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@ -1,5 +1,5 @@
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x11vnc README file Date: Tue Jul 3 14:37:44 EDT 2007
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x11vnc README file Date: Fri Aug 3 17:26:56 EDT 2007
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The following information is taken from these URLs:
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The following information is taken from these URLs:
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@ -43,10 +43,12 @@ x11vnc: a VNC server for real X displays
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should work on nearly all Unixes. I also added some enhancements to
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should work on nearly all Unixes. I also added some enhancements to
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improve the interactive response, add many features, etc.
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improve the interactive response, add many features, etc.
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This page and the [19]FAQ contain a lot of information [20][*],
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This page including the [19]FAQ contains much information [20][*];
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solutions to many problems, and interesting applications, but
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solutions to many problems; and interesting applications, but
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nevertheless please feel free to [21]contact me if you have problems
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nevertheless please feel free to [21]contact me if you have problems
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or questions.
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or questions. Please do check the FAQ; I realize this page is massive,
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but you can often use your browser's find-in-page action to find the
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discussion of your problem or question.
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Please help [22]beta test the new performance speedup feature using
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Please help [22]beta test the new performance speedup feature using
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[23]viewer-side pixel caching. Let me know how it goes; thanks.
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[23]viewer-side pixel caching. Let me know how it goes; thanks.
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@ -4383,30 +4385,37 @@ xprop -root -f VNC_CONNECT 8s -set VNC_CONNECT "$1"
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You can, but you would not be doing this for performance reasons (for
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You can, but you would not be doing this for performance reasons (for
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virtual X sessions via VNC, Xvnc should give the fastest response).
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virtual X sessions via VNC, Xvnc should give the fastest response).
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You may want to do this because Xvnc does not support an X server
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You may want to do this because Xvnc is buggy and crashes, does not
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extension you desire, or you want to take advantage of one of x11vnc's
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support an X server extension you desire, or you want to take
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unending number of options and features.
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advantage of one of x11vnc's unending number of options and features.
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One way to acheive this is to have a Xvfb(1) virtual framebuffer X
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One way to acheive this is to have a Xvfb(1) virtual framebuffer X
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server running in the background and have x11vnc attached to it.
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server running in the background and have x11vnc attached to it.
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Another method, faster and more accurate is to use the "dummy" Device
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Another method, faster and more accurate, is to use the "dummy" Device
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Driver in XFree86/Xorg (see below). One could view this desktop both
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Driver in XFree86/Xorg (see below).
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remotely and also [567]locally using vncviewer. Make sure vncviewer's
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"-encodings raw" is in effect for local viewing (compression seems to
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In either case, one can view this desktop both remotely and also
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slow things down locally). For local viewing you set up a "bare"
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[567]locally using vncviewer. Make sure vncviewer's "-encodings raw"
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window manager that just starts up vncviewer and nothing else
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is in effect for local viewing (compression seems to slow things down
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([568]See below).
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locally). For local viewing you set up a "bare" window manager that
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just starts up vncviewer and nothing else ([568]See how below).
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Here is one way to start up Xvfb:
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Here is one way to start up Xvfb:
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xinit -- /usr/X11R6/bin/Xvfb :1 -cc 4 -screen 0 1024x768x16
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xinit -- /usr/X11R6/bin/Xvfb :1 -cc 4 -screen 0 1024x768x16
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This starts up a 16bpp virtual display. To export it via VNC use
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This starts up a 16bpp virtual display. To export it via VNC use
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"x11vnc -display :1 ...". The "-cc 4" option is to force Xvfb to use a
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x11vnc -display :1 ...
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TrueColor visual instead of DirectColor.
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Then have the remote vncviewer attach to x11vnc's VNC display (e.g. :0
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which is port 5900).
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The "-cc 4" Xvfb option is to force it to use a TrueColor visual
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instead of DirectColor (this works around a recent bug in the Xorg
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Xvfb server).
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One good thing about Xvfb is that the virtual framebuffer exists in
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One good thing about Xvfb is that the virtual framebuffer exists in
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main memory (rather than in the video hardware), and so x11vnc can
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main memory (rather than in the video hardware), and so x11vnc can
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"screen scrape" it efficiently (more than, say, 100X faster than
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"screen scrape" it very efficiently (more than, say, 100X faster than
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normal video hardware).
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normal video hardware).
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Update Nov/2006: See the [569]FINDCREATEDISPLAY discussion of the
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Update Nov/2006: See the [569]FINDCREATEDISPLAY discussion of the
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@ -4419,7 +4428,7 @@ xprop -root -f VNC_CONNECT 8s -set VNC_CONNECT "$1"
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[572]-create, [573]-svc, and [574]-xdmsvc aliases can also come in
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[572]-create, [573]-svc, and [574]-xdmsvc aliases can also come in
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handy here.
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handy here.
