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Color degrades when maximising Citrix Desktop Session

Posted on 2008-10-15
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Hey All, We are currently running a Citrix Environment running Presentation Server 4.5 and Citrix Access Gateway 4 for the Web Interface side.
Since upgrading from Metaframe to PS 4.5 we have a problem where if a user is running a session in any resolution (with 16bit colour) and then maximises the session to full screen the color degrades to 8bit, but if they start it in full screen its fine.
I've tried all legacy Citrix cilents including Xenapp 11 with now joy.
Could this be related to the hard coded memory buffer thats set in Terminal Services? or is it something deeper than that. I really hope its not the first option because upgrading to windows 2008 to get around it isn't really an option and it should really work
Cheers
Steve
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Question by:yellowteam
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Ron9909 earned 1500 total points
ID: 22725341
It is possible that you are exceeding the graphics memory buffer for the session, as the presentation server degrades colour depth first when this limit is reached.  If you look at the farm properties (assuming you haven't customised individual server settings), ICA settings, then Display, you can choose whether to degrade colour depth or resolution first.  You could increase the max memory to 8192 if you haven't already?

Strange you don't see it when going to full screen initially.  Can I also ask if you are using multipe monitors?
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by:yellowteam
ID: 22725496
Hey Ron9909,
Thanks for that, I will check it out tomorrow, and let you know
yes we are using dual monitors in some instances and oddly enough when that start in full screen not a problem at all which is why this one has really stumped me
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by:yellowteam
ID: 22729208
Hi Ron9909
Looks like Degrade resolution first is already set, which would tell me that its not because its maxing the memory buffer.
Any other ideas why on earth this is happening?
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by:yellowteam
ID: 22733089
looks like a little tweaking to the gateway and the latest client has done the trick cheers for the help
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by:Ron9909
ID: 22733685
Hi Yellowteam,

I was just about to suggest looking at the client again, as this is a typical culprit when there are display issues like this.  Glad to hear you're sorted out now.
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