Hi Ola,

Ola Lundqvist a écrit , Le 25/11/2011 07:02:
> What screen resolution do you use?

* client box is 1680x1050
* on the server side x11vnc has no specific geometry option; the
resulting session is  1280x1024.

Attached is the trace from such a failed vncviewer session.

Thanks,

_g.

> On Fri, Nov 25, 2011 at 12:06:28AM +0100, Gilles Filippini wrote:
>> Hi,
>>
>> Kingsley G. Morse Jr. a écrit , Le 30/01/2009:
>>> Package: xvnc4viewer
>>> Version: 4.1.1+X4.3.0-30
>>> Severity: important
>>>
>>>
>>> Thanks for maintaining xvnc4viewer.
>>>
>>> It's handy.
>>>
>>> The main reason I'm writing is that I happened to
>>> notice that it crashes intermittently.
>>>
>>> Here's a script that elicits the crash about half
>>> the time I run it ...
>>>
>>>     ssh remote-computer-name 'x11vnc -localhost -find -bg -timeout 15 
>>> -unixpw' &
>>>     sleep 5
>>>     xvnc4viewer -via remote-computer-name localhost:0
>>>
>>> xvnc4viewer reports ...
>>>
>>>     xvnc4viewer: ../rfb/zrleDecode.h:146: void rfb::zrleDecode24A(const 
>>> rfb::Rect&, rdr::InStream*, rdr::ZlibInStream*, rdr::U32*, 
>>> rfb::CMsgHandler*): Assertion `len <= end - ptr' failed.
>>>     /home/user/bin/vnc_script: line 3: 12105 Aborted                 (core 
>>> dumped) xvnc4viewer -via remote-computer-name localhost:0
>>>
>>> I also noticed that this bug and #513531 both
>>> involve RFB, so I suppose they may be related.
>>
>> I'm experiencing this bug too, on Squeeze amd64 with
>> * x11vnc 0.9.10-1.1
>> * xvnc4viewer 4.1.1+X4.3.0-37
>>
>> There is a similar bug report at RedHat's [0].
>>
>> For me, it happens when vnc4viewer automatically switches to hextile at
>> the very beginning of the session.
>> Running with "-PreferredEncoding ZRLE" works reliably. Then changing the
>> encoding or the color depth afterward through the menu does work as well.
>>
>> Thanks,
>>
>> _g.
>>
>> [0] <https://bugzilla.redhat.com/show_bug.cgi?id=522369>
>>
> 
> 
> 

VNC Viewer Free Edition 4.1.1 for X - built Mar 10 2010 22:31:05
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.

Fri Nov 25 11:43:01 2011
 main:        Listening on port 5500


Fri Nov 25 11:43:02 2011
 CConn:       Accepted connection from 0.0.0.0::53979
 CConnection: Server supports RFB protocol version 3.8
 CConnection: Using RFB protocol version 3.8
 TXImage:     Using default colormap and visual, TrueColor, depth 24.
 CConn:       Using pixel format depth 6 (8bpp) rgb222
 CConn:       Using ZRLE encoding

Fri Nov 25 11:43:04 2011
 CConn:       Throughput 20625 kbit/s - changing to hextile encoding
 CConn:       Throughput 20625 kbit/s - changing to full colour
 CConn:       Using pixel format depth 24 (32bpp) little-endian rgb888
 CConn:       Using hextile encoding
xvnc4viewer: ../rfb/zrleDecode.h:196: void rfb::zrleDecode24A(const rfb::Rect&, rdr::InStream*, rdr::ZlibInStream*, rdr::U32*, rfb::CMsgHandler*): Assertion `len <= end - ptr' failed.

Fri Nov 25 11:43:04 2011
 main:        CleanupSignalHandler called

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