2D fail about KVM

[Vic Chen]

Hi
I have some questions about KVM, I know FAQ said Don't use a KVM switch can narrow down this issue.
Because I need to testing 30 machines every project, use KVM is better to test, I want to know

1. Why some project can use KVM never 2D fail, and some project will happened 2D issue almost 100% when use KVM.
2. What may related on this different ?

use KVM's issue here
1.No operations reported in time out period
2.frame could not be displayed and was skipped
3.as picture


P.S.
1. Burnin(1024) the same issue.
2. HDMI/VGA KVM the same issue.
thanks a lot!

[David (PassMark)]

Your screen shot was too low a resolution to see anything.

As a general comment, I don't think it really makes sense to do video card testing without a monitor connected. Some errors such as video corruption will go unnoticed if you can't inspect the display output.

We haven't done a deep investigation as to why a KVM switch doesn't always provoke an error. Likely it is timing and related to the design of the card and maybe the output in use (DVI, Display port, etc..).

[Vic Chen]

hi,
this screen's error is :
Software exception encountered.
This problem is most often caused by Burnin Test
exercising a system component that failed.

this issue happened rate is lower.
use KVM 10% / don't use KVM 3%


and I have another question
1. we bought burnin 8.1 (build 1003 or older)and have a key
Can we download 8.1 (build 1024) and use the same key to use?
2. If yes, we can use this key until 8.1 update to 8.X or 9 ?

thank you so much.

[David (PassMark)]

Yes, you should upgrade to the latest patch release. The key for V8.x will work in all V8.x releases.
All upgrades are free for 6 months after a purchase. We should have V9 available as a beta release very early in the new year..

The 3% failure rate might be real hardware failures. Is hard to know without further investigation.
If you are getting a crash (and not just an error message) when using a KVM, then this is a bit unusual. You would need to investigate the crash dump to see if it crashed in DirectX or Video card device driver code or in the BIT application itself.