen      0  "Screen0" 0 0InputDevice    "Mouse0" "CorePointer"InputDevice    "Keyboard0" "CoreKeyboard"
EndSectionSection "Files"ModulePath   "/usr/local/lib/xorg/modules"FontPath     "/usr/local/share/fonts/misc/"FontPath     "/usr/local/share/fonts/TTF/"FontPath     "/usr/local/share/fonts/OTF/"FontPath     "/usr/local/share/fonts/Type1/"FontPath     "/usr/local/share/fonts/100dpi/"FontPath     "/usr/local/share/fonts/75dpi/"FontPath     "catalogue:/usr/local/etc/X11/fontpath.d"
EndSectionSection "Module"Load  "glx"
EndSectionSection "InputDevice"Identifier  "Keyboard0"Driver      "kbd"
EndSectionSection "InputDevice"Identifier  "Mouse0"Driver      "mouse"Option	    "Protocol" "auto"Option	    "Device" "/dev/sysmouse"Option	    "ZAxisMapping" "4 5 6 7"
EndSectionSection "Monitor"Identifier   "Monitor0"VendorName   "Monitor Vendor"ModelName    "Monitor Model"
EndSectionSection "Device"### Available Driver options are:-### Values: <i>: integer, <f>: float, <bool>: "True"/"False",### <string>: "String", <freq>: "<f> Hz/kHz/MHz",### <percent>: "<f>%"### [arg]: arg optional#Option     "Accel"              	# [<bool>]#Option     "AccelMethod"        	# <str>#Option     "Backlight"          	# <str>#Option     "CustomEDID"         	# <str>#Option     "DRI"                	# <str>#Option     "Present"            	# [<bool>]#Option     "ColorKey"           	# <i>#Option     "VideoKey"           	# <i>#Option     "Tiling"             	# [<bool>]#Option     "LinearFramebuffer"  	# [<bool>]#Option     "HWRotation"         	# [<bool>]#Option     "VSync"              	# [<bool>]#Option     "PageFlip"           	# [<bool>]#Option     "SwapbuffersWait"    	# [<bool>]#Option     "TripleBuffer"       	# [<bool>]#Option     "XvPreferOverlay"    	# [<bool>]#Option     "HotPlug"            	# [<bool>]#Option     "ReprobeOutputs"     	# [<bool>]#Option     "XvMC"               	# [<bool>]#Option     "ZaphodHeads"        	# <str>#Option     "VirtualHeads"       	# <i>#Option     "TearFree"           	# [<bool>]#Option     "PerCrtcPixmaps"     	# [<bool>]#Option     "FallbackDebug"      	# [<bool>]#Option     "DebugFlushBatches"  	# [<bool>]#Option     "DebugFlushCaches"   	# [<bool>]#Option     "DebugWait"          	# [<bool>]#Option     "BufferCache"        	# [<bool>]Identifier  "Card0"Driver      "intel"BusID       "PCI:0:2:0"
EndSectionSection "Screen"Identifier "Screen0"Device     "Card0"Monitor    "Monitor0"SubSection "Display"Viewport   0 0Depth     1EndSubSectionSubSection "Display"Viewport   0 0Depth     4EndSubSectionSubSection "Display"Viewport   0 0Depth     8EndSubSectionSubSection "Display"Viewport   0 0Depth     15EndSubSectionSubSection "Display"Viewport   0 0Depth     16EndSubSectionSubSection "Display"Viewport   0 0Depth     24EndSubSection
EndSection

这样一通，启动后报错：no screens found

至少现在启动Xwindows不会卡死了，有小小的进步。

解决no screens found 报错问题

详细见：Xorg启动后报错no screens found(EE)（未解决）-CSDN博客

装驱动试试

sudo pkg install libva-intel-media-driver

startx后同样报错

试试安装intel-compute-runtime-llvm13

intel-compute-runtime-llvm13

问题照旧

后面重装了Xorg、Xfce4

更新升级FreeBSD

具体做了如下操作：

upgrade FreeBSD 13.1 to 13.3 and then upgrade to 14.1

reinstall intel driver and Xorg Xfce4

at last install xf86-input-evdev

升级FreeBSD从13.1到13.3，然后再升级到14.1版本。

重新安装了Intel 显卡驱动和Xorg Xfce4

这时候startx还是报错，但是startxfce4能够进入Xfce4桌面了，问题是鼠标和键盘会卡住。

这个时候跟刚开始有点类似，只不过刚开始的时候是无法进入Xfce4桌面，而是屏幕显示左上角一个白色方块，中间是鼠标，鼠标和键盘都无法响应。而现在是能进入Xfce4桌面，鼠标和键盘都无法响应。

尝试安装envdev，try install evdev

通过搜索网上得知，鼠标和键盘无法响应可能是输入模块有问题，也就是xf86-input-evdev模块，于是安装这个模块：

pkg install xf86-input-evdev

then keyboard and mouse are OK !

安装完成后，鼠标和键盘正常。这样系统就基本修复完成了。

总结

整个解决问题的过程可以说是步履蹒跚。大致分成三个组成部分：

1 尝试解决xrandr的报错：can't open display，后来发现是乌龙，tty下本来就是报错的。这里走了弯路。

2 一顿操作猛如虎，现在至少每次startx的时候，系统不会卡住了。也就是启动后，鼠标键盘不会卡死，可以通过Ctrl+alt+Fn组合键，切换到Tty控制台，进行后面的操作。

所做的主要操作就是升级了FreeBSD的核心，从13.1升级到14.1，并重装了xorg Xfce以及其它驱动软件包。

最后发现更新完这些软件包后，删除掉以前手工写的config文件后（/usr/local/etc/X11/xorg.conf.d/）系统能够进入xfce桌面，但是鼠标和键盘卡住。

3 解决鼠标键盘卡住的问题

操作就是安装xf86-input-evdev

pkg install xf86-input-evdev

关于no screens found的问题，值得单开一篇，文档记录：Xorg启动后报错no screens found(EE)（未解决）-CSDN博客