Xenial: vnc4server doesn't start kde

[Inaki Lopez]

In a fresh install of Kubuntu Xenial 16.04.01, just installing vnc4server and starting a new instance with vnc4server :2 the kde is not started, I just can see the generic X environment with a copy of the vncconfig program.

The log for this session is:

<code>

Xvnc Free Edition 4.1.1 - built Feb 25 2015 23:02:21
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
Underlying X server release 40300000, The XFree86 Project, Inc

Mon Oct 24 23:17:43 2016
 vncext: VNC extension running!
 vncext: Listening for VNC connections on port 5902
 vncext: created VNC server for screen 0
error opening security policy file /etc/X11/xserver/SecurityPolicy
Could not init font path element /usr/X11R6/lib/X11/fonts/Type1/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/Speedo/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/misc/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/75dpi/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/100dpi/, removing from list!
Could not init font path element /usr/share/fonts/X11/75dpi/, removing from list!
Could not init font path element /usr/share/fonts/X11/100dpi/, removing from list!
QCoreApplication::arguments: Please instantiate the QApplication object first
x-terminal-emulator: Unknown option 'ls'.
x-terminal-emulator: Use --help to get a list of available command line options.
QXcbConnection: Failed to initialize XRandr
Qt: XKEYBOARD extension not present on the X server.
QXcbConnection: Failed to initialize XRandr
Qt: XKEYBOARD extension not present on the X server.
QXcbConnection: Failed to initialize XRandr
Qt: XKEYBOARD extension not present on the X server.
Setting the name of 0x22e81f0 to "org.kde.ActivityManager.ActivityTemplates"
Setting the name of 0x22f32a0 to "org.kde.ActivityManager.RunApplication"
Setting the name of 0x22fbec0 to "org.kde.ActivityManager.Resources.Scoring"
Creating directory: "/home/radikal/.local/share/kactivitymanagerd/resources/"
KActivities: Database connection: "kactivities_db_resources_139722819225792_readwrite"
    query_only: QVariant(qlonglong, 0)
    journal_mode: QVariant(QString, "wal")
    wal_autocheckpoint: QVariant(qlonglong, 100)
    synchronous: QVariant(qlonglong, 1)
org.kde.kwindowsystem.keyserver.x11: Your keyboard setup doesn't provide a key to use for meta. See 'xmodmap -pm' or 'xkbcomp $DISPLAY'
QDBusConnection: name 'org.kde.kglobalaccel' had owner '' but we thought it was ':1.3'
QXcbConnection: XCB error: 16 (BadLength), sequence: 544, resource id: 4194315, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 545, resource id: 4194315, major code: 72 (PutImage), minor code: 0
kwin_core: Compositing is not possible
QXcbConnection: XCB error: 16 (BadLength), sequence: 546, resource id: 4194315, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 547, resource id: 4194315, major code: 72 (PutImage), minor code: 0
detected kglobalaccel restarting, re-registering all shortcut keys
Service started, version: 6.2.0
QXcbConnection: XCB error: 16 (BadLength), sequence: 557, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 558, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 559, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 560, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 561, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 562, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 563, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 564, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 565, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 566, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 567, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 568, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 569, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 570, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 571, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 572, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 573, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 574, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 575, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 576, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 577, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 578, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 579, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 580, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 581, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 582, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 583, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 584, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 585, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 586, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 587, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 588, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 589, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 590, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 591, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 592, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 593, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 594, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 595, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 596, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 597, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 598, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 599, resource id: 2097164, major code: 72 (PutImage), minor code: 0
QXcbConnection: XCB error: 16 (BadLength), sequence: 600, resource id: 2097164, major code: 72 (PutImage), minor code: 0
XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":2"
      after 175 requests (175 known processed) with 0 events remaining.
The X11 connection broke (error 1). Did the X11 server die?
Closing SQL connection: "kactivities_db_resources_139722819225792_readwrite"
The X11 connection broke (error 1). Did the X11 server die?
</code>

if I uncomment the two lines in home/.vnc/xtartup:

# Uncomment the following two lines for normal desktop:
unset SESSION_MANAGER
exec /etc/X11/xinit/xinitrc

the result is different, now I just can see the X windows standard environment, without the vncconfig opened, but, the kde does not start.

This is the log for that session:

<code>
Xvnc Free Edition 4.1.1 - built Feb 25 2015 23:02:21
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
Underlying X server release 40300000, The XFree86 Project, Inc

Mon Oct 24 23:26:29 2016
 vncext: VNC extension running!
 vncext: Listening for VNC connections on port 5902
 vncext: created VNC server for screen 0
error opening security policy file /etc/X11/xserver/SecurityPolicy
Could not init font path element /usr/X11R6/lib/X11/fonts/Type1/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/Speedo/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/misc/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/75dpi/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/100dpi/, removing from list!
Could not init font path element /usr/share/fonts/X11/75dpi/, removing from list!
Could not init font path element /usr/share/fonts/X11/100dpi/, removing from list!

Mon Oct 24 23:26:43 2016
 Connections: accepted: 0.0.0.0::49632
 SConnection: Client needs protocol version 3.8
 SConnection: Client requests security type VncAuth(2)
 VNCSConnST: Server default pixel format depth 16 (16bpp) little-endian rgb565
 VNCSConnST: Client pixel format depth 16 (16bpp) little-endian rgb565
 VNCSConnST: Client pixel format depth 16 (16bpp) little-endian rgb565

Mon Oct 24 23:26:46 2016
 Connections: closed: 0.0.0.0::49632 (Clean disconnection)
 SMsgWriter: framebuffer updates 132
 SMsgWriter: ZRLE rects 264, bytes 7728
 SMsgWriter: raw bytes equivalent 1719364, compression ratio 222.484990
</code>

I have installed a Ubuntu server, then I have installed KDE desktop and the vnc4server do the same thing.