x11vnc

インストール方法:

x11vnc は、apt-get でインストールできます。

$ sudo apt-get install x11vnc

次に x11vnc に -storepasswd を指定して起動し、そのユーザのパスワードを設定して VNC サーバのパスワードを保存します。

$ x11vnc -storepasswd

自動起動の設定:

startx 実行時 (X サーバ起動時) に自動的に x11vnc を起動するには、以下の内容で ~/.config/autostart/x11vnc.desktop ファイルを作成する必要があります。(Raspbian 起動時に X サーバが自動起動するようになっている場合は、更に VNC サーバも自動起動します。)

[Desktop Entry]
Encoding=UTF-8
Type=Application
Name=X11VNC
Comment=X11VNC
Exec=x11vnc -usepw -forever
StartupNortify=false
Terminal=false
Hidden=false

注意:

VNC サーバのパスワードと x11vnc.desktop ファイルは、X サーバを起動するユーザに対して設定する必要があります。

使用方法:

自動起動の設定を行っている場合は、デフォルトの X サーバ(通常、ディスプレイ番号0番)が起動している状態で、ポート 5900 に VNC クライアントで接続します。

接続時のパスワードは、先で保存したパスワードになります。

クライアント側には、Raspberry Pi 本体のデスクトップが表示されます。(デスクトップのサイズはもちろん本体のデスクトップのサイズとなります。)

なお、x11vnc のデスクトップのサイズを変更するには、本体のデスクトップのサイズごと変更する必要があります。(/boot/config.txt の framebuffer_width, framebuffer_height で指定することが可能です。)

デフォルトのXサーバは GLX 対応(ただしソフトウェアレンダラ)なので、別マシンの OpenGL アプリケーションをリモート表示することも可能です。

参考:

x11vnc の X サーバ(デフォルトの X サーバ)の xdpyinfo 出力結果です。(この例では、1280×800 サイズ)

$ xdpyinfo
name of display:    :0.0
version number:    11.0
vendor string:    The X.Org Foundation
vendor release number:    11204000
X.Org version: 1.12.4
maximum request size:  16777212 bytes
motion buffer size:  256
bitmap unit, bit order, padding:    32, LSBFirst, 32
image byte order:    LSBFirst
number of supported pixmap formats:    7
supported pixmap formats:
    depth 1, bits_per_pixel 1, scanline_pad 32
    depth 4, bits_per_pixel 8, scanline_pad 32
    depth 8, bits_per_pixel 8, scanline_pad 32
    depth 15, bits_per_pixel 16, scanline_pad 32
    depth 16, bits_per_pixel 16, scanline_pad 32
    depth 24, bits_per_pixel 32, scanline_pad 32
    depth 32, bits_per_pixel 32, scanline_pad 32
keycode range:    minimum 8, maximum 255
focus:  window 0x2200005, revert to Parent
number of extensions:    27
    BIG-REQUESTS
    Composite
    DAMAGE
    DOUBLE-BUFFER
    DPMS
    DRI2
    GLX
    Generic Event Extension
    MIT-SCREEN-SAVER
    MIT-SHM
    RANDR
    RECORD
    RENDER
    SECURITY
    SGI-GLX
    SHAPE
    SYNC
    X-Resource
    XC-MISC
    XFIXES
    XFree86-DGA
    XFree86-VidModeExtension
    XINERAMA
    XInputExtension
    XKEYBOARD
    XTEST
    XVideo
default screen number:    0
number of screens:    1

screen #0:
  dimensions:    1280x800 pixels (339x212 millimeters)
  resolution:    96x96 dots per inch
  depths (7):    16, 1, 4, 8, 15, 24, 32
  root window id:    0xe2
  depth of root window:    16 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x20
  default number of colormap cells:    64
  preallocated pixels:    black 0, white 65535
  options:    backing-store NO, save-unders NO
  largest cursor:    1280x800
  current input event mask:    0x7a003c
    ButtonPressMask          ButtonReleaseMask        EnterWindowMask          
    LeaveWindowMask          StructureNotifyMask      SubstructureNotifyMask   
    SubstructureRedirectMask FocusChangeMask          PropertyChangeMask       
  number of visuals:    33
  default visual id:  0x21
  visual:
    visual id:    0x21
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    8 bits
  visual:
    visual id:    0xc2
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xc3
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xc4
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xc5
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xc6
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xc7
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xc8
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xc9
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xca
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xcb
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xcc
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xcd
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xce
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xcf
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xd0
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xd1
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xd2
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xd3
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xd4
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xd5
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xd6
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xd7
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xd8
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xd9
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xda
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xdb
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xdc
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xdd
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xde
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xdf
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0xe0
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    6 bits
  visual:
    visual id:    0x41
    class:    TrueColor
    depth:    32 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits