[Bug 1297345] Re: ica crash with : caught signal: 11 on italc master connect

Thu Apr 16 16:49:24 UTC 2015

This bug was fixed in the package italc - 1:2.0.1-4ubuntu0.14.10.1

---------------
italc (1:2.0.1-4ubuntu0.14.10.1) utopic; urgency=medium

  * debian/patches/git_allocate-rfbProtocolExtension-statically.patch:
    Import upstream patch to fix ica crashing when a client connects.
    (LP: #1297345)
 -- Ryan Tandy <rtandy at sd63.bc.ca>   Wed, 25 Feb 2015 12:22:56 -0800

** Changed in: italc (Ubuntu Utopic)
       Status: Fix Committed => Fix Released

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Title:
  ica crash with : caught signal: 11 on italc master connect

Status in italc package in Ubuntu:
  Fix Released
Status in italc source package in Trusty:
  Fix Released
Status in italc source package in Utopic:
  Fix Released

Bug description:
  SRU justification:

  [Impact]

   * iTALC is not meaningfully usable in trusty or utopic, because the
  client service crashes as soon as a master connects, which prevents
  the master interface from being used.

  [Test Case]

   * Install italc-master and italc-client, answer "yes" to the
  questions about whether to set up groups. Add yourself to the italc-
  student and italc-teacher groups, and log out and in again so the
  memberships take effect.

   * In one terminal, run: ica

   * In another terminal, run: italc

  Expected results: the master connects to the local client service

  Actual results: the client service crashes when the master connects,
  preventing it from starting.

  [Regression Potential]

   * The proposed fix imports a tiny patch written by upstream and
  included in iTALC 2.0.2.

   * The package is unusable at the moment, a regression could hardly
  make things worse!

  [Other Info]

   * Packages for testing are in ppa:rtandy/lp1297345

  Original description:

  When trying to start italc (master) application after launching ica
  (client), ica crash with signal: 11.

  Here the command-line output of ica :