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There are some annoyances WRT Xvfb though. The default keyboard
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There are some annoyances WRT Xvfb however. The default keyboard
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mapping seems to be very poor. One should run x11vnc with
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mapping seems to be very poor. One should run x11vnc with
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[575]-add_keysyms option to have keysyms added automatically. Also, to
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[575]-add_keysyms option to have keysyms added automatically. Also, to
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add the Shift_R and Control_R modifiers something like this is needed:
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add the Shift_R and Control_R modifiers something like this is needed:
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@ -4434,17 +4443,17 @@ xmodmap -e "keycode any = Meta_L"
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xmodmap -e "add Mod1 = Alt_L Alt_R Meta_L"
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xmodmap -e "add Mod1 = Alt_L Alt_R Meta_L"
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(note: these are applied automatically in the [576]FINDCREATEDISPLAY
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(note: these are applied automatically in the [576]FINDCREATEDISPLAY
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mode). Perhaps the Xvfb options -xkbdb or -xkbmap could be used to get
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mode of x11vnc). Perhaps the Xvfb options -xkbdb or -xkbmap could be
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a better default keyboard mapping.
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used to get a better default keyboard mapping...
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A user points out a faster and more accurate method is to use the
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Dummy Driver: A user points out a faster and more accurate method is
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"dummy" Device Driver of XFree86/Xorg instead of Xvfb. He uses this to
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to use the "dummy" Device Driver of XFree86/Xorg instead of Xvfb. He
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create a persistent and resizable desktop accessible from anywhere. In
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uses this to create a persistent and resizable desktop accessible from
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the Device Section of the config file set Driver "dummy". You may also
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anywhere. In the Device Section of the config file set Driver "dummy".
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need to set VideoRam NNN to be large enough to hold the framebuffer.
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You may also need to set VideoRam NNN to be large enough to hold the
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The framebuffer is kept in main memory like Xvfb except that the
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framebuffer. The framebuffer is kept in main memory like Xvfb except
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server code is closely correlated with the real XFree86/Xorg Xserver
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that the server code is closely correlated with the real XFree86/Xorg
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unlike Xvfb.
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Xserver unlike Xvfb.
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The main drawback to this method (besides requiring extra
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The main drawback to this method (besides requiring extra
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configuration and possibly root permission) is that it also does the
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configuration and possibly root permission) is that it also does the
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@ -4471,9 +4480,10 @@ startx -- /path/to/Xdummy :1
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other virtual X sessions, say Xnest or even Xvnc itself (useful for
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other virtual X sessions, say Xnest or even Xvnc itself (useful for
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testing x11vnc).
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testing x11vnc).
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Local access: To access your virtual X display locally (i.e. while
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Local access: You use a VNC viewer to access the display remotely; to
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sitting at the same machine it is running on) one can perhaps have
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access your virtual X display locally (i.e. while sitting at the same
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something like this in their $HOME/.xinitrc
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machine it is running on) one can perhaps have something like this in
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their $HOME/.xinitrc
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#!/bin/sh
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#!/bin/sh
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x11vnc -display :5 -rfbport 5905 -bg
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x11vnc -display :5 -rfbport 5905 -bg
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vncviewer -geometry +0+0 -encodings raw -passwd $HOME/.vnc/passwd localhost:5
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vncviewer -geometry +0+0 -encodings raw -passwd $HOME/.vnc/passwd localhost:5
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@ -11046,7 +11056,7 @@ x11vnc: a VNC server for real X displays
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Here are all of x11vnc command line options:
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Here are all of x11vnc command line options:
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% x11vnc -opts (see below for -help long descriptions)
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% x11vnc -opts (see below for -help long descriptions)
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x11vnc: allow VNC connections to real X11 displays. 0.9.3 lastmod: 2007-07-03
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x11vnc: allow VNC connections to real X11 displays. 0.9.3 lastmod: 2007-08-03
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x11vnc options:
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x11vnc options:
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-display disp -auth file -N
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-display disp -auth file -N
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@ -11110,23 +11120,23 @@ x11vnc options:
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-speeds rd,bw,lat -wmdt string -debug_pointer
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-speeds rd,bw,lat -wmdt string -debug_pointer
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-debug_keyboard -defer time -wait time
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-debug_keyboard -defer time -wait time
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-wait_ui factor -nowait_bog -slow_fb time
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-wait_ui factor -nowait_bog -slow_fb time
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-readtimeout n -nap -nonap
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-xrefresh time -readtimeout n -nap
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-sb time -nofbpm -fbpm
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-nonap -sb time -nofbpm
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-nodpms -dpms -forcedpms
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-fbpm -nodpms -dpms
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-clientdpms -noserverdpms -noultraext
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-forcedpms -clientdpms -noserverdpms
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-noxdamage -xd_area A -xd_mem f
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-noultraext -noxdamage -xd_area A
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-sigpipe string -threads -nothreads
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-xd_mem f -sigpipe string -threads
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-fs f -gaps n -grow n
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-nothreads -fs f -gaps n
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-fuzz n -debug_tiles -snapfb
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-grow n -fuzz n -debug_tiles
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-rawfb string -freqtab file -pipeinput cmd
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-snapfb -rawfb string -freqtab file
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-macnodim -macnosleep -macnosaver
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-pipeinput cmd -macnodim -macnosleep
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-macnowait -macwheel n -macnoswap
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-macnosaver -macnowait -macwheel n
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-macnoresize -maciconanim n -macmenu
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-macnoswap -macnoresize -maciconanim n
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-gui [gui-opts] -remote command -query variable
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-macmenu -gui [gui-opts] -remote command
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-QD variable -sync -noremote
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-query variable -QD variable -sync
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-yesremote -unsafe -safer
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-noremote -yesremote -unsafe
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-privremote -nocmds -allowedcmds list
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-safer -privremote -nocmds
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-deny_all
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-allowedcmds list -deny_all
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libvncserver options:
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libvncserver options:
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-rfbport port TCP port for RFB protocol
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-rfbport port TCP port for RFB protocol
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@ -11160,7 +11170,7 @@ libvncserver-tight-extension options:
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% x11vnc -help
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% x11vnc -help
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x11vnc: allow VNC connections to real X11 displays. 0.9.3 lastmod: 2007-07-03
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x11vnc: allow VNC connections to real X11 displays. 0.9.3 lastmod: 2007-08-03
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(type "x11vnc -opts" to just list the options.)
