Bug Tracker item #3032303, was opened at 2010-07-20 23:53
Message generated for change (Comment added) made by cendossm
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Category: None
Group: None
>Status: Closed
Resolution: None
Priority: 5
Private: No
Submitted By: Gregory D. Weber (atomiclambda)
Assigned to: Nobody/Anonymous (nobody)
Summary: vncviewer crash with "Unknown message type 128"
Initial Comment:
Brief description
--------------------------
This happens with two TightVNC vncviewer processes on host VIEWERHOST connected
to one TigerVNC Xvnc process on host SERVERHOST:
keyboard and mouse activity in one of the viewer windows cause either it or the
other viewer window to close abruptly with the messages:
Zero size rect - ignoring
Unknown message type 128 from VNC server
ShmCleanup called
Software versions involved
----------------------------------------
VIEWERHOST runs Arch Linux with
tightvnc 1.3.10-5 ("tight" -- squeeze me -- not Tiger)
kernel 2.6.34.1-1
xorg-server 1.8.1.902-1
fluxbox window manager 1.1.1-1
SERVERHOST runs Fedora 11 with
tigervnc-server-1.0.0-2.fc11.i586
(** Note that the server is Tiger (growl, sharp teeth), not Tight (squeeze me),
VNC, and the viewer is TightVNC. The problem does not occur if the server and
viewer are both Tiger, or if they are both Tight.)
xorg-x11-server-Xorg-1.6.4-0.1.fc11.i586 (maybe irrelevant)
gnome-desktop-2.26.3-2.fc11.i586
To reproduce the error
-----------------------------------
1. On SERVERHOST, start a Tiger VNC server; the Xvnc process has these
command-line arguments:
/usr/bin/Xvnc :2 -desktop merlin.iue.edu:2 (gdweber) -auth
/home/gdweber2/.Xauthority -geometry 1024x768 -rfbwait 30000 -rfbauth
/home/gdweber2/.vnc/passwd -rfbport 5902 -fp catalogue:/etc/X11/fontpath.d -pn
(merlin.iue.edu is SERVERHOST here)
(
The SERVERHOST system administrator starts these processes; I think this is the
command he's using, and I got this information from
$ ps -C Xvnc -fl | grep gdweber
0 S gdweber 17037 1 0 80 0 - 8960 poll_s Apr08 ? 01:01:12 /usr/bin/Xvnc :2
-desktop merlin.iue.edu:2 (gdweber) -auth /home/gdweber2/.Xauthority -geometry
1024x768 -rfbwait 30000 -rfbauth /home/gdweber2/.vnc/passwd -rfbport 5902 -fp
catalogue:/etc/X11/fontpath.d -pn
)
2. On VIEWERHOST, start a TightVNC viewer:
$ vncviewer merlin.iue.edu:2
3. Repeat step 2, so we now have two vncviewer windows -- call them A and B --
on VIEWERHOST.
4. Put mouse over either window A or B (and if necessary click) to give the
window focus, so that it receives keystroke events.
5. Repeat until either window A or B closes:
a. Type some keystrokes into the focussed window. Move the mouse around in the
window and out of the window. Move it also between the two windows.
b. Give focus to the other window.
The time until the error occurs is variable, but is generally around 1 to 2
minutes, and always less than 5 minutes.
The error seems to occur especially when the mouse is moved out of window A or
B, or maybe out of one and into the other, and it seems to make no difference
whether A and B are overlapping or there is some screen space between them.
The error also occurs if vncviewers A and B are running on two different
hosts. I happened to discover it while running both on the same host,
because I'm preparing to teach a programming course online, and was testing
out procedures for using VNC so that students can share their desktops with
me.
I reported this initially as TightVNC bug
(https://sourceforge.net/tracker/index.php?func=detail&aid=3031029&group_id=14067&atid=114067),
and the TightVNC developers say it appears that the TigerVNC server is sending
a wrong cursor shape or cursor position.
----------------------------------------------------------------------
>Comment By: Pierre Ossman (cendossm)
Date: 2011-10-24 14:54
Message:
Closing because of lack of feedback.
----------------------------------------------------------------------
Comment By: Adam Tkac (atkac)
Date: 2010-09-16 17:16
Message:
May I ask you to check if other clients (like our TigerVNC's vncviewer,
GNOME's vinagre or RealVNC vncviewer) are also disconnected, please?
----------------------------------------------------------------------
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