  mar. mars 25 15:56:37 2014: [INFO] Startup for user "admin" with arguments ("ica")
  mar. mars 25 15:56:37 2014: [INFO] Ipc::Master: listening at port 37796
  mar. mars 25 15:56:37 2014: [INFO] Starting slave "SystemTrayIcon" at port 37796
  mar. mars 25 15:56:37 2014: [INFO] Exec
  25/03/2014 15:56:37 passing arg to libvncserver: -rfbport
  25/03/2014 15:56:37 passing arg to libvncserver: 11100
  25/03/2014 15:56:37 x11vnc version: 0.9.13 lastmod: 2010-12-27  pid: 13384
  25/03/2014 15:56:37 Using X display :0
  25/03/2014 15:56:37 rootwin: 0x9d reswin: 0x3600001 dpy: 0x4400e750
  25/03/2014 15:56:37
  25/03/2014 15:56:37 ------------------ USEFUL INFORMATION ------------------
  25/03/2014 15:56:37 X DAMAGE available on display, using it for polling hints.
  25/03/2014 15:56:37   To disable this behavior use: '-noxdamage'
  25/03/2014 15:56:37
  25/03/2014 15:56:37   Most compositing window managers like 'compiz' or 'beryl'
  25/03/2014 15:56:37   cause X DAMAGE to fail, and so you may not see any screen
  25/03/2014 15:56:37   updates via VNC.  Either disable 'compiz' (recommended) or
  25/03/2014 15:56:37   supply the x11vnc '-noxdamage' command line option.
  25/03/2014 15:56:37
  25/03/2014 15:56:37 Wireframing: -wireframe mode is in effect for window moves.
  25/03/2014 15:56:37   If this yields undesired behavior (poor response, painting
  25/03/2014 15:56:37   errors, etc) it may be disabled:
  25/03/2014 15:56:37    - use '-nowf' to disable wireframing completely.
  25/03/2014 15:56:37    - use '-nowcr' to disable the Copy Rectangle after the
  25/03/2014 15:56:37      moved window is released in the new position.
  25/03/2014 15:56:37   Also see the -help entry for tuning parameters.
  25/03/2014 15:56:37   You can press 3 Alt_L's (Left "Alt" key) in a row to
  25/03/2014 15:56:37   repaint the screen, also see the -fixscreen option for
  25/03/2014 15:56:37   periodic repaints.
  25/03/2014 15:56:37
  25/03/2014 15:56:37 XFIXES available on display, resetting cursor mode
  25/03/2014 15:56:37   to: '-cursor most'.
  25/03/2014 15:56:37   to disable this behavior use: '-cursor arrow'
  25/03/2014 15:56:37   or '-noxfixes'.
  25/03/2014 15:56:37 using XFIXES for cursor drawing.
  25/03/2014 15:56:37 GrabServer control via XTEST.
  25/03/2014 15:56:37
  25/03/2014 15:56:37 Scroll Detection: -scrollcopyrect mode is in effect to
  25/03/2014 15:56:37   use RECORD extension to try to detect scrolling windows
  25/03/2014 15:56:37   (induced by either user keystroke or mouse input).
  25/03/2014 15:56:37   If this yields undesired behavior (poor response, painting
  25/03/2014 15:56:37   errors, etc) it may be disabled via: '-noscr'
  25/03/2014 15:56:37   Also see the -help entry for tuning parameters.
  25/03/2014 15:56:37   You can press 3 Alt_L's (Left "Alt" key) in a row to
  25/03/2014 15:56:37   repaint the screen, also see the -fixscreen option for
  25/03/2014 15:56:37   periodic repaints.
  25/03/2014 15:56:37 X FBPM extension not supported.
  25/03/2014 15:56:37 X display is capable of DPMS.
  25/03/2014 15:56:37 --------------------------------------------------------
  25/03/2014 15:56:37
  25/03/2014 15:56:37 Default visual ID: 0x20
  25/03/2014 15:56:37 Read initial data from X display into framebuffer.
  25/03/2014 15:56:37 initialize_screen: fb_depth/fb_bpp/fb_Bpl 24/32/7680
  25/03/2014 15:56:37
  25/03/2014 15:56:37 X display :0 is 32bpp depth=24 true color
  25/03/2014 15:56:37
  25/03/2014 15:56:37 Listening for VNC connections on TCP port 11100
  25/03/2014 15:56:37 Listening also on IPv6 port 11100 (socket 21)
  25/03/2014 15:56:37 Xinerama: Library libXinerama is not available to determine
  25/03/2014 15:56:37 Xinerama: the head geometries, consider using -blackout
  25/03/2014 15:56:37 Xinerama: if the screen is non-rectangular.
  25/03/2014 15:56:37 fb read rate: 1387 MB/sec
  25/03/2014 15:56:37 fast read: reset -wait  ms to: 10
  25/03/2014 15:56:37 fast read: reset -defer ms to: 10
  25/03/2014 15:56:37 The X server says there are 16 mouse buttons.
  25/03/2014 15:56:37 screen setup finished.
  25/03/2014 15:56:37

  The VNC desktop is:      ba024-xx:5200
  25/03/2014 15:56:37 possible aliases:  ba024-xx:11100, ba024-xx::11100
  PORT=11100

  ******************************************************************************
  Have you tried the x11vnc '-ncache' VNC client-side pixel caching feature yet?

  The scheme stores pixel data offscreen on the VNC viewer side for faster
  retrieval.  It should work with any VNC viewer.  Try it by running:

      x11vnc -ncache 10 ...

  One can also add -ncache_cr for smooth 'copyrect' window motion.
  More info: http://www.karlrunge.com/x11vnc/faq.html#faq-client-caching

  25/03/2014 15:57:34 Got connection from client 127.0.0.1
  25/03/2014 15:57:34   other clients:
  caught signal: 11
  25/03/2014 15:57:34 deleted 60 tile_row polling images.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: italc-client 1:2.0.1-4
  ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
  Uname: Linux 3.13.0-19-generic x86_64
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Mar 25 15:59:53 2014
  InstallationDate: Installed on 2014-03-24 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140323)
  SourcePackage: italc
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.xdg.iTALC: [deleted]

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