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Paper Tape
Posts: 1
Registered: ‎03-23-2012
Location: India
Message 1 of 7 (811 Views)

On Screen Display Slowing WPF application

Hi,

 

I am using T420 for development of a WPF (.Net 4.0) based application. My Application shows substantially degraded performance whenever the "On Screen Display" service is on.

 

How can I fix this problem in my code?

OR do I request my customer to unset this utility?

 

OS version - Win 7 Pro, SP1 (64bit)

ThinkPad HotKey Features Integration Package - 3.70.0003.0

 

Thanks & Regards,

-Umesh

What's DOS?
Posts: 4
Registered: ‎04-04-2012
Location: Tolland, Connecticut
Message 2 of 7 (781 Views)

Re: On Screen Display Slowing WPF application

 

Ok, so no replies for Umesh after a couple of weeks, so can the Lenovo community tell us how we can contact Lenovo directly? This is a serious problem that someone needs to address. I will do whatever needs to be done but there needs to be corporation from both sides.

 

TIA

Bit Torrent
Posts: 1,876
Registered: ‎03-08-2012
Location: Belleville, Ontario Canada
Message 3 of 7 (779 Views)

Re: On Screen Display Slowing WPF application

He can call Lenovo tech support. It's also in India as is he. My calls go there from Canada.
T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Windows 7 Home Prem - 64bit w/8GB
Z70-80 I7 - 5500U 16GB GB - 1TB HD Window 8.1 64bit FHD 17.3 inch Display, Nvidia G840 w/2GB memory

What's DOS?
Posts: 4
Registered: ‎04-04-2012
Location: Tolland, Connecticut
Message 4 of 7 (778 Views)

Re: On Screen Display Slowing WPF application

Thanks for the quick reply but this problem goes deeper than a call to TechSupport. We need an engineer on the "inside". If you are telling us that this is where we need to start then so be it.

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Bit Torrent
Posts: 1,876
Registered: ‎03-08-2012
Location: Belleville, Ontario Canada
Message 5 of 7 (776 Views)

Re: On Screen Display Slowing WPF application

They or customer relations may be able to redirect you internally but good luck. You're not going to find software engineer on the forum. I do think this is an official forum for warranty repair/solutions. Although some of us try to help and the odd post from people from Lenovo. You can wait or start making calls and see where it leads you.

I don't work for Lenovo or have anything to do with the company. I bought one of there products and thats why I am here gettting a sense of what the platform is about and specifics I don't see elsewhere.
T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Windows 7 Home Prem - 64bit w/8GB
Z70-80 I7 - 5500U 16GB GB - 1TB HD Window 8.1 64bit FHD 17.3 inch Display, Nvidia G840 w/2GB memory

What's DOS?
Posts: 4
Registered: ‎04-04-2012
Location: Tolland, Connecticut
Message 6 of 7 (775 Views)

Re: On Screen Display Slowing WPF application

Thanks tripplec - the calls will begin soon and if I find a solution I will report back.

What's DOS?
Posts: 4
Registered: ‎04-04-2012
Location: Tolland, Connecticut
Message 7 of 7 (718 Views)

Re: On Screen Display Slowing WPF application

I finally figured this out and MS had a hotfix over a year ago. Problem was trying to isolate it down to what was happening. Thanks to ANTS - Profiler I deduced a UIAutomation problem, did a Google search and bingo

 

http://archive.msdn.microsoft.com/KB2484841

 

http://support.microsoft.com/kb/2468871

 

 

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