A fix for the XCopyArea symbol error that you reported in 2.5 alpha has 
been checked into git master.  2.5 beta should land sometime this month.


On 9/3/15 5:33 PM, Michael Mirsky wrote:
> I'm very sorry for not including the version. If I had, I might have realized 
> I wasn't building with version I thought I was.
>
> I found I was building with VirtualGL-2.4.80.x86_64 (not certain where I 
> originally found that tar). The official binary I was testing is 
> VirtualGL-2.4.1.x86_64.rpm. I picked up the correct source for 
> VirtualGL-2.4.1.x86_64 and compiled that. With the new source, I do not 
> receive the '-c proxy' error any more. So egg on my face...
>
> To answer your question, yes. Previously, when I was building the incorrect 
> version, '-c proxy' failed on Cygwin but not with TurboVNC.
>
> Even now with 2.4.1, Cygwin '-c proxy' still performs better than '-c jpeg' 
> or '-c rgb'. With TurboVNC, I cannot tell the difference between any of the 
> compression types -- they all seem very fluid.
>
> Perhaps, I've setup something incorrectly with Cygwin\X. I will 
> re-investigate that, and re-read the documentation.
>
> Once again, sorry for my inaccuracy & false alarm.
>
> -----Original Message-----
> From: DRC [mailto:dcomman...@users.sourceforge.net]
> Sent: Thursday, September 03, 2015 3:58 PM
> To: virtualgl-users@lists.sourceforge.net
> Subject: Re: [VirtualGL-Users] ERROR: in FBX -- XCopyArea symbol not loaded
>
> Which version of VirtualGL?  That is literally the most important detail to 
> include in any bug report.
>
> Also, if you're observing that '-c proxy' performs better than the default 
> '-c jpeg', then something is terribly wrong.  "Proxy mode" is intended for X 
> proxies, e.g. TurboVNC.  It sends the images uncompressed through the X11 
> protocol, which means that, even on gigabit, the most you'll see is 30 
> Megapixels/sec (JPEG can easily achieve twice that on a
> 100 Mbit network.)
>
> Also, just to clarify, '-c proxy' fails only with Cygwin but works with 
> TurboVNC?  Definitely something amiss there as well.  You're going to need to 
> provide a lot more details before I can even begin to figure out what's going 
> on.
>
>
> On 9/3/15 2:28 PM, Michael Mirsky wrote:
>> Hello,
>>
>> I’m new to VirtualGL and I’ve been testing it with my Qt5 app. For the
>> most part, it works flawlessly! However, I have run into one issue.
>> Specifically, my build of VirtualGL fails with the following error if
>> I try to launch my app with the “-c proxy” compression option:
>>
>> [VGL] ERROR: in FBX—
>>
>> [VGL]         510: [FBX] ERROR: XCopyArea symbol not loaded
>>
>> Any ideas of what this error means or what I might have missed during
>> compilation? Running with “-c rgb” or the default works.
>>
>> I first tested with the “official” VirtualGL binary package, and
>> vglrun with the “-c proxy” option performs with the least lag. Thus,
>> it would be nice to combine that with the xcb interposer so that resize 
>> works.
>>
>> As some background, my VirtualGL server is running on Linux (RHEL6)
>> and my client is Windows with Cygwin\X. I’ve tested using TurboVNC and
>> that works great, but I’d prefer to get Cygwin\X to work if possible.
>
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