So using Oracle Java does indeed fix the issue!

Thanks for the help.
Brady

On Wed, Aug 24, 2016 at 9:56 AM, Brady Koenig <[email protected]>
wrote:

> Thanks. I'll try.
>
> This is what I'm running: MacBook Pro (Retina, 15-inch, Late 2013)
>
> If you send me the scripts and instructions I'll give it a try.
>
> Thanks again
> Brady
>
> On Wed, Aug 24, 2016 at 9:52 AM, DRC <[email protected]>
> wrote:
>
>> Have you tried the OracleJava version?  Depending on your graphics
>> hardware, that might be the fastest version anyhow.  I don't claim that
>> these results are universal, but here's what the performance situation
>> looks like on my test machines:
>>
>> (Numbers represent average blit time across the "canonical" TurboVNC
>> session captures that we use for all of our viewer benchmarking:
>> http://www.turbovnc.org/rfbsessions.turbo.hiqual.tar.bz2)
>>
>> Late 2014 Mac Mini w/ 3 GHz i7 and Intel IRIS:
>> AppleJava (1.6.0_65):   2D sessions= 232s, 3D sessions= 46s
>> OracleJava (1.8.0_45):  2D sessions= 18s, 3D sessions= 9.4s
>>
>> 2009 Mac Mini w/ 2 GHz Core 2 Duo and nVidia GeForce 9400:
>> AppleJava (1.6.0_65):   2D sessions= 8.2s, 3D sessions= 9.7s
>> OracleJava (1.8.0_45):  2D sessions= 46s, 3D sessions= 9.3s
>>
>> 2011 Macbook Pro w/ 2.4 GHz i5 and Intel HD Graphics 3000:
>> AppleJava (1.6.0_65):   2D sessions= 5.3s, 3D sessions= 5.1s
>> OracleJava (1.8.0_45):  2D sessions= 70s, 3D sessions= 16s
>>
>> Welcome to the Hell that is Java 2D.  On older equipment, Apple Java
>> (AKA "Java for OS X") tends to be faster, because it has a
>> Quartz-accelerated implementation of Java 2D.  However, that
>> Quartz-accelerated implementation of Java 2D apparently doesn't support
>> newer graphics chips, like the Intel IRIS.  On my newer Mac Mini w/
>> IRIS, trying to use AppleJava is not only very slow (no Quartz
>> acceleration), but it produces visual anomalies like the one you're
>> describing (and the gamma doesn't appear to be correct, either.)  On
>> older machines, Oracle Java (which only uses OpenGL for Java 2D on Mac
>> platforms-- no Quartz) is somewhat slower than Apple Java but is still
>> usable.  It's worth noting that the 2D performance metrics aren't
>> necessarily realistic indicators of how the end user will perceive
>> performance.  Those benchmarks are just throwing tiles at the blitter as
>> fast as they can.  The actual update rate is still quite fast with
>> Oracle Java on older systems, so whether or not an end user could tell
>> the difference between Apple and Oracle Java on those systems is an open
>> question.
>>
>> Long and the short of it-- try Oracle Java and see if that works around
>> the issue.  Apple Java is a deprecated product, and support for it on
>> newer OS X releases is limited at best.
>>
>>
>> On 8/24/16 10:24 AM, Brady Koenig wrote:
>> >
>> > I'm using turboVNC server and client.
>> > server: turbovnc-2.0.1.x86_64.rpm
>> > client: TurboVNC-2.0.2-AppleJava
>> >
>> > I recently updated to El Capitan. Everything worked great before the
>> > upgrade.
>> > I run the turboVNC client in full screen mode on a second screen.
>> > When I switch focus back and forth from a window on the primary screen
>> > to turboVNC on the secondary screen I get a brief full screen white
>> > flash. That's driving me nuts.
>> >
>> > Has anyone else seen this? Anyone found a work around?
>> >
>> > Thanks
>> > Brady
>>
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>
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