Brian,

I actually updated my machine to CentOS 6.5, and the version I have is:
libjpeg-turbo-1.2.1-1.el6.x86_64

Naming conventions suggest that with only the release number being updated
that the code used isn't different for libjpeg turbo.  Do you think there
is a reasonable chance that the -3 release is compiled differently enough
to make it relevant in this situation?

If you think so, I will try to update that package.  Unfortunately the box
I'm using is the box I have to use for day-to-day work (which is why it
isn't 6.7 since I'd be the first to go there).  So there'll be a natural
limit to my tolerance for updating further :)

On Tue, Oct 13, 2015 at 11:30 AM, Brian Hinz <[email protected]>
wrote:

> On CentOS 6, TigerVNC's official builds are linked against the system
> supplied version of libjpeg-turbo, not a statically built copy.  At least
> on my fully up to date CentOS 6.7 box, this corresponds to
> libjpeg-turbo-1.2.1-3.el6_5.
>
> -brian
>
> On Tue, Oct 13, 2015 at 1:20 PM, Brett Williams  wrote:
>
>> It took only a few minutes to see that updating the server did not solve
>> this issue.  I'll try applying the patch, but unfortunately am not
>> experienced building things for the mac (the mac is just a glorified window
>> into  linux machines, with which I am much more comfortable).
>>
>> So it will take some time for me to get this figured out.  The
>> buildscript doesn't look complex though and the patch is simple so I'll
>> take a stab.
>>
>> Is there any possibility that the client could be made tolerant of this
>> kind of error?  Other VNC clients do not seem to have this issue.  (that
>> said they have other issues which is why turbovnc is my #1 choice right now
>> if I can resolve this issue :)
>>
>> On Tue, Oct 13, 2015 at 10:44 AM, Brett Williams  wrote:
>>
>>> Thank you for your response.
>>>
>>> I am now running tigervnc 1.5.0 (the latest release) for the server.
>>> The production version of this deployment will have this latest version (my
>>> particular setup did not).
>>>
>>> If this issue doesn't occur after a few days of working with the
>>> application using the newer version of the tigervnc server, that should be
>>> sufficient confirmation that it fixes the issue.  If the issue reoccurs I
>>> will try your patch.
>>>
>>> This also required an update of the pixmap package on the server side.
>>>
>>> On Mon, Oct 12, 2015 at 11:49 PM, DRC wrote:
>>>
>>>> w/ attachment
>>>>
>>>>
>>>> On 10/13/15 12:22 AM, DRC wrote:
>>>>
>>>>> I very strongly suspect that this issue is on the server side, and I
>>>>> think it's probably due to an issue in libjpeg-turbo that has long
>>>>> since
>>>>> been fixed.  TigerVNC 1.3.0 is quite old, and perhaps you're using a
>>>>> binary of it that was statically linked against an older version of
>>>>> libjpeg-turbo-- if you're using the "official" TigerVNC binary for
>>>>> 1.3.0, then it was probably linked against libjpeg-turbo 1.3.0.  There
>>>>> have been several fixes to libjpeg-turbo since then that could account
>>>>> for this error.
>>>>>
>>>>> My most immediate suggestion would be to either switch to the TurboVNC
>>>>> 2.0 Server or upgrade to a newer build of TigerVNC and see if that
>>>>> eliminates the issue.  If not, then you can apply the attached patch to
>>>>> save the JPEG file that is causing the error (it should be called
>>>>> "error0.jpg".)  Hopefully I can at least verify whether the erroneous
>>>>> JPEG is exhibiting one of the known bugs in past versions of
>>>>> libjpeg-turbo or whether this is a new bug.  If none of those
>>>>> diagnostic
>>>>> techniques produces the desired result, then we may need to get more
>>>>> creative.
>>>>>
>>>>>
>>>>> On 10/9/15 8:55 AM, Brett Williams wrote:
>>>>>
>>>>>> There is one application that I use which frequently will crash
>>>>>> TurboVNC
>>>>>> viewer.
>>>>>>
>>>>>> I've attached an image of the error message.  Because this error
>>>>>> message
>>>>>> disconnects the viewer, and a subsequent reconnect immediately has the
>>>>>> same problem, my only workaround is to use a different VNC viewer to
>>>>>> connect and change the state a bit.  Then I can reconnect using
>>>>>> TurboVNC.
>>>>>>
>>>>>> However, the problem will reoccur a few times a day.
>>>>>>
>>>>>> I am unsure how to create a useful test case for this situation.  Is
>>>>>> there some kind of debug informational dump that I could do?  The
>>>>>> application in question is commercial software.
>>>>>>
>>>>>> Client:
>>>>>> Mac OS/X 10.9.5
>>>>>> TurboVNC Viewer 2.0 (20150714) (Java Hotspot 1.6.0_65 x86_64)
>>>>>>
>>>>>> Server:
>>>>>> CentOS 6.4
>>>>>> tigerVNC 1.3.0-16
>>>>>>
>>>>>
>>>>
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>>>> [email protected]
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>>>>
>>>>
>>>
>>
>>
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