没有连接显示器就无法启动 x11vnc

Question

我想设置x11vnc（或任何其他 vnc 服务器）在启动时启动。显示管理器是kdm，发行版是 Ubuntu 12.04.2 LTS。

当我尝试启动 x11vnc 时，出现以下错误：

$ x11vnc -rfbauth /var/run/xauth/A:0-crWk72  -rfbport 5901
 passing arg to libvncserver: -rfbauth
 passing arg to libvncserver: /var/run/xauth/A:0-crWk72
 passing arg to libvncserver: -rfbport
 passing arg to libvncserver: 5901
 x11vnc version: 0.9.12 lastmod: 2010-09-09  pid: 2828
 XOpenDisplay("") failed.
 Trying again with XAUTHLOCALHOSTNAME=localhost ...

 *** XOpenDisplay failed. No -display or DISPLAY.
 *** Trying ":0" in 4 seconds.  Press Ctrl-C to abort.
 *** 1 2 3 4 
 XOpenDisplay(":0") failed.
 Trying again with XAUTHLOCALHOSTNAME=localhost ...
 XOpenDisplay(":0") failed.
 Trying again with unset XAUTHLOCALHOSTNAME ...

我已经尝试安装xserver-xorg-video-dummy以避免没有连接屏幕的问题，但到目前为止没有成功。

Answer 1

我想出了以下解决方案：

1. sudo apt-get install x11vnc xserver-xorg-video-dummy

2. 检查/etc/default/grub它是否包含nomodeset标志：

   GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"

3. 根据您的设置创建（或修改）/etc/X11/xorg.conf、修改USER和LISTEN寻址。

Section "Monitor"
Identifier "Monitor0"
HorizSync 28.0-80.0
VertRefresh 48.0-75.0
# 1680x1050 @ 60.00 Hz (GTF) hsync: 65.22 kHz; pclk: 147.14 MHz
Modeline "1680x1050_60.00" 147.14 1680 1784 1968 2256 1050 1051 1054 1087 -HSync +Vsync
EndSection

Section "Device"
  Identifier "Card0"
  Driver "dummy"
  VideoRam 256000
EndSection

Section "Screen"
DefaultDepth 24
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
    SubSection "Display"
    Depth 24
    Modes "1680x1050"    
    EndSubSection
EndSection

您可以生成自己的分辨率。

4 - 在中创建服务脚本 /etc/init.d/vncserver

#!/bin/sh -e
### BEGIN INIT INFO
# Provides:          vncserver
# Required-Start:    networking
# Default-Start:     3 4 5
# Default-Stop:      0 6
### END INIT INFO

PATH="$PATH:/usr/X11R6/bin/" CMD="/usr/bin/x11vnc"

# The Username:Group that will run VNC 
export USER="your_username"

# The display that VNC will use DISPLAY="1"

# Color depth (between 8 and 32) DEPTH="16"

# The Desktop geometry to use.
#GEOMETRY="<WIDTH>x<HEIGHT>"
#GEOMETRY="800x600" GEOMETRY="1680x1050"
#GEOMETRY="1280x1024"

# The name that the VNC Desktop will have. NAME="my-vnc-server"

PORT=5900 
LISTEN="192.168.1.10"


OPTIONS="-xkb -noxrecord -noxfixes -noxdamage -listen ${LISTEN} -name ${NAME} -depth ${DEPTH} -geometry ${GEOMETRY} :${DISPLAY} -auth guess
-usepw ~/.vnc/passwd -rfbport ${PORT} -forever -bg -oa /var/log/x11vnc.log"

. /lib/lsb/init-functions

case "$1" in start) echo ${OPTIONS} log_action_begin_msg "Starting vncserver for user '${USER}' on localhost:${DISPLAY}" su ${USER} -c "${CMD} ${OPTIONS}" ;;

stop) log_action_begin_msg "Stoping vncserver for user '${USER}' on localhost:${DISPLAY}" su ${USER} -c "${CMD} -kill :${DISPLAY}" ;;

restart) $0 stop $0 start ;; esac

exit 0