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(type "x11vnc -opts" to just list the options.)
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@ -13905,6 +13915,12 @@ t
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For special purpose usage where a low frame rate is
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For special purpose usage where a low frame rate is
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acceptable and desirable, but you want the user input
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acceptable and desirable, but you want the user input
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processed at the normal rate so you cannot use -wait.
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processed at the normal rate so you cannot use -wait.
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-xrefresh time Floating point time in seconds to indicate how often to
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do the equivalent of xrefresh(1) to force all windows
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(in the viewable area if -id, -sid, or -clip is used)
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to repaint themselves. Use this only if applications
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misbehave by not repainting themselves properly.
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See also -noxdamage.
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-readtimeout n Set libvncserver rfbMaxClientWait to n seconds. On
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-readtimeout n Set libvncserver rfbMaxClientWait to n seconds. On
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slow links that take a long time to paint the first
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slow links that take a long time to paint the first
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screen libvncserver may hit the timeout and drop the
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screen libvncserver may hit the timeout and drop the
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@ -14833,6 +14849,7 @@ n
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wait_bog disable -nowait_bog mode.
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wait_bog disable -nowait_bog mode.
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nowait_bog enable -nowait_bog mode.
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nowait_bog enable -nowait_bog mode.
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slow_fb:f set -slow_fb to f seconds.
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slow_fb:f set -slow_fb to f seconds.
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xrefresh:f set -xrefresh to f seconds.
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readtimeout:n set read timeout to n seconds.
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readtimeout:n set read timeout to n seconds.
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nap enable -nap mode.
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nap enable -nap mode.
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nonap disable -nap mode.
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nonap disable -nap mode.
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@ -14982,15 +14999,15 @@ n
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nowf wireframelocal wfl nowireframelocal nowfl
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nowf wireframelocal wfl nowireframelocal nowfl
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wirecopyrect wcr nowirecopyrect nowcr scr_area
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wirecopyrect wcr nowirecopyrect nowcr scr_area
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scr_skip scr_inc scr_keys scr_term scr_keyrepeat
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scr_skip scr_inc scr_keys scr_term scr_keyrepeat
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scr_parms scrollcopyrect scr noscrollcopyrect
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scr_parms scrollcopyrect scr noscrollcopyrect noscr
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noscr fixscreen noxrecord xrecord reset_record
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fixscreen noxrecord xrecord reset_record pointer_mode
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pointer_mode pm input_skip allinput noallinput input
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pm input_skip allinput noallinput input grabkbd
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grabkbd nograbkbd grabptr nograbptr grabalways
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nograbkbd grabptr nograbptr grabalways nograbalways
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nograbalways client_input ssltimeout speeds wmdt
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client_input ssltimeout speeds wmdt debug_pointer dp
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debug_pointer dp nodebug_pointer nodp debug_keyboard
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nodebug_pointer nodp debug_keyboard dk nodebug_keyboard
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dk nodebug_keyboard nodk deferupdate defer wait_ui
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nodk deferupdate defer wait_ui wait_bog nowait_bog
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wait_bog nowait_bog slow_fb wait readtimeout nap nonap
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slow_fb xrefresh wait readtimeout nap nonap sb
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sb screen_blank fbpm nofbpm dpms nodpms clientdpms
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screen_blank fbpm nofbpm dpms nodpms clientdpms
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noclientdpms forcedpms noforcedpms noserverdpms
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noclientdpms forcedpms noforcedpms noserverdpms
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serverdpms noultraext ultraext fs gaps grow fuzz snapfb
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serverdpms noultraext ultraext fs gaps grow fuzz snapfb
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nosnapfb rawfb uinput_accel uinput_thresh uinput_reset
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nosnapfb rawfb uinput_accel uinput_thresh uinput_reset
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runge
17 years ago