I ran an automatic update for AMD VISION Control Center and begin getting a message that KDBSYCH failed to start

Read this thread and try what is suggested, let us know if it solves your issue or not:

http://forums.amd.com/game/messageview.cfm?catid=449&threadid=162032&highlight_key=y&keyword1=kdbsync

The opinions expressed above do not represent those of Advanced Micro Devices or any of their affiliates.
Requiescat In Pace AMD Processor Forums | Member since: 1/19/2009 | Post count: 4142
Please don't PM me with questions, instead create a thread so that everyone can assist and benefit from the knowledge provided. Thanks in advance!

There are two ways you can resolve this issue.

 The first method is to completely reinstall the drivers again.

 You may use this guide. (This is for Windows 7 and Vista)

 1. Download the WICU.

http://www.softpedia.com/get/Security/Secure-cleaning/Windows-Installer-CleanUp-Utility.shtml

 2. Uninstall everything related to ATI/AMD and reboot through programs and features in the Control Panel (programs and features).

Use Driver Fusion (freeware) to remove any remnants of AMD (check the "AMD Display" box) (http://treexy.com/products/driver-fusion).

 3. Launch WICU and delete anything related to ATI/AMD/CCC.

 4. Delete all ATI/AMD folders in "C:\Program Files" and "C:\Program Files (x86)".

 5. Boot into safemode and navigate to the "C:\Windows\Assembly" folder and delete any assemblies which have the public token key "90ba9c70f846762e". It is possible that you won't find any, but check it.

 6. Reboot.

 7. Install the Catalyst package again. It should work now without the error message appearing.

 The second method is to turn off the service.

 Here is a picture to turn it off in “msconfig” The highlighted one is the one you need to turn off.

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Let me know if my methods resolve this issue or not.

AMD Customer Care
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Thanks George!  I'll sticky this one for a bit since we seem to get a lot of threads lately concerning it.

The opinions expressed above do not represent those of Advanced Micro Devices or any of their affiliates.
Requiescat In Pace AMD Processor Forums | Member since: 1/19/2009 | Post count: 4142
Please don't PM me with questions, instead create a thread so that everyone can assist and benefit from the knowledge provided. Thanks in advance!

Separately, I have recently performed the exact same proceedures in an attempt to resolve this issue. 

• DL'ed the legacy software ( 12-6-legacy_vista_win7_64_dd_ccc_whql ) for my Radeon 4800
• Installed over previous versions (an update in version for me but did NOT resolve the start-up error message).  So .....
• Uninstalled all ATI software
• Deleted all remaining ATI/AMD directories
• Rebooted ...... no error meassage (of course)
• Re-installed the legacy software package
• Rebooted ......... error meassage returned

The computer seems to be operating fine.  I'm not a gamer, so I'm not sure if kbsync is utilized in a non-game environment.  My sense from reading the comments that anyone with this or similar series cards at least in Win7 will have this error.  So, a few basic question to which I/we need answers:

• What does kbsync do?
• What HW does it interface with?  Yes, I assume it is a keyboard, but is it a particular brand or type?
• Under what circumstances is it necessary to be operable?
• What other system/hardware issues will pop up if it IS necessary but has not been initiated at startup?

I can put up with the error message if I know there is no downside not having kbsync initiated at startup.  Could not find anything in the Knowledgebase that can answer these questions.

Dennis

The only thing I found that quit working and seems to be tied to KDBSYNC failing is DFX sound enhancement.    It worked before the failures and did not work after.

1. Uninstall AMD Drivers restart

2. Clean all AMD Drivers by Driver Fusion and restart

3. Install AMD Drivers. Restart. Done. No Kdbsync error.

4. Come on AMD, fix this crap 12.6 legacy drivers to work with modern ui apps. Nvidia 8500gt drivers works like a charm. Nvidia can support this old card but you have problem with drivers for still good card like HD4890. I won't buy next card with so short support.   

.

Did that before I came here and searched the board.   Then I joined the board so I could ask for other suggestions.   Thanks anyway.

Dennis

Did you use Driver Fusion? For me it's working.

Honestly don't know what that is.   I have an older card (4xxx series) so I dl'ed legacy support drivers, uninstalling old ones,  deleteing all folders and leave behinds.  Then rebooted to install new drivers.

Dennis

http://forums.amd.com/game/messageview.cfm?catid=444&threadid=162444&enterthread=y

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Driver Fusion is the new version of Driver Sweeper. Software that clean drivers from system(deleting AMD folders you don't remove all drivers from system)  . In Driver Fusion you must choose AMD, and click button "Clean". If everything dissapear then you can install legacy drivers again.  

AH, this good

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