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Video mode restricted by administrator

Posted on 2014-04-17
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Last Modified: 2014-04-30
Let me start by saying that this is xenapp 6.5 on server 2008r2, so the former registry settings for 4.5 or server 2003 do not apply here- this should all be dynamic.

I have a user that is using two 24" widescreen monitors and connecting internally to my published desktop.  the message he is receiving is the following mode was not available - 3360x1050 x16bpp. the video has bee set to the following mode: 3035x948x 16bpp,  i get a similar message if i try to go full screen with my two ultra-wide monitors (2560x1080 each)

I have made an attempt to adjust the memory limits under the Citrix farm policy within the app center console.  Display memory limit has been bumped from 32MB to 131072kb,  but it has made no difference.  I know my policies are working as i have also dropped the color depth to 16 bit, and that is reflected in the message.  Display mode degrade preference has also been enabled and set to degrade color depth first.

anywhere else to look?
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Question by:GreshAssoc
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Expert Comment

by:Justin Yeung
ID: 40008927
3360x1050 x16bpp = 53mb
2560x1080 x16bpp = 42mb
3035x948   x16bpp = 44mb

you will need to change your limit to more that 53 mb, other wise it will not allowed and failed.
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Expert Comment

by:Coralon
ID: 40009002
Is the desktop published seamlessly? Or did you specify a resolution?  If you publish it at a specified resolution, it will override the client.  

Another possibility is what is his DPI setting?  (I have an open case with Citrix on this subject).  The ICA clients negotiate everything at 96DPI, regardless of the client's DPI.  What happens is that the ratio of the server DPI (96) do the client DPI is applied to the resolution.  So, if you have an 80% ratio, your resolution will be at 80% of the client's maximum.  

I ran the same setup myself (2 24" monitors @ 1920x1200 each) and I was able to run full screen without any issue.

Coralon
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by:GreshAssoc
ID: 40010286
memory limit is set at 131072kb >128MB, so it should be well within the range of those monitors.

The desktop is published seamlessly.  I have multiple different user setups, some with 2 widescreens and some with 2 or 3 4:3 monitors.  I will check the local clients DPI settings.  This is a user that we have inherited from the purchase of another company, and they are still using their own Citrix farm as well in which his works correctly,
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by:GreshAssoc
ID: 40018414
still no luck after changing the local video card to 16bit.
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by:Coralon
ID: 40019170
What did you find on the client DPI?

Can you connect to a different Citrix farm with that client and see if it works?  If you don't have one, I'd suggest you build another server and *don't* join it to your domain.. just get it up enough to connect to it, and then try to connect directly to it with that Citrix client.

That will at least tell us if it is a client problem, or if it is a server problem.

Coralon
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by:GreshAssoc
ID: 40019986
The client DPI was set locally to 24bit.  dropping it down to 16bit did not make a difference.  The client is able to connect to their former employers farm in full native resolution, but connecting to my farm throws the error.  I get the same result if it try to connect to my farm in full screen mode as well.  I will try building a test server.
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Expert Comment

by:Coralon
ID: 40021714
Not color depth.. DPI - Dots Per Inch.  The standard DPI forever has been 96DPI.  However, with the newer higher resolution displays, you start to see 120DPI, or even 144DPI.  In Windows, when you adjust the setting to "make items look bigger" or "make text look larger" etc. (depends on your version of the OS, you are increasing the DPI.

Coralon
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GreshAssoc earned 0 total points
ID: 40023176
wow, that one went right over my head.  issue is already fixed, but did check and they were set to 100% locally and this setting is locked out on the server.  The problem turned out to be a corrupted GPO on the servers. Ran through Citrix article CTX134961 and deleted all gpo's in each location and after a reboot of my two physical servers they worked correctly, then ran through my master image for my VM's and they started working as well.
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Author Closing Comment

by:GreshAssoc
ID: 40031563
solved myself
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